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authorAntonio Vazquez <blendergit@gmail.com>2021-08-06 16:18:32 +0300
committerAntonio Vazquez <blendergit@gmail.com>2021-08-06 16:29:54 +0300
commit3fbe6f513d11563339e16d501708fc361d265f3b (patch)
tree46bcd03e3f2199e96cd3950c9730d981ba45d570 /source/blender/io
parent9cff9f9f5df034ca27848875c25471dd952c34c4 (diff)
Move NanoSVG lib to extern
The library has some modifications and it has been included in a diff. Reviewed By: campbellbarton Differential Revision: https://developer.blender.org/D12142 (Some minor changes done in the patch)
Diffstat (limited to 'source/blender/io')
-rw-r--r--source/blender/io/gpencil/CMakeLists.txt4
-rw-r--r--source/blender/io/gpencil/intern/gpencil_io_import_svg.cc2
-rw-r--r--source/blender/io/gpencil/nanosvg/nanosvg.h3327
3 files changed, 2 insertions, 3331 deletions
diff --git a/source/blender/io/gpencil/CMakeLists.txt b/source/blender/io/gpencil/CMakeLists.txt
index fec95be6aa8..4af8b506bd5 100644
--- a/source/blender/io/gpencil/CMakeLists.txt
+++ b/source/blender/io/gpencil/CMakeLists.txt
@@ -33,6 +33,7 @@ set(INC
../../../../intern/clog
../../../../intern/guardedalloc
../../../../intern/utfconv
+ ../../../../extern/nanosvg
)
set(INC_SYS
@@ -44,9 +45,6 @@ set(SRC
intern/gpencil_io_import_base.cc
intern/gpencil_io_import_svg.cc
- # This line must be removed if NanoSVG is moved to extern
- nanosvg/nanosvg.h
-
gpencil_io.h
intern/gpencil_io_base.hh
intern/gpencil_io_export_base.hh
diff --git a/source/blender/io/gpencil/intern/gpencil_io_import_svg.cc b/source/blender/io/gpencil/intern/gpencil_io_import_svg.cc
index db6bbc7768e..941d1137f4d 100644
--- a/source/blender/io/gpencil/intern/gpencil_io_import_svg.cc
+++ b/source/blender/io/gpencil/intern/gpencil_io_import_svg.cc
@@ -42,7 +42,7 @@
#define NANOSVG_ALL_COLOR_KEYWORDS
#define NANOSVG_IMPLEMENTATION
-#include "nanosvg/nanosvg.h"
+#include "nanosvg.h"
using blender::MutableSpan;
diff --git a/source/blender/io/gpencil/nanosvg/nanosvg.h b/source/blender/io/gpencil/nanosvg/nanosvg.h
deleted file mode 100644
index 94dad37861a..00000000000
--- a/source/blender/io/gpencil/nanosvg/nanosvg.h
+++ /dev/null
@@ -1,3327 +0,0 @@
-/*
- * Copyright (c) 2013-14 `Mikko Mononen <memon@inside.org>`
- *
- * This software is provided 'as-is', without any express or implied
- * warranty. In no event will the authors be held liable for any damages
- * arising from the use of this software.
- *
- * Permission is granted to anyone to use this software for any purpose,
- * including commercial applications, and to alter it and redistribute it
- * freely, subject to the following restrictions:
- *
- * 1. The origin of this software must not be misrepresented; you must not
- * claim that you wrote the original software. If you use this software
- * in a product, an acknowledgment in the product documentation would be
- * appreciated but is not required.
- * 2. Altered source versions must be plainly marked as such, and must not be
- * misrepresented as being the original software.
- * 3. This notice may not be removed or altered from any source distribution.
- *
- * The SVG parser is based on Anti-Grain Geometry 2.4 SVG example
- * Copyright (C) 2002-2004 Maxim Shemanarev (McSeem) (http://www.antigrain.com/)
- *
- * Arc calculation code based on canvg (https://code.google.com/p/canvg/)
- *
- * Bounding box calculation based on
- * http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
- *
- * This is a modified version for Blender used by importers.
- *
- */
-
-#ifndef NANOSVG_H
-#define NANOSVG_H
-
-#ifndef NANOSVG_CPLUSPLUS
-# ifdef __cplusplus
-extern "C" {
-# endif
-#endif
-
-// NanoSVG is a simple stupid single-header-file SVG parse. The output of the parser is a list of
-// cubic bezier shapes.
-//
-// The library suits well for anything from rendering scalable icons in your editor application to
-// prototyping a game.
-//
-// NanoSVG supports a wide range of SVG features, but something may be missing, feel free to create
-// a pull request!
-//
-// The shapes in the SVG images are transformed by the viewBox and converted to specified units.
-// That is, you should get the same looking data as your designed in your favorite app.
-//
-// NanoSVG can return the paths in few different units. For example if you want to render an image,
-// you may choose to get the paths in pixels, or if you are feeding the data into a CNC-cutter, you
-// may want to use millimeters.
-//
-// The units passed to NanoSVG should be one of: 'px', 'pt', 'pc' 'mm', 'cm', or 'in'.
-// DPI (dots-per-inch) controls how the unit conversion is done.
-//
-// If you don't know or care about the units stuff, "px" and 96 should get you going.
-
-/* Example Usage:
- // Load SVG
- NSVGimage* image;
- image = nsvgParseFromFile("test.svg", "px", 96);
- printf("size: %f x %f\n", image->width, image->height);
- // Use...
- for (NSVGshape *shape = image->shapes; shape != NULL; shape = shape->next) {
- for (NSVGpath *path = shape->paths; path != NULL; path = path->next) {
- for (int i = 0; i < path->npts-1; i += 3) {
- float* p = &path->pts[i*2];
- drawCubicBez(p[0],p[1], p[2],p[3], p[4],p[5], p[6],p[7]);
- }
- }
- }
- // Delete
- nsvgDelete(image);
-*/
-
-enum NSVGpaintType {
- NSVG_PAINT_NONE = 0,
- NSVG_PAINT_COLOR = 1,
- NSVG_PAINT_LINEAR_GRADIENT = 2,
- NSVG_PAINT_RADIAL_GRADIENT = 3
-};
-
-enum NSVGspreadType { NSVG_SPREAD_PAD = 0, NSVG_SPREAD_REFLECT = 1, NSVG_SPREAD_REPEAT = 2 };
-
-enum NSVGlineJoin { NSVG_JOIN_MITER = 0, NSVG_JOIN_ROUND = 1, NSVG_JOIN_BEVEL = 2 };
-
-enum NSVGlineCap { NSVG_CAP_BUTT = 0, NSVG_CAP_ROUND = 1, NSVG_CAP_SQUARE = 2 };
-
-enum NSVGfillRule { NSVG_FILLRULE_NONZERO = 0, NSVG_FILLRULE_EVENODD = 1 };
-
-enum NSVGflags { NSVG_FLAGS_VISIBLE = 0x01 };
-
-typedef struct NSVGgradientStop {
- unsigned int color;
- float offset;
-} NSVGgradientStop;
-
-typedef struct NSVGgradient {
- float xform[6];
- char spread;
- float fx, fy;
- int nstops;
- NSVGgradientStop stops[1];
-} NSVGgradient;
-
-typedef struct NSVGpaint {
- char type;
- union {
- unsigned int color;
- NSVGgradient *gradient;
- };
-} NSVGpaint;
-
-typedef struct NSVGpath {
- float *pts; // Cubic bezier points: x0,y0, [cpx1,cpx1,cpx2,cpy2,x1,y1], ...
- int npts; // Total number of bezier points.
- char closed; // Flag indicating if shapes should be treated as closed.
- float bounds[4]; // Tight bounding box of the shape [minx,miny,maxx,maxy].
- struct NSVGpath *next; // Pointer to next path, or NULL if last element.
-} NSVGpath;
-
-typedef struct NSVGshape {
- char id[64]; // Optional 'id' attr of the shape or its group
- /* Blender: Parent ID used for layer creation. */
- char id_parent[64];
- NSVGpaint fill; // Fill paint
- NSVGpaint stroke; // Stroke paint
- float opacity; // Opacity of the shape.
- float strokeWidth; // Stroke width (scaled).
- float strokeDashOffset; // Stroke dash offset (scaled).
- float strokeDashArray[8]; // Stroke dash array (scaled).
- char strokeDashCount; // Number of dash values in dash array.
- char strokeLineJoin; // Stroke join type.
- char strokeLineCap; // Stroke cap type.
- float miterLimit; // Miter limit
- char fillRule; // Fill rule, see NSVGfillRule.
- unsigned char flags; // Logical or of NSVG_FLAGS_* flags
- float bounds[4]; // Tight bounding box of the shape [minx,miny,maxx,maxy].
- NSVGpath *paths; // Linked list of paths in the image.
- struct NSVGshape *next; // Pointer to next shape, or NULL if last element.
-} NSVGshape;
-
-typedef struct NSVGimage {
- float width; // Width of the image.
- float height; // Height of the image.
- NSVGshape *shapes; // Linked list of shapes in the image.
-} NSVGimage;
-
-// Parses SVG file from a file, returns SVG image as paths.
-NSVGimage *nsvgParseFromFile(const char *filename, const char *units, float dpi);
-
-// Parses SVG file from a null terminated string, returns SVG image as paths.
-// Important note: changes the string.
-NSVGimage *nsvgParse(char *input, const char *units, float dpi);
-
-// Duplicates a path.
-NSVGpath *nsvgDuplicatePath(NSVGpath *p);
-
-// Deletes an image.
-void nsvgDelete(NSVGimage *image);
-
-#ifndef NANOSVG_CPLUSPLUS
-# ifdef __cplusplus
-}
-# endif
-#endif
-
-#endif // NANOSVG_H
-
-#ifdef NANOSVG_IMPLEMENTATION
-
-#include <math.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define NSVG_PI (3.14159265358979323846264338327f)
-#define NSVG_KAPPA90 \
- (0.5522847493f) // Length proportional to radius of a cubic bezier handle for 90deg arcs.
-
-#define NSVG_ALIGN_MIN 0
-#define NSVG_ALIGN_MID 1
-#define NSVG_ALIGN_MAX 2
-#define NSVG_ALIGN_NONE 0
-#define NSVG_ALIGN_MEET 1
-#define NSVG_ALIGN_SLICE 2
-
-#define NSVG_NOTUSED(v) \
- do { \
- (void)(1 ? (void)0 : ((void)(v))); \
- } while (0)
-#define NSVG_RGB(r, g, b) (((unsigned int)r) | ((unsigned int)g << 8) | ((unsigned int)b << 16))
-
-#ifdef _MSC_VER
-# pragma warning(disable : 4996) // Switch off security warnings
-# pragma warning(disable : 4100) // Switch off unreferenced formal parameter warnings
-# ifdef __cplusplus
-# define NSVG_INLINE inline
-# else
-# define NSVG_INLINE
-# endif
-#else
-# define NSVG_INLINE inline
-#endif
-
-static int nsvg__isspace(char c)
-{
- return strchr(" \t\n\v\f\r", c) != 0;
-}
-
-static int nsvg__isdigit(char c)
-{
- return c >= '0' && c <= '9';
-}
-
-static NSVG_INLINE float nsvg__minf(float a, float b)
-{
- return a < b ? a : b;
-}
-static NSVG_INLINE float nsvg__maxf(float a, float b)
-{
- return a > b ? a : b;
-}
-
-// Simple XML parser
-
-#define NSVG_XML_TAG 1
-#define NSVG_XML_CONTENT 2
-#define NSVG_XML_MAX_ATTRIBS 256
-
-static void nsvg__parseContent(char *s, void (*contentCb)(void *ud, const char *s), void *ud)
-{
- // Trim start white spaces
- while (*s && nsvg__isspace(*s))
- s++;
- if (!*s)
- return;
-
- if (contentCb)
- (*contentCb)(ud, s);
-}
-
-static void nsvg__parseElement(char *s,
- void (*startelCb)(void *ud, const char *el, const char **attr),
- void (*endelCb)(void *ud, const char *el),
- void *ud)
-{
- const char *attr[NSVG_XML_MAX_ATTRIBS];
- int nattr = 0;
- char *name;
- int start = 0;
- int end = 0;
- char quote;
-
- // Skip white space after the '<'
- while (*s && nsvg__isspace(*s))
- s++;
-
- // Check if the tag is end tag
- if (*s == '/') {
- s++;
- end = 1;
- }
- else {
- start = 1;
- }
-
- // Skip comments, data and preprocessor stuff.
- if (!*s || *s == '?' || *s == '!')
- return;
-
- // Get tag name
- name = s;
- while (*s && !nsvg__isspace(*s))
- s++;
- if (*s) {
- *s++ = '\0';
- }
-
- // Get attribs
- while (!end && *s && nattr < NSVG_XML_MAX_ATTRIBS - 3) {
- char *name = NULL;
- char *value = NULL;
-
- // Skip white space before the attrib name
- while (*s && nsvg__isspace(*s))
- s++;
- if (!*s)
- break;
- if (*s == '/') {
- end = 1;
- break;
- }
- name = s;
- // Find end of the attrib name.
- while (*s && !nsvg__isspace(*s) && *s != '=')
- s++;
- if (*s) {
- *s++ = '\0';
- }
- // Skip until the beginning of the value.
- while (*s && *s != '\"' && *s != '\'')
- s++;
- if (!*s)
- break;
- quote = *s;
- s++;
- // Store value and find the end of it.
- value = s;
- while (*s && *s != quote)
- s++;
- if (*s) {
- *s++ = '\0';
- }
-
- // Store only well formed attributes
- if (name && value) {
- attr[nattr++] = name;
- attr[nattr++] = value;
- }
- }
-
- // List terminator
- attr[nattr++] = 0;
- attr[nattr++] = 0;
-
- // Call callbacks.
- if (start && startelCb)
- (*startelCb)(ud, name, attr);
- if (end && endelCb)
- (*endelCb)(ud, name);
-}
-
-static int nsvg__parseXML(char *input,
- void (*startelCb)(void *ud, const char *el, const char **attr),
- void (*endelCb)(void *ud, const char *el),
- void (*contentCb)(void *ud, const char *s),
- void *ud)
-{
- char *s = input;
- char *mark = s;
- int state = NSVG_XML_CONTENT;
- while (*s) {
- if (*s == '<' && state == NSVG_XML_CONTENT) {
- // Start of a tag
- *s++ = '\0';
- nsvg__parseContent(mark, contentCb, ud);
- mark = s;
- state = NSVG_XML_TAG;
- }
- else if (*s == '>' && state == NSVG_XML_TAG) {
- // Start of a content or new tag.
- *s++ = '\0';
- nsvg__parseElement(mark, startelCb, endelCb, ud);
- mark = s;
- state = NSVG_XML_CONTENT;
- }
- else {
- s++;
- }
- }
-
- return 1;
-}
-
-/* Simple SVG parser. */
-
-#define NSVG_MAX_ATTR 128
-#define NSVG_MAX_BREADCRUMB 5
-
-enum NSVGgradientUnits { NSVG_USER_SPACE = 0, NSVG_OBJECT_SPACE = 1 };
-
-#define NSVG_MAX_DASHES 8
-
-enum NSVGunits {
- NSVG_UNITS_USER,
- NSVG_UNITS_PX,
- NSVG_UNITS_PT,
- NSVG_UNITS_PC,
- NSVG_UNITS_MM,
- NSVG_UNITS_CM,
- NSVG_UNITS_IN,
- NSVG_UNITS_PERCENT,
- NSVG_UNITS_EM,
- NSVG_UNITS_EX
-};
-
-typedef struct NSVGcoordinate {
- float value;
- int units;
-} NSVGcoordinate;
-
-typedef struct NSVGlinearData {
- NSVGcoordinate x1, y1, x2, y2;
-} NSVGlinearData;
-
-typedef struct NSVGradialData {
- NSVGcoordinate cx, cy, r, fx, fy;
-} NSVGradialData;
-
-typedef struct NSVGgradientData {
- char id[64];
- char ref[64];
- char type;
- union {
- NSVGlinearData linear;
- NSVGradialData radial;
- };
- char spread;
- char units;
- float xform[6];
- int nstops;
- NSVGgradientStop *stops;
- struct NSVGgradientData *next;
-} NSVGgradientData;
-
-typedef struct NSVGattrib {
- char id[64];
- float xform[6];
- unsigned int fillColor;
- unsigned int strokeColor;
- float opacity;
- float fillOpacity;
- float strokeOpacity;
- char fillGradient[64];
- char strokeGradient[64];
- float strokeWidth;
- float strokeDashOffset;
- float strokeDashArray[NSVG_MAX_DASHES];
- int strokeDashCount;
- char strokeLineJoin;
- char strokeLineCap;
- float miterLimit;
- char fillRule;
- float fontSize;
- unsigned int stopColor;
- float stopOpacity;
- float stopOffset;
- char hasFill;
- char hasStroke;
- char visible;
-} NSVGattrib;
-
-typedef struct NSVGparser {
- NSVGattrib attr[NSVG_MAX_ATTR];
- int attrHead;
- float *pts;
- int npts;
- int cpts;
- NSVGpath *plist;
- NSVGimage *image;
- NSVGgradientData *gradients;
- NSVGshape *shapesTail;
- float viewMinx, viewMiny, viewWidth, viewHeight;
- int alignX, alignY, alignType;
- float dpi;
- char pathFlag;
- char defsFlag;
- /** Blender breadcrumb for layers. */
- char breadcrumb[NSVG_MAX_BREADCRUMB][64];
- /** Blender number of elements in breadcrumb. */
- int breadcrumb_len;
-} NSVGparser;
-
-static void nsvg__xformIdentity(float *t)
-{
- t[0] = 1.0f;
- t[1] = 0.0f;
- t[2] = 0.0f;
- t[3] = 1.0f;
- t[4] = 0.0f;
- t[5] = 0.0f;
-}
-
-static void nsvg__xformSetTranslation(float *t, float tx, float ty)
-{
- t[0] = 1.0f;
- t[1] = 0.0f;
- t[2] = 0.0f;
- t[3] = 1.0f;
- t[4] = tx;
- t[5] = ty;
-}
-
-static void nsvg__xformSetScale(float *t, float sx, float sy)
-{
- t[0] = sx;
- t[1] = 0.0f;
- t[2] = 0.0f;
- t[3] = sy;
- t[4] = 0.0f;
- t[5] = 0.0f;
-}
-
-static void nsvg__xformSetSkewX(float *t, float a)
-{
- t[0] = 1.0f;
- t[1] = 0.0f;
- t[2] = tanf(a);
- t[3] = 1.0f;
- t[4] = 0.0f;
- t[5] = 0.0f;
-}
-
-static void nsvg__xformSetSkewY(float *t, float a)
-{
- t[0] = 1.0f;
- t[1] = tanf(a);
- t[2] = 0.0f;
- t[3] = 1.0f;
- t[4] = 0.0f;
- t[5] = 0.0f;
-}
-
-static void nsvg__xformSetRotation(float *t, float a)
-{
- float cs = cosf(a), sn = sinf(a);
- t[0] = cs;
- t[1] = sn;
- t[2] = -sn;
- t[3] = cs;
- t[4] = 0.0f;
- t[5] = 0.0f;
-}
-
-static void nsvg__xformMultiply(float *t, float *s)
-{
- float t0 = t[0] * s[0] + t[1] * s[2];
- float t2 = t[2] * s[0] + t[3] * s[2];
- float t4 = t[4] * s[0] + t[5] * s[2] + s[4];
- t[1] = t[0] * s[1] + t[1] * s[3];
- t[3] = t[2] * s[1] + t[3] * s[3];
- t[5] = t[4] * s[1] + t[5] * s[3] + s[5];
- t[0] = t0;
- t[2] = t2;
- t[4] = t4;
-}
-
-static void nsvg__xformInverse(float *inv, float *t)
-{
- double invdet, det = (double)t[0] * t[3] - (double)t[2] * t[1];
- if (det > -1e-6 && det < 1e-6) {
- nsvg__xformIdentity(t);
- return;
- }
- invdet = 1.0 / det;
- inv[0] = (float)(t[3] * invdet);
- inv[2] = (float)(-t[2] * invdet);
- inv[4] = (float)(((double)t[2] * t[5] - (double)t[3] * t[4]) * invdet);
- inv[1] = (float)(-t[1] * invdet);
- inv[3] = (float)(t[0] * invdet);
- inv[5] = (float)(((double)t[1] * t[4] - (double)t[0] * t[5]) * invdet);
-}
-
-static void nsvg__xformPremultiply(float *t, float *s)
-{
- float s2[6];
- memcpy(s2, s, sizeof(float) * 6);
- nsvg__xformMultiply(s2, t);
- memcpy(t, s2, sizeof(float) * 6);
-}
-
-static void nsvg__xformPoint(float *dx, float *dy, float x, float y, float *t)
-{
- *dx = x * t[0] + y * t[2] + t[4];
- *dy = x * t[1] + y * t[3] + t[5];
-}
-
-static void nsvg__xformVec(float *dx, float *dy, float x, float y, float *t)
-{
- *dx = x * t[0] + y * t[2];
- *dy = x * t[1] + y * t[3];
-}
-
-#define NSVG_EPSILON (1e-12)
-
-static int nsvg__ptInBounds(float *pt, float *bounds)
-{
- return pt[0] >= bounds[0] && pt[0] <= bounds[2] && pt[1] >= bounds[1] && pt[1] <= bounds[3];
-}
-
-static double nsvg__evalBezier(double t, double p0, double p1, double p2, double p3)
-{
- double it = 1.0 - t;
- return it * it * it * p0 + 3.0 * it * it * t * p1 + 3.0 * it * t * t * p2 + t * t * t * p3;
-}
-
-static void nsvg__curveBounds(float *bounds, float *curve)
-{
- int i, j, count;
- double roots[2], a, b, c, b2ac, t, v;
- float *v0 = &curve[0];
- float *v1 = &curve[2];
- float *v2 = &curve[4];
- float *v3 = &curve[6];
-
- // Start the bounding box by end points
- bounds[0] = nsvg__minf(v0[0], v3[0]);
- bounds[1] = nsvg__minf(v0[1], v3[1]);
- bounds[2] = nsvg__maxf(v0[0], v3[0]);
- bounds[3] = nsvg__maxf(v0[1], v3[1]);
-
- // Bezier curve fits inside the convex hull of it's control points.
- // If control points are inside the bounds, we're done.
- if (nsvg__ptInBounds(v1, bounds) && nsvg__ptInBounds(v2, bounds))
- return;
-
- // Add bezier curve inflection points in X and Y.
- for (i = 0; i < 2; i++) {
- a = -3.0 * v0[i] + 9.0 * v1[i] - 9.0 * v2[i] + 3.0 * v3[i];
- b = 6.0 * v0[i] - 12.0 * v1[i] + 6.0 * v2[i];
- c = 3.0 * v1[i] - 3.0 * v0[i];
- count = 0;
- if (fabs(a) < NSVG_EPSILON) {
- if (fabs(b) > NSVG_EPSILON) {
- t = -c / b;
- if (t > NSVG_EPSILON && t < 1.0 - NSVG_EPSILON)
- roots[count++] = t;
- }
- }
- else {
- b2ac = b * b - 4.0 * c * a;
- if (b2ac > NSVG_EPSILON) {
- t = (-b + sqrt(b2ac)) / (2.0 * a);
- if (t > NSVG_EPSILON && t < 1.0 - NSVG_EPSILON)
- roots[count++] = t;
- t = (-b - sqrt(b2ac)) / (2.0 * a);
- if (t > NSVG_EPSILON && t < 1.0 - NSVG_EPSILON)
- roots[count++] = t;
- }
- }
- for (j = 0; j < count; j++) {
- v = nsvg__evalBezier(roots[j], v0[i], v1[i], v2[i], v3[i]);
- bounds[0 + i] = nsvg__minf(bounds[0 + i], (float)v);
- bounds[2 + i] = nsvg__maxf(bounds[2 + i], (float)v);
- }
- }
-}
-
-static NSVGparser *nsvg__createParser()
-{
- NSVGparser *p;
- p = (NSVGparser *)malloc(sizeof(NSVGparser));
- if (p == NULL)
- goto error;
- memset(p, 0, sizeof(NSVGparser));
-
- p->image = (NSVGimage *)malloc(sizeof(NSVGimage));
- if (p->image == NULL)
- goto error;
- memset(p->image, 0, sizeof(NSVGimage));
-
- // Init style
- nsvg__xformIdentity(p->attr[0].xform);
- memset(p->attr[0].id, 0, sizeof p->attr[0].id);
- p->attr[0].fillColor = NSVG_RGB(0, 0, 0);
- p->attr[0].strokeColor = NSVG_RGB(0, 0, 0);
- p->attr[0].opacity = 1;
- p->attr[0].fillOpacity = 1;
- p->attr[0].strokeOpacity = 1;
- p->attr[0].stopOpacity = 1;
- p->attr[0].strokeWidth = 1;
- p->attr[0].strokeLineJoin = NSVG_JOIN_MITER;
- p->attr[0].strokeLineCap = NSVG_CAP_BUTT;
- p->attr[0].miterLimit = 4;
- p->attr[0].fillRule = NSVG_FILLRULE_NONZERO;
- p->attr[0].hasFill = 1;
- p->attr[0].visible = 1;
-
- return p;
-
-error:
- if (p) {
- if (p->image)
- free(p->image);
- free(p);
- }
- return NULL;
-}
-
-static void nsvg__deletePaths(NSVGpath *path)
-{
- while (path) {
- NSVGpath *next = path->next;
- if (path->pts != NULL)
- free(path->pts);
- free(path);
- path = next;
- }
-}
-
-static void nsvg__deletePaint(NSVGpaint *paint)
-{
- if (paint->type == NSVG_PAINT_LINEAR_GRADIENT || paint->type == NSVG_PAINT_RADIAL_GRADIENT)
- free(paint->gradient);
-}
-
-static void nsvg__deleteGradientData(NSVGgradientData *grad)
-{
- NSVGgradientData *next;
- while (grad != NULL) {
- next = grad->next;
- free(grad->stops);
- free(grad);
- grad = next;
- }
-}
-
-static void nsvg__deleteParser(NSVGparser *p)
-{
- if (p != NULL) {
- nsvg__deletePaths(p->plist);
- nsvg__deleteGradientData(p->gradients);
- nsvgDelete(p->image);
- free(p->pts);
- free(p);
- }
-}
-
-static void nsvg__resetPath(NSVGparser *p)
-{
- p->npts = 0;
-}
-
-static void nsvg__addPoint(NSVGparser *p, float x, float y)
-{
- if (p->npts + 1 > p->cpts) {
- p->cpts = p->cpts ? p->cpts * 2 : 8;
- p->pts = (float *)realloc(p->pts, p->cpts * 2 * sizeof(float));
- if (!p->pts)
- return;
- }
- p->pts[p->npts * 2 + 0] = x;
- p->pts[p->npts * 2 + 1] = y;
- p->npts++;
-}
-
-static void nsvg__moveTo(NSVGparser *p, float x, float y)
-{
- if (p->npts > 0) {
- p->pts[(p->npts - 1) * 2 + 0] = x;
- p->pts[(p->npts - 1) * 2 + 1] = y;
- }
- else {
- nsvg__addPoint(p, x, y);
- }
-}
-
-static void nsvg__lineTo(NSVGparser *p, float x, float y)
-{
- float px, py, dx, dy;
- if (p->npts > 0) {
- px = p->pts[(p->npts - 1) * 2 + 0];
- py = p->pts[(p->npts - 1) * 2 + 1];
- dx = x - px;
- dy = y - py;
- nsvg__addPoint(p, px + dx / 3.0f, py + dy / 3.0f);
- nsvg__addPoint(p, x - dx / 3.0f, y - dy / 3.0f);
- nsvg__addPoint(p, x, y);
- }
-}
-
-static void nsvg__cubicBezTo(
- NSVGparser *p, float cpx1, float cpy1, float cpx2, float cpy2, float x, float y)
-{
- if (p->npts > 0) {
- nsvg__addPoint(p, cpx1, cpy1);
- nsvg__addPoint(p, cpx2, cpy2);
- nsvg__addPoint(p, x, y);
- }
-}
-
-static NSVGattrib *nsvg__getAttr(NSVGparser *p)
-{
- return &p->attr[p->attrHead];
-}
-
-static void nsvg__pushAttr(NSVGparser *p)
-{
- if (p->attrHead < NSVG_MAX_ATTR - 1) {
- p->attrHead++;
- memcpy(&p->attr[p->attrHead], &p->attr[p->attrHead - 1], sizeof(NSVGattrib));
- }
-}
-
-static void nsvg__popAttr(NSVGparser *p)
-{
- if (p->attrHead > 0)
- p->attrHead--;
-}
-
-static float nsvg__actualOrigX(NSVGparser *p)
-{
- return p->viewMinx;
-}
-
-static float nsvg__actualOrigY(NSVGparser *p)
-{
- return p->viewMiny;
-}
-
-static float nsvg__actualWidth(NSVGparser *p)
-{
- return p->viewWidth;
-}
-
-static float nsvg__actualHeight(NSVGparser *p)
-{
- return p->viewHeight;
-}
-
-static float nsvg__actualLength(NSVGparser *p)
-{
- float w = nsvg__actualWidth(p), h = nsvg__actualHeight(p);
- return sqrtf(w * w + h * h) / sqrtf(2.0f);
-}
-
-static float nsvg__convertToPixels(NSVGparser *p, NSVGcoordinate c, float orig, float length)
-{
- NSVGattrib *attr = nsvg__getAttr(p);
- switch (c.units) {
- case NSVG_UNITS_USER:
- return c.value;
- case NSVG_UNITS_PX:
- return c.value;
- case NSVG_UNITS_PT:
- return c.value / 72.0f * p->dpi;
- case NSVG_UNITS_PC:
- return c.value / 6.0f * p->dpi;
- case NSVG_UNITS_MM:
- return c.value / 25.4f * p->dpi;
- case NSVG_UNITS_CM:
- return c.value / 2.54f * p->dpi;
- case NSVG_UNITS_IN:
- return c.value * p->dpi;
- case NSVG_UNITS_EM:
- return c.value * attr->fontSize;
- case NSVG_UNITS_EX:
- return c.value * attr->fontSize * 0.52f; // x-height of Helvetica.
- case NSVG_UNITS_PERCENT:
- return orig + c.value / 100.0f * length;
- default:
- return c.value;
- }
- return c.value;
-}
-
-static NSVGgradientData *nsvg__findGradientData(NSVGparser *p, const char *id)
-{
- NSVGgradientData *grad = p->gradients;
- if (id == NULL || *id == '\0')
- return NULL;
- while (grad != NULL) {
- if (strcmp(grad->id, id) == 0)
- return grad;
- grad = grad->next;
- }
- return NULL;
-}
-
-static NSVGgradient *nsvg__createGradient(NSVGparser *p,
- const char *id,
- const float *localBounds,
- char *paintType)
-{
- NSVGattrib *attr = nsvg__getAttr(p);
- NSVGgradientData *data = NULL;
- NSVGgradientData *ref = NULL;
- NSVGgradientStop *stops = NULL;
- NSVGgradient *grad;
- float ox, oy, sw, sh, sl;
- int nstops = 0;
- int refIter;
-
- data = nsvg__findGradientData(p, id);
- if (data == NULL)
- return NULL;
-
- // TODO: use ref to fill in all unset values too.
- ref = data;
- refIter = 0;
- while (ref != NULL) {
- NSVGgradientData *nextRef = NULL;
- if (stops == NULL && ref->stops != NULL) {
- stops = ref->stops;
- nstops = ref->nstops;
- break;
- }
- nextRef = nsvg__findGradientData(p, ref->ref);
- if (nextRef == ref)
- break; // prevent infite loops on malformed data
- ref = nextRef;
- refIter++;
- if (refIter > 32)
- break; // prevent infite loops on malformed data
- }
- if (stops == NULL)
- return NULL;
-
- grad = (NSVGgradient *)malloc(sizeof(NSVGgradient) + sizeof(NSVGgradientStop) * (nstops - 1));
- if (grad == NULL)
- return NULL;
-
- // The shape width and height.
- if (data->units == NSVG_OBJECT_SPACE) {
- ox = localBounds[0];
- oy = localBounds[1];
- sw = localBounds[2] - localBounds[0];
- sh = localBounds[3] - localBounds[1];
- }
- else {
- ox = nsvg__actualOrigX(p);
- oy = nsvg__actualOrigY(p);
- sw = nsvg__actualWidth(p);
- sh = nsvg__actualHeight(p);
- }
- sl = sqrtf(sw * sw + sh * sh) / sqrtf(2.0f);
-
- if (data->type == NSVG_PAINT_LINEAR_GRADIENT) {
- float x1, y1, x2, y2, dx, dy;
- x1 = nsvg__convertToPixels(p, data->linear.x1, ox, sw);
- y1 = nsvg__convertToPixels(p, data->linear.y1, oy, sh);
- x2 = nsvg__convertToPixels(p, data->linear.x2, ox, sw);
- y2 = nsvg__convertToPixels(p, data->linear.y2, oy, sh);
- // Calculate transform aligned to the line
- dx = x2 - x1;
- dy = y2 - y1;
- grad->xform[0] = dy;
- grad->xform[1] = -dx;
- grad->xform[2] = dx;
- grad->xform[3] = dy;
- grad->xform[4] = x1;
- grad->xform[5] = y1;
- }
- else {
- float cx, cy, fx, fy, r;
- cx = nsvg__convertToPixels(p, data->radial.cx, ox, sw);
- cy = nsvg__convertToPixels(p, data->radial.cy, oy, sh);
- fx = nsvg__convertToPixels(p, data->radial.fx, ox, sw);
- fy = nsvg__convertToPixels(p, data->radial.fy, oy, sh);
- r = nsvg__convertToPixels(p, data->radial.r, 0, sl);
- // Calculate transform aligned to the circle
- grad->xform[0] = r;
- grad->xform[1] = 0;
- grad->xform[2] = 0;
- grad->xform[3] = r;
- grad->xform[4] = cx;
- grad->xform[5] = cy;
- grad->fx = fx / r;
- grad->fy = fy / r;
- }
-
- nsvg__xformMultiply(grad->xform, data->xform);
- nsvg__xformMultiply(grad->xform, attr->xform);
-
- grad->spread = data->spread;
- memcpy(grad->stops, stops, nstops * sizeof(NSVGgradientStop));
- grad->nstops = nstops;
-
- *paintType = data->type;
-
- return grad;
-}
-
-static float nsvg__getAverageScale(float *t)
-{
- float sx = sqrtf(t[0] * t[0] + t[2] * t[2]);
- float sy = sqrtf(t[1] * t[1] + t[3] * t[3]);
- return (sx + sy) * 0.5f;
-}
-
-static void nsvg__getLocalBounds(float *bounds, NSVGshape *shape, float *xform)
-{
- NSVGpath *path;
- float curve[4 * 2], curveBounds[4];
- int i, first = 1;
- for (path = shape->paths; path != NULL; path = path->next) {
- nsvg__xformPoint(&curve[0], &curve[1], path->pts[0], path->pts[1], xform);
- for (i = 0; i < path->npts - 1; i += 3) {
- nsvg__xformPoint(
- &curve[2], &curve[3], path->pts[(i + 1) * 2], path->pts[(i + 1) * 2 + 1], xform);
- nsvg__xformPoint(
- &curve[4], &curve[5], path->pts[(i + 2) * 2], path->pts[(i + 2) * 2 + 1], xform);
- nsvg__xformPoint(
- &curve[6], &curve[7], path->pts[(i + 3) * 2], path->pts[(i + 3) * 2 + 1], xform);
- nsvg__curveBounds(curveBounds, curve);
- if (first) {
- bounds[0] = curveBounds[0];
- bounds[1] = curveBounds[1];
- bounds[2] = curveBounds[2];
- bounds[3] = curveBounds[3];
- first = 0;
- }
- else {
- bounds[0] = nsvg__minf(bounds[0], curveBounds[0]);
- bounds[1] = nsvg__minf(bounds[1], curveBounds[1]);
- bounds[2] = nsvg__maxf(bounds[2], curveBounds[2]);
- bounds[3] = nsvg__maxf(bounds[3], curveBounds[3]);
- }
- curve[0] = curve[6];
- curve[1] = curve[7];
- }
- }
-}
-
-static void nsvg__addShape(NSVGparser *p)
-{
- NSVGattrib *attr = nsvg__getAttr(p);
- float scale = 1.0f;
- NSVGshape *shape;
- NSVGpath *path;
- int i;
-
- if (p->plist == NULL)
- return;
-
- shape = (NSVGshape *)malloc(sizeof(NSVGshape));
- if (shape == NULL)
- goto error;
- memset(shape, 0, sizeof(NSVGshape));
-
- memcpy(shape->id, attr->id, sizeof shape->id);
- /* Copy parent id from breadcrumb. */
- if (p->breadcrumb_len > 0) {
- memcpy(shape->id_parent, p->breadcrumb[0], sizeof shape->id_parent);
- }
- else {
- memcpy(shape->id_parent, attr->id, sizeof shape->id_parent);
- }
-
- scale = nsvg__getAverageScale(attr->xform);
- shape->strokeWidth = attr->strokeWidth * scale;
- shape->strokeDashOffset = attr->strokeDashOffset * scale;
- shape->strokeDashCount = (char)attr->strokeDashCount;
- for (i = 0; i < attr->strokeDashCount; i++)
- shape->strokeDashArray[i] = attr->strokeDashArray[i] * scale;
- shape->strokeLineJoin = attr->strokeLineJoin;
- shape->strokeLineCap = attr->strokeLineCap;
- shape->miterLimit = attr->miterLimit;
- shape->fillRule = attr->fillRule;
- shape->opacity = attr->opacity;
-
- shape->paths = p->plist;
- p->plist = NULL;
-
- // Calculate shape bounds
- shape->bounds[0] = shape->paths->bounds[0];
- shape->bounds[1] = shape->paths->bounds[1];
- shape->bounds[2] = shape->paths->bounds[2];
- shape->bounds[3] = shape->paths->bounds[3];
- for (path = shape->paths->next; path != NULL; path = path->next) {
- shape->bounds[0] = nsvg__minf(shape->bounds[0], path->bounds[0]);
- shape->bounds[1] = nsvg__minf(shape->bounds[1], path->bounds[1]);
- shape->bounds[2] = nsvg__maxf(shape->bounds[2], path->bounds[2]);
- shape->bounds[3] = nsvg__maxf(shape->bounds[3], path->bounds[3]);
- }
-
- // Set fill
- if (attr->hasFill == 0) {
- shape->fill.type = NSVG_PAINT_NONE;
- }
- else if (attr->hasFill == 1) {
- shape->fill.type = NSVG_PAINT_COLOR;
- shape->fill.color = attr->fillColor;
- shape->fill.color |= (unsigned int)(attr->fillOpacity * 255) << 24;
- }
- else if (attr->hasFill == 2) {
- float inv[6], localBounds[4];
- nsvg__xformInverse(inv, attr->xform);
- nsvg__getLocalBounds(localBounds, shape, inv);
- shape->fill.gradient = nsvg__createGradient(
- p, attr->fillGradient, localBounds, &shape->fill.type);
- if (shape->fill.gradient == NULL) {
- shape->fill.type = NSVG_PAINT_NONE;
- }
- }
-
- // Set stroke
- if (attr->hasStroke == 0) {
- shape->stroke.type = NSVG_PAINT_NONE;
- }
- else if (attr->hasStroke == 1) {
- shape->stroke.type = NSVG_PAINT_COLOR;
- shape->stroke.color = attr->strokeColor;
- shape->stroke.color |= (unsigned int)(attr->strokeOpacity * 255) << 24;
- }
- else if (attr->hasStroke == 2) {
- float inv[6], localBounds[4];
- nsvg__xformInverse(inv, attr->xform);
- nsvg__getLocalBounds(localBounds, shape, inv);
- shape->stroke.gradient = nsvg__createGradient(
- p, attr->strokeGradient, localBounds, &shape->stroke.type);
- if (shape->stroke.gradient == NULL)
- shape->stroke.type = NSVG_PAINT_NONE;
- }
-
- // Set flags
- shape->flags = (attr->visible ? NSVG_FLAGS_VISIBLE : 0x00);
-
- // Add to tail
- if (p->image->shapes == NULL)
- p->image->shapes = shape;
- else
- p->shapesTail->next = shape;
- p->shapesTail = shape;
-
- return;
-
-error:
- if (shape)
- free(shape);
-}
-
-static void nsvg__addPath(NSVGparser *p, char closed)
-{
- NSVGattrib *attr = nsvg__getAttr(p);
- NSVGpath *path = NULL;
- float bounds[4];
- float *curve;
- int i;
-
- if (p->npts < 4)
- return;
-
- if (closed)
- nsvg__lineTo(p, p->pts[0], p->pts[1]);
-
- // Expect 1 + N*3 points (N = number of cubic bezier segments).
- if ((p->npts % 3) != 1)
- return;
-
- path = (NSVGpath *)malloc(sizeof(NSVGpath));
- if (path == NULL)
- goto error;
- memset(path, 0, sizeof(NSVGpath));
-
- path->pts = (float *)malloc(p->npts * 2 * sizeof(float));
- if (path->pts == NULL)
- goto error;
- path->closed = closed;
- path->npts = p->npts;
-
- // Transform path.
- for (i = 0; i < p->npts; ++i)
- nsvg__xformPoint(
- &path->pts[i * 2], &path->pts[i * 2 + 1], p->pts[i * 2], p->pts[i * 2 + 1], attr->xform);
-
- // Find bounds
- for (i = 0; i < path->npts - 1; i += 3) {
- curve = &path->pts[i * 2];
- nsvg__curveBounds(bounds, curve);
- if (i == 0) {
- path->bounds[0] = bounds[0];
- path->bounds[1] = bounds[1];
- path->bounds[2] = bounds[2];
- path->bounds[3] = bounds[3];
- }
- else {
- path->bounds[0] = nsvg__minf(path->bounds[0], bounds[0]);
- path->bounds[1] = nsvg__minf(path->bounds[1], bounds[1]);
- path->bounds[2] = nsvg__maxf(path->bounds[2], bounds[2]);
- path->bounds[3] = nsvg__maxf(path->bounds[3], bounds[3]);
- }
- }
-
- path->next = p->plist;
- p->plist = path;
-
- return;
-
-error:
- if (path != NULL) {
- if (path->pts != NULL)
- free(path->pts);
- free(path);
- }
-}
-
-// We roll our own string to float because the std library one uses locale and messes things up.
-static double nsvg__atof(const char *s)
-{
- char *cur = (char *)s;
- char *end = NULL;
- double res = 0.0, sign = 1.0;
- long long intPart = 0, fracPart = 0;
- char hasIntPart = 0, hasFracPart = 0;
-
- // Parse optional sign
- if (*cur == '+') {
- cur++;
- }
- else if (*cur == '-') {
- sign = -1;
- cur++;
- }
-
- // Parse integer part
- if (nsvg__isdigit(*cur)) {
- // Parse digit sequence
- intPart = strtoll(cur, &end, 10);
- if (cur != end) {
- res = (double)intPart;
- hasIntPart = 1;
- cur = end;
- }
- }
-
- // Parse fractional part.
- if (*cur == '.') {
- cur++; // Skip '.'
- if (nsvg__isdigit(*cur)) {
- // Parse digit sequence
- fracPart = strtoll(cur, &end, 10);
- if (cur != end) {
- res += (double)fracPart / pow(10.0, (double)(end - cur));
- hasFracPart = 1;
- cur = end;
- }
- }
- }
-
- // A valid number should have integer or fractional part.
- if (!hasIntPart && !hasFracPart)
- return 0.0;
-
- // Parse optional exponent
- if (*cur == 'e' || *cur == 'E') {
- long expPart = 0;
- cur++; // skip 'E'
- expPart = strtol(cur, &end, 10); // Parse digit sequence with sign
- if (cur != end) {
- res *= pow(10.0, (double)expPart);
- }
- }
-
- return res * sign;
-}
-
-static const char *nsvg__parseNumber(const char *s, char *it, const int size)
-{
- const int last = size - 1;
- int i = 0;
-
- // sign
- if (*s == '-' || *s == '+') {
- if (i < last)
- it[i++] = *s;
- s++;
- }
- // integer part
- while (*s && nsvg__isdigit(*s)) {
- if (i < last)
- it[i++] = *s;
- s++;
- }
- if (*s == '.') {
- // decimal point
- if (i < last)
- it[i++] = *s;
- s++;
- // fraction part
- while (*s && nsvg__isdigit(*s)) {
- if (i < last)
- it[i++] = *s;
- s++;
- }
- }
- // exponent
- if ((*s == 'e' || *s == 'E') && (s[1] != 'm' && s[1] != 'x')) {
- if (i < last)
- it[i++] = *s;
- s++;
- if (*s == '-' || *s == '+') {
- if (i < last)
- it[i++] = *s;
- s++;
- }
- while (*s && nsvg__isdigit(*s)) {
- if (i < last)
- it[i++] = *s;
- s++;
- }
- }
- it[i] = '\0';
-
- return s;
-}
-
-static const char *nsvg__getNextPathItem(const char *s, char *it, char cmd, int nargs)
-{
- it[0] = '\0';
- // Skip white spaces and commas
- while (*s && (nsvg__isspace(*s) || *s == ','))
- s++;
- if (!*s)
- return s;
-
- /* Blender: Special case for arc command's 4th and 5th arguments. */
- if (ELEM(cmd, 'a', 'A') && ELEM(nargs, 3, 4)) {
- it[0] = s[0];
- it[1] = '\0';
- s++;
- return s;
- }
-
- if (*s == '-' || *s == '+' || *s == '.' || nsvg__isdigit(*s)) {
- s = nsvg__parseNumber(s, it, 64);
- }
- else {
- // Parse command
- it[0] = *s++;
- it[1] = '\0';
- return s;
- }
-
- return s;
-}
-
-static unsigned int nsvg__parseColorHex(const char *str)
-{
- unsigned int c = 0, r = 0, g = 0, b = 0;
- int n = 0;
- str++; // skip #
- // Calculate number of characters.
- while (str[n] && !nsvg__isspace(str[n]))
- n++;
- if (n == 6) {
- sscanf(str, "%x", &c);
- }
- else if (n == 3) {
- sscanf(str, "%x", &c);
- c = (c & 0xf) | ((c & 0xf0) << 4) | ((c & 0xf00) << 8);
- c |= c << 4;
- }
- r = (c >> 16) & 0xff;
- g = (c >> 8) & 0xff;
- b = c & 0xff;
- return NSVG_RGB(r, g, b);
-}
-
-static unsigned int nsvg__parseColorRGB(const char *str)
-{
- int r = -1, g = -1, b = -1;
- char s1[32] = "", s2[32] = "";
- sscanf(str + 4, "%d%[%%, \t]%d%[%%, \t]%d", &r, s1, &g, s2, &b);
- if (strchr(s1, '%')) {
- return NSVG_RGB((r * 255) / 100, (g * 255) / 100, (b * 255) / 100);
- }
- else {
- return NSVG_RGB(r, g, b);
- }
-}
-
-typedef struct NSVGNamedColor {
- const char *name;
- unsigned int color;
-} NSVGNamedColor;
-
-NSVGNamedColor nsvg__colors[] = {
-
- {"red", NSVG_RGB(255, 0, 0)},
- {"green", NSVG_RGB(0, 128, 0)},
- {"blue", NSVG_RGB(0, 0, 255)},
- {"yellow", NSVG_RGB(255, 255, 0)},
- {"cyan", NSVG_RGB(0, 255, 255)},
- {"magenta", NSVG_RGB(255, 0, 255)},
- {"black", NSVG_RGB(0, 0, 0)},
- {"grey", NSVG_RGB(128, 128, 128)},
- {"gray", NSVG_RGB(128, 128, 128)},
- {"white", NSVG_RGB(255, 255, 255)},
-
-#ifdef NANOSVG_ALL_COLOR_KEYWORDS
- {"aliceblue", NSVG_RGB(240, 248, 255)},
- {"antiquewhite", NSVG_RGB(250, 235, 215)},
- {"aqua", NSVG_RGB(0, 255, 255)},
- {"aquamarine", NSVG_RGB(127, 255, 212)},
- {"azure", NSVG_RGB(240, 255, 255)},
- {"beige", NSVG_RGB(245, 245, 220)},
- {"bisque", NSVG_RGB(255, 228, 196)},
- {"blanchedalmond", NSVG_RGB(255, 235, 205)},
- {"blueviolet", NSVG_RGB(138, 43, 226)},
- {"brown", NSVG_RGB(165, 42, 42)},
- {"burlywood", NSVG_RGB(222, 184, 135)},
- {"cadetblue", NSVG_RGB(95, 158, 160)},
- {"chartreuse", NSVG_RGB(127, 255, 0)},
- {"chocolate", NSVG_RGB(210, 105, 30)},
- {"coral", NSVG_RGB(255, 127, 80)},
- {"cornflowerblue", NSVG_RGB(100, 149, 237)},
- {"cornsilk", NSVG_RGB(255, 248, 220)},
- {"crimson", NSVG_RGB(220, 20, 60)},
- {"darkblue", NSVG_RGB(0, 0, 139)},
- {"darkcyan", NSVG_RGB(0, 139, 139)},
- {"darkgoldenrod", NSVG_RGB(184, 134, 11)},
- {"darkgray", NSVG_RGB(169, 169, 169)},
- {"darkgreen", NSVG_RGB(0, 100, 0)},
- {"darkgrey", NSVG_RGB(169, 169, 169)},
- {"darkkhaki", NSVG_RGB(189, 183, 107)},
- {"darkmagenta", NSVG_RGB(139, 0, 139)},
- {"darkolivegreen", NSVG_RGB(85, 107, 47)},
- {"darkorange", NSVG_RGB(255, 140, 0)},
- {"darkorchid", NSVG_RGB(153, 50, 204)},
- {"darkred", NSVG_RGB(139, 0, 0)},
- {"darksalmon", NSVG_RGB(233, 150, 122)},
- {"darkseagreen", NSVG_RGB(143, 188, 143)},
- {"darkslateblue", NSVG_RGB(72, 61, 139)},
- {"darkslategray", NSVG_RGB(47, 79, 79)},
- {"darkslategrey", NSVG_RGB(47, 79, 79)},
- {"darkturquoise", NSVG_RGB(0, 206, 209)},
- {"darkviolet", NSVG_RGB(148, 0, 211)},
- {"deeppink", NSVG_RGB(255, 20, 147)},
- {"deepskyblue", NSVG_RGB(0, 191, 255)},
- {"dimgray", NSVG_RGB(105, 105, 105)},
- {"dimgrey", NSVG_RGB(105, 105, 105)},
- {"dodgerblue", NSVG_RGB(30, 144, 255)},
- {"firebrick", NSVG_RGB(178, 34, 34)},
- {"floralwhite", NSVG_RGB(255, 250, 240)},
- {"forestgreen", NSVG_RGB(34, 139, 34)},
- {"fuchsia", NSVG_RGB(255, 0, 255)},
- {"gainsboro", NSVG_RGB(220, 220, 220)},
- {"ghostwhite", NSVG_RGB(248, 248, 255)},
- {"gold", NSVG_RGB(255, 215, 0)},
- {"goldenrod", NSVG_RGB(218, 165, 32)},
- {"greenyellow", NSVG_RGB(173, 255, 47)},
- {"honeydew", NSVG_RGB(240, 255, 240)},
- {"hotpink", NSVG_RGB(255, 105, 180)},
- {"indianred", NSVG_RGB(205, 92, 92)},
- {"indigo", NSVG_RGB(75, 0, 130)},
- {"ivory", NSVG_RGB(255, 255, 240)},
- {"khaki", NSVG_RGB(240, 230, 140)},
- {"lavender", NSVG_RGB(230, 230, 250)},
- {"lavenderblush", NSVG_RGB(255, 240, 245)},
- {"lawngreen", NSVG_RGB(124, 252, 0)},
- {"lemonchiffon", NSVG_RGB(255, 250, 205)},
- {"lightblue", NSVG_RGB(173, 216, 230)},
- {"lightcoral", NSVG_RGB(240, 128, 128)},
- {"lightcyan", NSVG_RGB(224, 255, 255)},
- {"lightgoldenrodyellow", NSVG_RGB(250, 250, 210)},
- {"lightgray", NSVG_RGB(211, 211, 211)},
- {"lightgreen", NSVG_RGB(144, 238, 144)},
- {"lightgrey", NSVG_RGB(211, 211, 211)},
- {"lightpink", NSVG_RGB(255, 182, 193)},
- {"lightsalmon", NSVG_RGB(255, 160, 122)},
- {"lightseagreen", NSVG_RGB(32, 178, 170)},
- {"lightskyblue", NSVG_RGB(135, 206, 250)},
- {"lightslategray", NSVG_RGB(119, 136, 153)},
- {"lightslategrey", NSVG_RGB(119, 136, 153)},
- {"lightsteelblue", NSVG_RGB(176, 196, 222)},
- {"lightyellow", NSVG_RGB(255, 255, 224)},
- {"lime", NSVG_RGB(0, 255, 0)},
- {"limegreen", NSVG_RGB(50, 205, 50)},
- {"linen", NSVG_RGB(250, 240, 230)},
- {"maroon", NSVG_RGB(128, 0, 0)},
- {"mediumaquamarine", NSVG_RGB(102, 205, 170)},
- {"mediumblue", NSVG_RGB(0, 0, 205)},
- {"mediumorchid", NSVG_RGB(186, 85, 211)},
- {"mediumpurple", NSVG_RGB(147, 112, 219)},
- {"mediumseagreen", NSVG_RGB(60, 179, 113)},
- {"mediumslateblue", NSVG_RGB(123, 104, 238)},
- {"mediumspringgreen", NSVG_RGB(0, 250, 154)},
- {"mediumturquoise", NSVG_RGB(72, 209, 204)},
- {"mediumvioletred", NSVG_RGB(199, 21, 133)},
- {"midnightblue", NSVG_RGB(25, 25, 112)},
- {"mintcream", NSVG_RGB(245, 255, 250)},
- {"mistyrose", NSVG_RGB(255, 228, 225)},
- {"moccasin", NSVG_RGB(255, 228, 181)},
- {"navajowhite", NSVG_RGB(255, 222, 173)},
- {"navy", NSVG_RGB(0, 0, 128)},
- {"oldlace", NSVG_RGB(253, 245, 230)},
- {"olive", NSVG_RGB(128, 128, 0)},
- {"olivedrab", NSVG_RGB(107, 142, 35)},
- {"orange", NSVG_RGB(255, 165, 0)},
- {"orangered", NSVG_RGB(255, 69, 0)},
- {"orchid", NSVG_RGB(218, 112, 214)},
- {"palegoldenrod", NSVG_RGB(238, 232, 170)},
- {"palegreen", NSVG_RGB(152, 251, 152)},
- {"paleturquoise", NSVG_RGB(175, 238, 238)},
- {"palevioletred", NSVG_RGB(219, 112, 147)},
- {"papayawhip", NSVG_RGB(255, 239, 213)},
- {"peachpuff", NSVG_RGB(255, 218, 185)},
- {"peru", NSVG_RGB(205, 133, 63)},
- {"pink", NSVG_RGB(255, 192, 203)},
- {"plum", NSVG_RGB(221, 160, 221)},
- {"powderblue", NSVG_RGB(176, 224, 230)},
- {"purple", NSVG_RGB(128, 0, 128)},
- {"rosybrown", NSVG_RGB(188, 143, 143)},
- {"royalblue", NSVG_RGB(65, 105, 225)},
- {"saddlebrown", NSVG_RGB(139, 69, 19)},
- {"salmon", NSVG_RGB(250, 128, 114)},
- {"sandybrown", NSVG_RGB(244, 164, 96)},
- {"seagreen", NSVG_RGB(46, 139, 87)},
- {"seashell", NSVG_RGB(255, 245, 238)},
- {"sienna", NSVG_RGB(160, 82, 45)},
- {"silver", NSVG_RGB(192, 192, 192)},
- {"skyblue", NSVG_RGB(135, 206, 235)},
- {"slateblue", NSVG_RGB(106, 90, 205)},
- {"slategray", NSVG_RGB(112, 128, 144)},
- {"slategrey", NSVG_RGB(112, 128, 144)},
- {"snow", NSVG_RGB(255, 250, 250)},
- {"springgreen", NSVG_RGB(0, 255, 127)},
- {"steelblue", NSVG_RGB(70, 130, 180)},
- {"tan", NSVG_RGB(210, 180, 140)},
- {"teal", NSVG_RGB(0, 128, 128)},
- {"thistle", NSVG_RGB(216, 191, 216)},
- {"tomato", NSVG_RGB(255, 99, 71)},
- {"turquoise", NSVG_RGB(64, 224, 208)},
- {"violet", NSVG_RGB(238, 130, 238)},
- {"wheat", NSVG_RGB(245, 222, 179)},
- {"whitesmoke", NSVG_RGB(245, 245, 245)},
- {"yellowgreen", NSVG_RGB(154, 205, 50)},
-#endif
-};
-
-static unsigned int nsvg__parseColorName(const char *str)
-{
- int i, ncolors = sizeof(nsvg__colors) / sizeof(NSVGNamedColor);
-
- for (i = 0; i < ncolors; i++) {
- if (strcmp(nsvg__colors[i].name, str) == 0) {
- return nsvg__colors[i].color;
- }
- }
-
- return NSVG_RGB(128, 128, 128);
-}
-
-static unsigned int nsvg__parseColor(const char *str)
-{
- size_t len = 0;
- while (*str == ' ')
- ++str;
- len = strlen(str);
- if (len >= 1 && *str == '#')
- return nsvg__parseColorHex(str);
- else if (len >= 4 && str[0] == 'r' && str[1] == 'g' && str[2] == 'b' && str[3] == '(')
- return nsvg__parseColorRGB(str);
- return nsvg__parseColorName(str);
-}
-
-static float nsvg__parseOpacity(const char *str)
-{
- float val = nsvg__atof(str);
- if (val < 0.0f)
- val = 0.0f;
- if (val > 1.0f)
- val = 1.0f;
- return val;
-}
-
-static float nsvg__parseMiterLimit(const char *str)
-{
- float val = nsvg__atof(str);
- if (val < 0.0f)
- val = 0.0f;
- return val;
-}
-
-static int nsvg__parseUnits(const char *units)
-{
- if (units[0] == 'p' && units[1] == 'x')
- return NSVG_UNITS_PX;
- else if (units[0] == 'p' && units[1] == 't')
- return NSVG_UNITS_PT;
- else if (units[0] == 'p' && units[1] == 'c')
- return NSVG_UNITS_PC;
- else if (units[0] == 'm' && units[1] == 'm')
- return NSVG_UNITS_MM;
- else if (units[0] == 'c' && units[1] == 'm')
- return NSVG_UNITS_CM;
- else if (units[0] == 'i' && units[1] == 'n')
- return NSVG_UNITS_IN;
- else if (units[0] == '%')
- return NSVG_UNITS_PERCENT;
- else if (units[0] == 'e' && units[1] == 'm')
- return NSVG_UNITS_EM;
- else if (units[0] == 'e' && units[1] == 'x')
- return NSVG_UNITS_EX;
- return NSVG_UNITS_USER;
-}
-
-static int nsvg__isCoordinate(const char *s)
-{
- // optional sign
- if (*s == '-' || *s == '+')
- s++;
- // must have at least one digit, or start by a dot
- return (nsvg__isdigit(*s) || *s == '.');
-}
-
-static NSVGcoordinate nsvg__parseCoordinateRaw(const char *str)
-{
- NSVGcoordinate coord = {0, NSVG_UNITS_USER};
- char buf[64];
- coord.units = nsvg__parseUnits(nsvg__parseNumber(str, buf, 64));
- coord.value = nsvg__atof(buf);
- return coord;
-}
-
-static NSVGcoordinate nsvg__coord(float v, int units)
-{
- NSVGcoordinate coord = {v, units};
- return coord;
-}
-
-static float nsvg__parseCoordinate(NSVGparser *p, const char *str, float orig, float length)
-{
- NSVGcoordinate coord = nsvg__parseCoordinateRaw(str);
- return nsvg__convertToPixels(p, coord, orig, length);
-}
-
-static int nsvg__parseTransformArgs(const char *str, float *args, int maxNa, int *na)
-{
- const char *end;
- const char *ptr;
- char it[64];
-
- *na = 0;
- ptr = str;
- while (*ptr && *ptr != '(')
- ++ptr;
- if (*ptr == 0)
- return 1;
- end = ptr;
- while (*end && *end != ')')
- ++end;
- if (*end == 0)
- return 1;
-
- while (ptr < end) {
- if (*ptr == '-' || *ptr == '+' || *ptr == '.' || nsvg__isdigit(*ptr)) {
- if (*na >= maxNa)
- return 0;
- ptr = nsvg__parseNumber(ptr, it, 64);
- args[(*na)++] = (float)nsvg__atof(it);
- }
- else {
- ++ptr;
- }
- }
- return (int)(end - str);
-}
-
-static int nsvg__parseMatrix(float *xform, const char *str)
-{
- float t[6];
- int na = 0;
- int len = nsvg__parseTransformArgs(str, t, 6, &na);
- if (na != 6)
- return len;
- memcpy(xform, t, sizeof(float) * 6);
- return len;
-}
-
-static int nsvg__parseTranslate(float *xform, const char *str)
-{
- float args[2];
- float t[6];
- int na = 0;
- int len = nsvg__parseTransformArgs(str, args, 2, &na);
- if (na == 1)
- args[1] = 0.0;
-
- nsvg__xformSetTranslation(t, args[0], args[1]);
- memcpy(xform, t, sizeof(float) * 6);
- return len;
-}
-
-static int nsvg__parseScale(float *xform, const char *str)
-{
- float args[2];
- int na = 0;
- float t[6];
- int len = nsvg__parseTransformArgs(str, args, 2, &na);
- if (na == 1)
- args[1] = args[0];
- nsvg__xformSetScale(t, args[0], args[1]);
- memcpy(xform, t, sizeof(float) * 6);
- return len;
-}
-
-static int nsvg__parseSkewX(float *xform, const char *str)
-{
- float args[1];
- int na = 0;
- float t[6];
- int len = nsvg__parseTransformArgs(str, args, 1, &na);
- nsvg__xformSetSkewX(t, args[0] / 180.0f * NSVG_PI);
- memcpy(xform, t, sizeof(float) * 6);
- return len;
-}
-
-static int nsvg__parseSkewY(float *xform, const char *str)
-{
- float args[1];
- int na = 0;
- float t[6];
- int len = nsvg__parseTransformArgs(str, args, 1, &na);
- nsvg__xformSetSkewY(t, args[0] / 180.0f * NSVG_PI);
- memcpy(xform, t, sizeof(float) * 6);
- return len;
-}
-
-static int nsvg__parseRotate(float *xform, const char *str)
-{
- float args[3];
- int na = 0;
- float m[6];
- float t[6];
- int len = nsvg__parseTransformArgs(str, args, 3, &na);
- if (na == 1)
- args[1] = args[2] = 0.0f;
- nsvg__xformIdentity(m);
-
- if (na > 1) {
- nsvg__xformSetTranslation(t, -args[1], -args[2]);
- nsvg__xformMultiply(m, t);
- }
-
- nsvg__xformSetRotation(t, args[0] / 180.0f * NSVG_PI);
- nsvg__xformMultiply(m, t);
-
- if (na > 1) {
- nsvg__xformSetTranslation(t, args[1], args[2]);
- nsvg__xformMultiply(m, t);
- }
-
- memcpy(xform, m, sizeof(float) * 6);
-
- return len;
-}
-
-static void nsvg__parseTransform(float *xform, const char *str)
-{
- float t[6];
- int len;
- nsvg__xformIdentity(xform);
- while (*str) {
- if (strncmp(str, "matrix", 6) == 0)
- len = nsvg__parseMatrix(t, str);
- else if (strncmp(str, "translate", 9) == 0)
- len = nsvg__parseTranslate(t, str);
- else if (strncmp(str, "scale", 5) == 0)
- len = nsvg__parseScale(t, str);
- else if (strncmp(str, "rotate", 6) == 0)
- len = nsvg__parseRotate(t, str);
- else if (strncmp(str, "skewX", 5) == 0)
- len = nsvg__parseSkewX(t, str);
- else if (strncmp(str, "skewY", 5) == 0)
- len = nsvg__parseSkewY(t, str);
- else {
- ++str;
- continue;
- }
- if (len != 0) {
- str += len;
- }
- else {
- ++str;
- continue;
- }
-
- nsvg__xformPremultiply(xform, t);
- }
-}
-
-static void nsvg__parseUrl(char *id, const char *str)
-{
- int i = 0;
- str += 4; // "url(";
- if (*str == '#')
- str++;
- while (i < 63 && *str != ')') {
- id[i] = *str++;
- i++;
- }
- id[i] = '\0';
-}
-
-static char nsvg__parseLineCap(const char *str)
-{
- if (strcmp(str, "butt") == 0)
- return NSVG_CAP_BUTT;
- else if (strcmp(str, "round") == 0)
- return NSVG_CAP_ROUND;
- else if (strcmp(str, "square") == 0)
- return NSVG_CAP_SQUARE;
- // TODO: handle inherit.
- return NSVG_CAP_BUTT;
-}
-
-static char nsvg__parseLineJoin(const char *str)
-{
- if (strcmp(str, "miter") == 0)
- return NSVG_JOIN_MITER;
- else if (strcmp(str, "round") == 0)
- return NSVG_JOIN_ROUND;
- else if (strcmp(str, "bevel") == 0)
- return NSVG_JOIN_BEVEL;
- // TODO: handle inherit.
- return NSVG_JOIN_MITER;
-}
-
-static char nsvg__parseFillRule(const char *str)
-{
- if (strcmp(str, "nonzero") == 0)
- return NSVG_FILLRULE_NONZERO;
- else if (strcmp(str, "evenodd") == 0)
- return NSVG_FILLRULE_EVENODD;
- // TODO: handle inherit.
- return NSVG_FILLRULE_NONZERO;
-}
-
-static const char *nsvg__getNextDashItem(const char *s, char *it)
-{
- int n = 0;
- it[0] = '\0';
- // Skip white spaces and commas
- while (*s && (nsvg__isspace(*s) || *s == ','))
- s++;
- // Advance until whitespace, comma or end.
- while (*s && (!nsvg__isspace(*s) && *s != ',')) {
- if (n < 63)
- it[n++] = *s;
- s++;
- }
- it[n++] = '\0';
- return s;
-}
-
-static int nsvg__parseStrokeDashArray(NSVGparser *p, const char *str, float *strokeDashArray)
-{
- char item[64];
- int count = 0, i;
- float sum = 0.0f;
-
- // Handle "none"
- if (str[0] == 'n')
- return 0;
-
- // Parse dashes
- while (*str) {
- str = nsvg__getNextDashItem(str, item);
- if (!*item)
- break;
- if (count < NSVG_MAX_DASHES)
- strokeDashArray[count++] = fabsf(
- nsvg__parseCoordinate(p, item, 0.0f, nsvg__actualLength(p)));
- }
-
- for (i = 0; i < count; i++)
- sum += strokeDashArray[i];
- if (sum <= 1e-6f)
- count = 0;
-
- return count;
-}
-
-static void nsvg__parseStyle(NSVGparser *p, const char *str);
-
-static int nsvg__parseAttr(NSVGparser *p, const char *name, const char *value)
-{
- float xform[6];
- NSVGattrib *attr = nsvg__getAttr(p);
- if (!attr)
- return 0;
-
- if (strcmp(name, "style") == 0) {
- nsvg__parseStyle(p, value);
- }
- else if (strcmp(name, "display") == 0) {
- if (strcmp(value, "none") == 0)
- attr->visible = 0;
- // Don't reset ->visible on display:inline, one display:none hides the whole subtree
- }
- else if (strcmp(name, "fill") == 0) {
- if (strcmp(value, "none") == 0) {
- attr->hasFill = 0;
- }
- else if (strncmp(value, "url(", 4) == 0) {
- attr->hasFill = 2;
- nsvg__parseUrl(attr->fillGradient, value);
- }
- else {
- attr->hasFill = 1;
- attr->fillColor = nsvg__parseColor(value);
- }
- }
- else if (strcmp(name, "opacity") == 0) {
- attr->opacity = nsvg__parseOpacity(value);
- }
- else if (strcmp(name, "fill-opacity") == 0) {
- attr->fillOpacity = nsvg__parseOpacity(value);
- }
- else if (strcmp(name, "stroke") == 0) {
- if (strcmp(value, "none") == 0) {
- attr->hasStroke = 0;
- }
- else if (strncmp(value, "url(", 4) == 0) {
- attr->hasStroke = 2;
- nsvg__parseUrl(attr->strokeGradient, value);
- }
- else {
- attr->hasStroke = 1;
- attr->strokeColor = nsvg__parseColor(value);
- }
- }
- else if (strcmp(name, "stroke-width") == 0) {
- attr->strokeWidth = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p));
- }
- else if (strcmp(name, "stroke-dasharray") == 0) {
- attr->strokeDashCount = nsvg__parseStrokeDashArray(p, value, attr->strokeDashArray);
- }
- else if (strcmp(name, "stroke-dashoffset") == 0) {
- attr->strokeDashOffset = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p));
- }
- else if (strcmp(name, "stroke-opacity") == 0) {
- attr->strokeOpacity = nsvg__parseOpacity(value);
- }
- else if (strcmp(name, "stroke-linecap") == 0) {
- attr->strokeLineCap = nsvg__parseLineCap(value);
- }
- else if (strcmp(name, "stroke-linejoin") == 0) {
- attr->strokeLineJoin = nsvg__parseLineJoin(value);
- }
- else if (strcmp(name, "stroke-miterlimit") == 0) {
- attr->miterLimit = nsvg__parseMiterLimit(value);
- }
- else if (strcmp(name, "fill-rule") == 0) {
- attr->fillRule = nsvg__parseFillRule(value);
- }
- else if (strcmp(name, "font-size") == 0) {
- attr->fontSize = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p));
- }
- else if (strcmp(name, "transform") == 0) {
- nsvg__parseTransform(xform, value);
- nsvg__xformPremultiply(attr->xform, xform);
- }
- else if (strcmp(name, "stop-color") == 0) {
- attr->stopColor = nsvg__parseColor(value);
- }
- else if (strcmp(name, "stop-opacity") == 0) {
- attr->stopOpacity = nsvg__parseOpacity(value);
- }
- else if (strcmp(name, "offset") == 0) {
- attr->stopOffset = nsvg__parseCoordinate(p, value, 0.0f, 1.0f);
- }
- else if (strcmp(name, "id") == 0) {
- strncpy(attr->id, value, 63);
- attr->id[63] = '\0';
- }
- else {
- return 0;
- }
- return 1;
-}
-
-static int nsvg__parseNameValue(NSVGparser *p, const char *start, const char *end)
-{
- const char *str;
- const char *val;
- char name[512];
- char value[512];
- int n;
-
- str = start;
- while (str < end && *str != ':')
- ++str;
-
- val = str;
-
- // Right Trim
- while (str > start && (*str == ':' || nsvg__isspace(*str)))
- --str;
- ++str;
-
- n = (int)(str - start);
- if (n > 511)
- n = 511;
- if (n)
- memcpy(name, start, n);
- name[n] = 0;
-
- while (val < end && (*val == ':' || nsvg__isspace(*val)))
- ++val;
-
- n = (int)(end - val);
- if (n > 511)
- n = 511;
- if (n)
- memcpy(value, val, n);
- value[n] = 0;
-
- return nsvg__parseAttr(p, name, value);
-}
-
-static void nsvg__parseStyle(NSVGparser *p, const char *str)
-{
- const char *start;
- const char *end;
-
- while (*str) {
- // Left Trim
- while (*str && nsvg__isspace(*str))
- ++str;
- start = str;
- while (*str && *str != ';')
- ++str;
- end = str;
-
- // Right Trim
- while (end > start && (*end == ';' || nsvg__isspace(*end)))
- --end;
- ++end;
-
- nsvg__parseNameValue(p, start, end);
- if (*str)
- ++str;
- }
-}
-
-static void nsvg__parseAttribs(NSVGparser *p, const char **attr)
-{
- int i;
- for (i = 0; attr[i]; i += 2) {
- if (strcmp(attr[i], "style") == 0)
- nsvg__parseStyle(p, attr[i + 1]);
- else
- nsvg__parseAttr(p, attr[i], attr[i + 1]);
- }
-}
-
-static int nsvg__getArgsPerElement(char cmd)
-{
- switch (cmd) {
- case 'v':
- case 'V':
- case 'h':
- case 'H':
- return 1;
- case 'm':
- case 'M':
- case 'l':
- case 'L':
- case 't':
- case 'T':
- return 2;
- case 'q':
- case 'Q':
- case 's':
- case 'S':
- return 4;
- case 'c':
- case 'C':
- return 6;
- case 'a':
- case 'A':
- return 7;
- case 'z':
- case 'Z':
- return 0;
- }
- return -1;
-}
-
-static void nsvg__pathMoveTo(NSVGparser *p, float *cpx, float *cpy, float *args, int rel)
-{
- if (rel) {
- *cpx += args[0];
- *cpy += args[1];
- }
- else {
- *cpx = args[0];
- *cpy = args[1];
- }
- nsvg__moveTo(p, *cpx, *cpy);
-}
-
-static void nsvg__pathLineTo(NSVGparser *p, float *cpx, float *cpy, float *args, int rel)
-{
- if (rel) {
- *cpx += args[0];
- *cpy += args[1];
- }
- else {
- *cpx = args[0];
- *cpy = args[1];
- }
- nsvg__lineTo(p, *cpx, *cpy);
-}
-
-static void nsvg__pathHLineTo(NSVGparser *p, float *cpx, float *cpy, float *args, int rel)
-{
- if (rel)
- *cpx += args[0];
- else
- *cpx = args[0];
- nsvg__lineTo(p, *cpx, *cpy);
-}
-
-static void nsvg__pathVLineTo(NSVGparser *p, float *cpx, float *cpy, float *args, int rel)
-{
- if (rel)
- *cpy += args[0];
- else
- *cpy = args[0];
- nsvg__lineTo(p, *cpx, *cpy);
-}
-
-static void nsvg__pathCubicBezTo(
- NSVGparser *p, float *cpx, float *cpy, float *cpx2, float *cpy2, float *args, int rel)
-{
- float x2, y2, cx1, cy1, cx2, cy2;
-
- if (rel) {
- cx1 = *cpx + args[0];
- cy1 = *cpy + args[1];
- cx2 = *cpx + args[2];
- cy2 = *cpy + args[3];
- x2 = *cpx + args[4];
- y2 = *cpy + args[5];
- }
- else {
- cx1 = args[0];
- cy1 = args[1];
- cx2 = args[2];
- cy2 = args[3];
- x2 = args[4];
- y2 = args[5];
- }
-
- nsvg__cubicBezTo(p, cx1, cy1, cx2, cy2, x2, y2);
-
- *cpx2 = cx2;
- *cpy2 = cy2;
- *cpx = x2;
- *cpy = y2;
-}
-
-static void nsvg__pathCubicBezShortTo(
- NSVGparser *p, float *cpx, float *cpy, float *cpx2, float *cpy2, float *args, int rel)
-{
- float x1, y1, x2, y2, cx1, cy1, cx2, cy2;
-
- x1 = *cpx;
- y1 = *cpy;
- if (rel) {
- cx2 = *cpx + args[0];
- cy2 = *cpy + args[1];
- x2 = *cpx + args[2];
- y2 = *cpy + args[3];
- }
- else {
- cx2 = args[0];
- cy2 = args[1];
- x2 = args[2];
- y2 = args[3];
- }
-
- cx1 = 2 * x1 - *cpx2;
- cy1 = 2 * y1 - *cpy2;
-
- nsvg__cubicBezTo(p, cx1, cy1, cx2, cy2, x2, y2);
-
- *cpx2 = cx2;
- *cpy2 = cy2;
- *cpx = x2;
- *cpy = y2;
-}
-
-static void nsvg__pathQuadBezTo(
- NSVGparser *p, float *cpx, float *cpy, float *cpx2, float *cpy2, float *args, int rel)
-{
- float x1, y1, x2, y2, cx, cy;
- float cx1, cy1, cx2, cy2;
-
- x1 = *cpx;
- y1 = *cpy;
- if (rel) {
- cx = *cpx + args[0];
- cy = *cpy + args[1];
- x2 = *cpx + args[2];
- y2 = *cpy + args[3];
- }
- else {
- cx = args[0];
- cy = args[1];
- x2 = args[2];
- y2 = args[3];
- }
-
- // Convert to cubic bezier
- cx1 = x1 + 2.0f / 3.0f * (cx - x1);
- cy1 = y1 + 2.0f / 3.0f * (cy - y1);
- cx2 = x2 + 2.0f / 3.0f * (cx - x2);
- cy2 = y2 + 2.0f / 3.0f * (cy - y2);
-
- nsvg__cubicBezTo(p, cx1, cy1, cx2, cy2, x2, y2);
-
- *cpx2 = cx;
- *cpy2 = cy;
- *cpx = x2;
- *cpy = y2;
-}
-
-static void nsvg__pathQuadBezShortTo(
- NSVGparser *p, float *cpx, float *cpy, float *cpx2, float *cpy2, float *args, int rel)
-{
- float x1, y1, x2, y2, cx, cy;
- float cx1, cy1, cx2, cy2;
-
- x1 = *cpx;
- y1 = *cpy;
- if (rel) {
- x2 = *cpx + args[0];
- y2 = *cpy + args[1];
- }
- else {
- x2 = args[0];
- y2 = args[1];
- }
-
- cx = 2 * x1 - *cpx2;
- cy = 2 * y1 - *cpy2;
-
- // Convert to cubix bezier
- cx1 = x1 + 2.0f / 3.0f * (cx - x1);
- cy1 = y1 + 2.0f / 3.0f * (cy - y1);
- cx2 = x2 + 2.0f / 3.0f * (cx - x2);
- cy2 = y2 + 2.0f / 3.0f * (cy - y2);
-
- nsvg__cubicBezTo(p, cx1, cy1, cx2, cy2, x2, y2);
-
- *cpx2 = cx;
- *cpy2 = cy;
- *cpx = x2;
- *cpy = y2;
-}
-
-static float nsvg__sqr(float x)
-{
- return x * x;
-}
-static float nsvg__vmag(float x, float y)
-{
- return sqrtf(x * x + y * y);
-}
-
-static float nsvg__vecrat(float ux, float uy, float vx, float vy)
-{
- return (ux * vx + uy * vy) / (nsvg__vmag(ux, uy) * nsvg__vmag(vx, vy));
-}
-
-static float nsvg__vecang(float ux, float uy, float vx, float vy)
-{
- float r = nsvg__vecrat(ux, uy, vx, vy);
- if (r < -1.0f)
- r = -1.0f;
- if (r > 1.0f)
- r = 1.0f;
- return ((ux * vy < uy * vx) ? -1.0f : 1.0f) * acosf(r);
-}
-
-static void nsvg__pathArcTo(NSVGparser *p, float *cpx, float *cpy, float *args, int rel)
-{
- // Ported from canvg (https://code.google.com/p/canvg/)
- float rx, ry, rotx;
- float x1, y1, x2, y2, cx, cy, dx, dy, d;
- float x1p, y1p, cxp, cyp, s, sa, sb;
- float ux, uy, vx, vy, a1, da;
- float x, y, tanx, tany, a, px = 0, py = 0, ptanx = 0, ptany = 0, t[6];
- float sinrx, cosrx;
- int fa, fs;
- int i, ndivs;
- float hda, kappa;
-
- rx = fabsf(args[0]); // y radius
- ry = fabsf(args[1]); // x radius
- rotx = args[2] / 180.0f * NSVG_PI; // x rotation angle
- fa = fabsf(args[3]) > 1e-6 ? 1 : 0; // Large arc
- fs = fabsf(args[4]) > 1e-6 ? 1 : 0; // Sweep direction
- x1 = *cpx; // start point
- y1 = *cpy;
- if (rel) { // end point
- x2 = *cpx + args[5];
- y2 = *cpy + args[6];
- }
- else {
- x2 = args[5];
- y2 = args[6];
- }
-
- dx = x1 - x2;
- dy = y1 - y2;
- d = sqrtf(dx * dx + dy * dy);
- if (d < 1e-6f || rx < 1e-6f || ry < 1e-6f) {
- // The arc degenerates to a line
- nsvg__lineTo(p, x2, y2);
- *cpx = x2;
- *cpy = y2;
- return;
- }
-
- sinrx = sinf(rotx);
- cosrx = cosf(rotx);
-
- // Convert to center point parameterization.
- // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
- // 1) Compute x1', y1'
- x1p = cosrx * dx / 2.0f + sinrx * dy / 2.0f;
- y1p = -sinrx * dx / 2.0f + cosrx * dy / 2.0f;
- d = nsvg__sqr(x1p) / nsvg__sqr(rx) + nsvg__sqr(y1p) / nsvg__sqr(ry);
- if (d > 1) {
- d = sqrtf(d);
- rx *= d;
- ry *= d;
- }
- // 2) Compute cx', cy'
- s = 0.0f;
- sa = nsvg__sqr(rx) * nsvg__sqr(ry) - nsvg__sqr(rx) * nsvg__sqr(y1p) -
- nsvg__sqr(ry) * nsvg__sqr(x1p);
- sb = nsvg__sqr(rx) * nsvg__sqr(y1p) + nsvg__sqr(ry) * nsvg__sqr(x1p);
- if (sa < 0.0f)
- sa = 0.0f;
- if (sb > 0.0f)
- s = sqrtf(sa / sb);
- if (fa == fs)
- s = -s;
- cxp = s * rx * y1p / ry;
- cyp = s * -ry * x1p / rx;
-
- // 3) Compute cx,cy from cx',cy'
- cx = (x1 + x2) / 2.0f + cosrx * cxp - sinrx * cyp;
- cy = (y1 + y2) / 2.0f + sinrx * cxp + cosrx * cyp;
-
- // 4) Calculate theta1, and delta theta.
- ux = (x1p - cxp) / rx;
- uy = (y1p - cyp) / ry;
- vx = (-x1p - cxp) / rx;
- vy = (-y1p - cyp) / ry;
- a1 = nsvg__vecang(1.0f, 0.0f, ux, uy); // Initial angle
- da = nsvg__vecang(ux, uy, vx, vy); // Delta angle
-
- // if (vecrat(ux,uy,vx,vy) <= -1.0f) da = NSVG_PI;
- // if (vecrat(ux,uy,vx,vy) >= 1.0f) da = 0;
-
- if (fs == 0 && da > 0)
- da -= 2 * NSVG_PI;
- else if (fs == 1 && da < 0)
- da += 2 * NSVG_PI;
-
- // Approximate the arc using cubic spline segments.
- t[0] = cosrx;
- t[1] = sinrx;
- t[2] = -sinrx;
- t[3] = cosrx;
- t[4] = cx;
- t[5] = cy;
-
- // Split arc into max 90 degree segments.
- // The loop assumes an iteration per end point (including start and end), this +1.
- ndivs = (int)(fabsf(da) / (NSVG_PI * 0.5f) + 1.0f);
- hda = (da / (float)ndivs) / 2.0f;
- // Fix for ticket #179: division by 0: avoid cotangens around 0 (infinite)
- if ((hda < 1e-3f) && (hda > -1e-3f))
- hda *= 0.5f;
- else
- hda = (1.0f - cosf(hda)) / sinf(hda);
- kappa = fabsf(4.0f / 3.0f * hda);
- if (da < 0.0f)
- kappa = -kappa;
-
- for (i = 0; i <= ndivs; i++) {
- a = a1 + da * ((float)i / (float)ndivs);
- dx = cosf(a);
- dy = sinf(a);
- nsvg__xformPoint(&x, &y, dx * rx, dy * ry, t); // position
- nsvg__xformVec(&tanx, &tany, -dy * rx * kappa, dx * ry * kappa, t); // tangent
- if (i > 0)
- nsvg__cubicBezTo(p, px + ptanx, py + ptany, x - tanx, y - tany, x, y);
- px = x;
- py = y;
- ptanx = tanx;
- ptany = tany;
- }
-
- *cpx = x2;
- *cpy = y2;
-}
-
-static void nsvg__parsePath(NSVGparser *p, const char **attr)
-{
- const char *s = NULL;
- char cmd = '\0';
- float args[10];
- int nargs;
- int rargs = 0;
- char initPoint;
- float cpx, cpy, cpx2, cpy2;
- const char *tmp[4];
- char closedFlag;
- int i;
- char item[64];
-
- for (i = 0; attr[i]; i += 2) {
- if (strcmp(attr[i], "d") == 0) {
- s = attr[i + 1];
- }
- else {
- tmp[0] = attr[i];
- tmp[1] = attr[i + 1];
- tmp[2] = 0;
- tmp[3] = 0;
- nsvg__parseAttribs(p, tmp);
- }
- }
-
- if (s) {
- nsvg__resetPath(p);
- cpx = 0;
- cpy = 0;
- cpx2 = 0;
- cpy2 = 0;
- initPoint = 0;
- closedFlag = 0;
- nargs = 0;
-
- while (*s) {
- s = nsvg__getNextPathItem(s, item, cmd, nargs);
- if (!*item)
- break;
- if (cmd != '\0' && nsvg__isCoordinate(item)) {
- if (nargs < 10)
- args[nargs++] = (float)nsvg__atof(item);
- if (nargs >= rargs) {
- switch (cmd) {
- case 'm':
- case 'M':
- nsvg__pathMoveTo(p, &cpx, &cpy, args, cmd == 'm' ? 1 : 0);
- // Moveto can be followed by multiple coordinate pairs,
- // which should be treated as linetos.
- cmd = (cmd == 'm') ? 'l' : 'L';
- rargs = nsvg__getArgsPerElement(cmd);
- cpx2 = cpx;
- cpy2 = cpy;
- initPoint = 1;
- break;
- case 'l':
- case 'L':
- nsvg__pathLineTo(p, &cpx, &cpy, args, cmd == 'l' ? 1 : 0);
- cpx2 = cpx;
- cpy2 = cpy;
- break;
- case 'H':
- case 'h':
- nsvg__pathHLineTo(p, &cpx, &cpy, args, cmd == 'h' ? 1 : 0);
- cpx2 = cpx;
- cpy2 = cpy;
- break;
- case 'V':
- case 'v':
- nsvg__pathVLineTo(p, &cpx, &cpy, args, cmd == 'v' ? 1 : 0);
- cpx2 = cpx;
- cpy2 = cpy;
- break;
- case 'C':
- case 'c':
- nsvg__pathCubicBezTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 'c' ? 1 : 0);
- break;
- case 'S':
- case 's':
- nsvg__pathCubicBezShortTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 's' ? 1 : 0);
- break;
- case 'Q':
- case 'q':
- nsvg__pathQuadBezTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 'q' ? 1 : 0);
- break;
- case 'T':
- case 't':
- nsvg__pathQuadBezShortTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 't' ? 1 : 0);
- break;
- case 'A':
- case 'a':
- nsvg__pathArcTo(p, &cpx, &cpy, args, cmd == 'a' ? 1 : 0);
- cpx2 = cpx;
- cpy2 = cpy;
- break;
- default:
- if (nargs >= 2) {
- cpx = args[nargs - 2];
- cpy = args[nargs - 1];
- cpx2 = cpx;
- cpy2 = cpy;
- }
- break;
- }
- nargs = 0;
- }
- }
- else {
- cmd = item[0];
- if (cmd == 'M' || cmd == 'm') {
- // Commit path.
- if (p->npts > 0)
- nsvg__addPath(p, closedFlag);
- // Start new subpath.
- nsvg__resetPath(p);
- closedFlag = 0;
- nargs = 0;
- }
- else if (initPoint == 0) {
- // Do not allow other commands until initial point has been set (moveTo called once).
- cmd = '\0';
- }
- if (cmd == 'Z' || cmd == 'z') {
- closedFlag = 1;
- // Commit path.
- if (p->npts > 0) {
- // Move current point to first point
- cpx = p->pts[0];
- cpy = p->pts[1];
- cpx2 = cpx;
- cpy2 = cpy;
- nsvg__addPath(p, closedFlag);
- }
- // Start new subpath.
- nsvg__resetPath(p);
- nsvg__moveTo(p, cpx, cpy);
- closedFlag = 0;
- nargs = 0;
- }
- rargs = nsvg__getArgsPerElement(cmd);
- if (rargs == -1) {
- // Command not recognized
- cmd = '\0';
- rargs = 0;
- }
- }
- }
- // Commit path.
- if (p->npts)
- nsvg__addPath(p, closedFlag);
- }
-
- nsvg__addShape(p);
-}
-
-static void nsvg__parseRect(NSVGparser *p, const char **attr)
-{
- float x = 0.0f;
- float y = 0.0f;
- float w = 0.0f;
- float h = 0.0f;
- float rx = -1.0f; // marks not set
- float ry = -1.0f;
- int i;
-
- for (i = 0; attr[i]; i += 2) {
- if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
- if (strcmp(attr[i], "x") == 0)
- x = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
- if (strcmp(attr[i], "y") == 0)
- y = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
- if (strcmp(attr[i], "width") == 0)
- w = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, nsvg__actualWidth(p));
- if (strcmp(attr[i], "height") == 0)
- h = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, nsvg__actualHeight(p));
- if (strcmp(attr[i], "rx") == 0)
- rx = fabsf(nsvg__parseCoordinate(p, attr[i + 1], 0.0f, nsvg__actualWidth(p)));
- if (strcmp(attr[i], "ry") == 0)
- ry = fabsf(nsvg__parseCoordinate(p, attr[i + 1], 0.0f, nsvg__actualHeight(p)));
- }
- }
-
- if (rx < 0.0f && ry > 0.0f)
- rx = ry;
- if (ry < 0.0f && rx > 0.0f)
- ry = rx;
- if (rx < 0.0f)
- rx = 0.0f;
- if (ry < 0.0f)
- ry = 0.0f;
- if (rx > w / 2.0f)
- rx = w / 2.0f;
- if (ry > h / 2.0f)
- ry = h / 2.0f;
-
- if (w != 0.0f && h != 0.0f) {
- nsvg__resetPath(p);
-
- if (rx < 0.00001f || ry < 0.0001f) {
- nsvg__moveTo(p, x, y);
- nsvg__lineTo(p, x + w, y);
- nsvg__lineTo(p, x + w, y + h);
- nsvg__lineTo(p, x, y + h);
- }
- else {
- // Rounded rectangle
- nsvg__moveTo(p, x + rx, y);
- nsvg__lineTo(p, x + w - rx, y);
- nsvg__cubicBezTo(p,
- x + w - rx * (1 - NSVG_KAPPA90),
- y,
- x + w,
- y + ry * (1 - NSVG_KAPPA90),
- x + w,
- y + ry);
- nsvg__lineTo(p, x + w, y + h - ry);
- nsvg__cubicBezTo(p,
- x + w,
- y + h - ry * (1 - NSVG_KAPPA90),
- x + w - rx * (1 - NSVG_KAPPA90),
- y + h,
- x + w - rx,
- y + h);
- nsvg__lineTo(p, x + rx, y + h);
- nsvg__cubicBezTo(p,
- x + rx * (1 - NSVG_KAPPA90),
- y + h,
- x,
- y + h - ry * (1 - NSVG_KAPPA90),
- x,
- y + h - ry);
- nsvg__lineTo(p, x, y + ry);
- nsvg__cubicBezTo(
- p, x, y + ry * (1 - NSVG_KAPPA90), x + rx * (1 - NSVG_KAPPA90), y, x + rx, y);
- }
-
- nsvg__addPath(p, 1);
-
- nsvg__addShape(p);
- }
-}
-
-static void nsvg__parseCircle(NSVGparser *p, const char **attr)
-{
- float cx = 0.0f;
- float cy = 0.0f;
- float r = 0.0f;
- int i;
-
- for (i = 0; attr[i]; i += 2) {
- if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
- if (strcmp(attr[i], "cx") == 0)
- cx = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
- if (strcmp(attr[i], "cy") == 0)
- cy = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
- if (strcmp(attr[i], "r") == 0)
- r = fabsf(nsvg__parseCoordinate(p, attr[i + 1], 0.0f, nsvg__actualLength(p)));
- }
- }
-
- if (r > 0.0f) {
- nsvg__resetPath(p);
-
- nsvg__moveTo(p, cx + r, cy);
- nsvg__cubicBezTo(p, cx + r, cy + r * NSVG_KAPPA90, cx + r * NSVG_KAPPA90, cy + r, cx, cy + r);
- nsvg__cubicBezTo(p, cx - r * NSVG_KAPPA90, cy + r, cx - r, cy + r * NSVG_KAPPA90, cx - r, cy);
- nsvg__cubicBezTo(p, cx - r, cy - r * NSVG_KAPPA90, cx - r * NSVG_KAPPA90, cy - r, cx, cy - r);
- nsvg__cubicBezTo(p, cx + r * NSVG_KAPPA90, cy - r, cx + r, cy - r * NSVG_KAPPA90, cx + r, cy);
-
- nsvg__addPath(p, 1);
-
- nsvg__addShape(p);
- }
-}
-
-static void nsvg__parseEllipse(NSVGparser *p, const char **attr)
-{
- float cx = 0.0f;
- float cy = 0.0f;
- float rx = 0.0f;
- float ry = 0.0f;
- int i;
-
- for (i = 0; attr[i]; i += 2) {
- if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
- if (strcmp(attr[i], "cx") == 0)
- cx = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
- if (strcmp(attr[i], "cy") == 0)
- cy = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
- if (strcmp(attr[i], "rx") == 0)
- rx = fabsf(nsvg__parseCoordinate(p, attr[i + 1], 0.0f, nsvg__actualWidth(p)));
- if (strcmp(attr[i], "ry") == 0)
- ry = fabsf(nsvg__parseCoordinate(p, attr[i + 1], 0.0f, nsvg__actualHeight(p)));
- }
- }
-
- if (rx > 0.0f && ry > 0.0f) {
-
- nsvg__resetPath(p);
-
- nsvg__moveTo(p, cx + rx, cy);
- nsvg__cubicBezTo(
- p, cx + rx, cy + ry * NSVG_KAPPA90, cx + rx * NSVG_KAPPA90, cy + ry, cx, cy + ry);
- nsvg__cubicBezTo(
- p, cx - rx * NSVG_KAPPA90, cy + ry, cx - rx, cy + ry * NSVG_KAPPA90, cx - rx, cy);
- nsvg__cubicBezTo(
- p, cx - rx, cy - ry * NSVG_KAPPA90, cx - rx * NSVG_KAPPA90, cy - ry, cx, cy - ry);
- nsvg__cubicBezTo(
- p, cx + rx * NSVG_KAPPA90, cy - ry, cx + rx, cy - ry * NSVG_KAPPA90, cx + rx, cy);
-
- nsvg__addPath(p, 1);
-
- nsvg__addShape(p);
- }
-}
-
-static void nsvg__parseLine(NSVGparser *p, const char **attr)
-{
- float x1 = 0.0;
- float y1 = 0.0;
- float x2 = 0.0;
- float y2 = 0.0;
- int i;
-
- for (i = 0; attr[i]; i += 2) {
- if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
- if (strcmp(attr[i], "x1") == 0)
- x1 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
- if (strcmp(attr[i], "y1") == 0)
- y1 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
- if (strcmp(attr[i], "x2") == 0)
- x2 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
- if (strcmp(attr[i], "y2") == 0)
- y2 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
- }
- }
-
- nsvg__resetPath(p);
-
- nsvg__moveTo(p, x1, y1);
- nsvg__lineTo(p, x2, y2);
-
- nsvg__addPath(p, 0);
-
- nsvg__addShape(p);
-}
-
-static void nsvg__parsePoly(NSVGparser *p, const char **attr, int closeFlag)
-{
- int i;
- const char *s;
- float args[2];
- int nargs, npts = 0;
- char item[64];
-
- nsvg__resetPath(p);
-
- for (i = 0; attr[i]; i += 2) {
- if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
- if (strcmp(attr[i], "points") == 0) {
- s = attr[i + 1];
- nargs = 0;
- while (*s) {
- s = nsvg__getNextPathItem(s, item, '\0', nargs);
- args[nargs++] = (float)nsvg__atof(item);
- if (nargs >= 2) {
- if (npts == 0)
- nsvg__moveTo(p, args[0], args[1]);
- else
- nsvg__lineTo(p, args[0], args[1]);
- nargs = 0;
- npts++;
- }
- }
- }
- }
- }
-
- nsvg__addPath(p, (char)closeFlag);
-
- nsvg__addShape(p);
-}
-
-static void nsvg__parseSVG(NSVGparser *p, const char **attr)
-{
- int i;
- for (i = 0; attr[i]; i += 2) {
- if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
- if (strcmp(attr[i], "width") == 0) {
- p->image->width = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 0.0f);
- }
- else if (strcmp(attr[i], "height") == 0) {
- p->image->height = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 0.0f);
- }
- else if (strcmp(attr[i], "viewBox") == 0) {
- const char *s = attr[i + 1];
- char buf[64];
- s = nsvg__parseNumber(s, buf, 64);
- p->viewMinx = nsvg__atof(buf);
- while (*s && (nsvg__isspace(*s) || *s == '%' || *s == ','))
- s++;
- if (!*s)
- return;
- s = nsvg__parseNumber(s, buf, 64);
- p->viewMiny = nsvg__atof(buf);
- while (*s && (nsvg__isspace(*s) || *s == '%' || *s == ','))
- s++;
- if (!*s)
- return;
- s = nsvg__parseNumber(s, buf, 64);
- p->viewWidth = nsvg__atof(buf);
- while (*s && (nsvg__isspace(*s) || *s == '%' || *s == ','))
- s++;
- if (!*s)
- return;
- s = nsvg__parseNumber(s, buf, 64);
- p->viewHeight = nsvg__atof(buf);
- }
- else if (strcmp(attr[i], "preserveAspectRatio") == 0) {
- if (strstr(attr[i + 1], "none") != 0) {
- // No uniform scaling
- p->alignType = NSVG_ALIGN_NONE;
- }
- else {
- // Parse X align
- if (strstr(attr[i + 1], "xMin") != 0)
- p->alignX = NSVG_ALIGN_MIN;
- else if (strstr(attr[i + 1], "xMid") != 0)
- p->alignX = NSVG_ALIGN_MID;
- else if (strstr(attr[i + 1], "xMax") != 0)
- p->alignX = NSVG_ALIGN_MAX;
- // Parse X align
- if (strstr(attr[i + 1], "yMin") != 0)
- p->alignY = NSVG_ALIGN_MIN;
- else if (strstr(attr[i + 1], "yMid") != 0)
- p->alignY = NSVG_ALIGN_MID;
- else if (strstr(attr[i + 1], "yMax") != 0)
- p->alignY = NSVG_ALIGN_MAX;
- // Parse meet/slice
- p->alignType = NSVG_ALIGN_MEET;
- if (strstr(attr[i + 1], "slice") != 0)
- p->alignType = NSVG_ALIGN_SLICE;
- }
- }
- }
- }
-}
-
-static void nsvg__parseGradient(NSVGparser *p, const char **attr, char type)
-{
- int i;
- NSVGgradientData *grad = (NSVGgradientData *)malloc(sizeof(NSVGgradientData));
- if (grad == NULL)
- return;
- memset(grad, 0, sizeof(NSVGgradientData));
- grad->units = NSVG_OBJECT_SPACE;
- grad->type = type;
- if (grad->type == NSVG_PAINT_LINEAR_GRADIENT) {
- grad->linear.x1 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT);
- grad->linear.y1 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT);
- grad->linear.x2 = nsvg__coord(100.0f, NSVG_UNITS_PERCENT);
- grad->linear.y2 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT);
- }
- else if (grad->type == NSVG_PAINT_RADIAL_GRADIENT) {
- grad->radial.cx = nsvg__coord(50.0f, NSVG_UNITS_PERCENT);
- grad->radial.cy = nsvg__coord(50.0f, NSVG_UNITS_PERCENT);
- grad->radial.r = nsvg__coord(50.0f, NSVG_UNITS_PERCENT);
- }
-
- nsvg__xformIdentity(grad->xform);
-
- for (i = 0; attr[i]; i += 2) {
- if (strcmp(attr[i], "id") == 0) {
- strncpy(grad->id, attr[i + 1], 63);
- grad->id[63] = '\0';
- }
- else if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
- if (strcmp(attr[i], "gradientUnits") == 0) {
- if (strcmp(attr[i + 1], "objectBoundingBox") == 0)
- grad->units = NSVG_OBJECT_SPACE;
- else
- grad->units = NSVG_USER_SPACE;
- }
- else if (strcmp(attr[i], "gradientTransform") == 0) {
- nsvg__parseTransform(grad->xform, attr[i + 1]);
- }
- else if (strcmp(attr[i], "cx") == 0) {
- grad->radial.cx = nsvg__parseCoordinateRaw(attr[i + 1]);
- }
- else if (strcmp(attr[i], "cy") == 0) {
- grad->radial.cy = nsvg__parseCoordinateRaw(attr[i + 1]);
- }
- else if (strcmp(attr[i], "r") == 0) {
- grad->radial.r = nsvg__parseCoordinateRaw(attr[i + 1]);
- }
- else if (strcmp(attr[i], "fx") == 0) {
- grad->radial.fx = nsvg__parseCoordinateRaw(attr[i + 1]);
- }
- else if (strcmp(attr[i], "fy") == 0) {
- grad->radial.fy = nsvg__parseCoordinateRaw(attr[i + 1]);
- }
- else if (strcmp(attr[i], "x1") == 0) {
- grad->linear.x1 = nsvg__parseCoordinateRaw(attr[i + 1]);
- }
- else if (strcmp(attr[i], "y1") == 0) {
- grad->linear.y1 = nsvg__parseCoordinateRaw(attr[i + 1]);
- }
- else if (strcmp(attr[i], "x2") == 0) {
- grad->linear.x2 = nsvg__parseCoordinateRaw(attr[i + 1]);
- }
- else if (strcmp(attr[i], "y2") == 0) {
- grad->linear.y2 = nsvg__parseCoordinateRaw(attr[i + 1]);
- }
- else if (strcmp(attr[i], "spreadMethod") == 0) {
- if (strcmp(attr[i + 1], "pad") == 0)
- grad->spread = NSVG_SPREAD_PAD;
- else if (strcmp(attr[i + 1], "reflect") == 0)
- grad->spread = NSVG_SPREAD_REFLECT;
- else if (strcmp(attr[i + 1], "repeat") == 0)
- grad->spread = NSVG_SPREAD_REPEAT;
- }
- else if (strcmp(attr[i], "xlink:href") == 0) {
- const char *href = attr[i + 1];
- strncpy(grad->ref, href + 1, 62);
- grad->ref[62] = '\0';
- }
- }
- }
-
- grad->next = p->gradients;
- p->gradients = grad;
-}
-
-static void nsvg__parseGradientStop(NSVGparser *p, const char **attr)
-{
- NSVGattrib *curAttr = nsvg__getAttr(p);
- NSVGgradientData *grad;
- NSVGgradientStop *stop;
- int i, idx;
-
- curAttr->stopOffset = 0;
- curAttr->stopColor = 0;
- curAttr->stopOpacity = 1.0f;
-
- for (i = 0; attr[i]; i += 2) {
- nsvg__parseAttr(p, attr[i], attr[i + 1]);
- }
-
- // Add stop to the last gradient.
- grad = p->gradients;
- if (grad == NULL)
- return;
-
- grad->nstops++;
- grad->stops = (NSVGgradientStop *)realloc(grad->stops, sizeof(NSVGgradientStop) * grad->nstops);
- if (grad->stops == NULL)
- return;
-
- // Insert
- idx = grad->nstops - 1;
- for (i = 0; i < grad->nstops - 1; i++) {
- if (curAttr->stopOffset < grad->stops[i].offset) {
- idx = i;
- break;
- }
- }
- if (idx != grad->nstops - 1) {
- for (i = grad->nstops - 1; i > idx; i--)
- grad->stops[i] = grad->stops[i - 1];
- }
-
- stop = &grad->stops[idx];
- stop->color = curAttr->stopColor;
- stop->color |= (unsigned int)(curAttr->stopOpacity * 255) << 24;
- stop->offset = curAttr->stopOffset;
-}
-
-static void nsvg__startElement(void *ud, const char *el, const char **attr)
-{
- NSVGparser *p = (NSVGparser *)ud;
-
- if (p->defsFlag) {
- // Skip everything but gradients in defs
- if (strcmp(el, "linearGradient") == 0) {
- nsvg__parseGradient(p, attr, NSVG_PAINT_LINEAR_GRADIENT);
- }
- else if (strcmp(el, "radialGradient") == 0) {
- nsvg__parseGradient(p, attr, NSVG_PAINT_RADIAL_GRADIENT);
- }
- else if (strcmp(el, "stop") == 0) {
- nsvg__parseGradientStop(p, attr);
- }
- return;
- }
-
- if (strcmp(el, "g") == 0) {
- nsvg__pushAttr(p);
- nsvg__parseAttribs(p, attr);
-
- /* Save the breadcrumb of groups. */
- if (p->breadcrumb_len < NSVG_MAX_BREADCRUMB) {
- NSVGattrib *attr_id = nsvg__getAttr(p);
- memcpy(
- p->breadcrumb[p->breadcrumb_len], attr_id->id, sizeof(p->breadcrumb[p->breadcrumb_len]));
- p->breadcrumb_len++;
- }
- }
- else if (strcmp(el, "path") == 0) {
- if (p->pathFlag) // Do not allow nested paths.
- return;
- nsvg__pushAttr(p);
- nsvg__parsePath(p, attr);
- nsvg__popAttr(p);
- }
- else if (strcmp(el, "rect") == 0) {
- nsvg__pushAttr(p);
- nsvg__parseRect(p, attr);
- nsvg__popAttr(p);
- }
- else if (strcmp(el, "circle") == 0) {
- nsvg__pushAttr(p);
- nsvg__parseCircle(p, attr);
- nsvg__popAttr(p);
- }
- else if (strcmp(el, "ellipse") == 0) {
- nsvg__pushAttr(p);
- nsvg__parseEllipse(p, attr);
- nsvg__popAttr(p);
- }
- else if (strcmp(el, "line") == 0) {
- nsvg__pushAttr(p);
- nsvg__parseLine(p, attr);
- nsvg__popAttr(p);
- }
- else if (strcmp(el, "polyline") == 0) {
- nsvg__pushAttr(p);
- nsvg__parsePoly(p, attr, 0);
- nsvg__popAttr(p);
- }
- else if (strcmp(el, "polygon") == 0) {
- nsvg__pushAttr(p);
- nsvg__parsePoly(p, attr, 1);
- nsvg__popAttr(p);
- }
- else if (strcmp(el, "linearGradient") == 0) {
- nsvg__parseGradient(p, attr, NSVG_PAINT_LINEAR_GRADIENT);
- }
- else if (strcmp(el, "radialGradient") == 0) {
- nsvg__parseGradient(p, attr, NSVG_PAINT_RADIAL_GRADIENT);
- }
- else if (strcmp(el, "stop") == 0) {
- nsvg__parseGradientStop(p, attr);
- }
- else if (strcmp(el, "defs") == 0) {
- p->defsFlag = 1;
- }
- else if (strcmp(el, "svg") == 0) {
- nsvg__parseSVG(p, attr);
- }
-}
-
-static void nsvg__endElement(void *ud, const char *el)
-{
- NSVGparser *p = (NSVGparser *)ud;
-
- if (strcmp(el, "g") == 0) {
- /* Remove the breadcrumb level. */
- if (p->breadcrumb_len > 0) {
- p->breadcrumb[p->breadcrumb_len - 1][0] = '\0';
- p->breadcrumb_len--;
- }
-
- nsvg__popAttr(p);
- }
- else if (strcmp(el, "path") == 0) {
- p->pathFlag = 0;
- }
- else if (strcmp(el, "defs") == 0) {
- p->defsFlag = 0;
- }
-}
-
-static void nsvg__content(void *ud, const char *s)
-{
- NSVG_NOTUSED(ud);
- NSVG_NOTUSED(s);
- // empty
-}
-
-static void nsvg__imageBounds(NSVGparser *p, float *bounds)
-{
- NSVGshape *shape;
- shape = p->image->shapes;
- if (shape == NULL) {
- bounds[0] = bounds[1] = bounds[2] = bounds[3] = 0.0;
- return;
- }
- bounds[0] = shape->bounds[0];
- bounds[1] = shape->bounds[1];
- bounds[2] = shape->bounds[2];
- bounds[3] = shape->bounds[3];
- for (shape = shape->next; shape != NULL; shape = shape->next) {
- bounds[0] = nsvg__minf(bounds[0], shape->bounds[0]);
- bounds[1] = nsvg__minf(bounds[1], shape->bounds[1]);
- bounds[2] = nsvg__maxf(bounds[2], shape->bounds[2]);
- bounds[3] = nsvg__maxf(bounds[3], shape->bounds[3]);
- }
-}
-
-static float nsvg__viewAlign(float content, float container, int type)
-{
- if (type == NSVG_ALIGN_MIN)
- return 0;
- else if (type == NSVG_ALIGN_MAX)
- return container - content;
- // mid
- return (container - content) * 0.5f;
-}
-
-static void nsvg__scaleGradient(NSVGgradient *grad, float tx, float ty, float sx, float sy)
-{
- float t[6];
- nsvg__xformSetTranslation(t, tx, ty);
- nsvg__xformMultiply(grad->xform, t);
-
- nsvg__xformSetScale(t, sx, sy);
- nsvg__xformMultiply(grad->xform, t);
-}
-
-static void nsvg__scaleToViewbox(NSVGparser *p, const char *units)
-{
- NSVGshape *shape;
- NSVGpath *path;
- float tx, ty, sx, sy, us, bounds[4], t[6], avgs;
- int i;
- float *pt;
-
- // Guess image size if not set completely.
- nsvg__imageBounds(p, bounds);
-
- if (p->viewWidth == 0) {
- if (p->image->width > 0) {
- p->viewWidth = p->image->width;
- }
- else {
- p->viewMinx = bounds[0];
- p->viewWidth = bounds[2] - bounds[0];
- }
- }
- if (p->viewHeight == 0) {
- if (p->image->height > 0) {
- p->viewHeight = p->image->height;
- }
- else {
- p->viewMiny = bounds[1];
- p->viewHeight = bounds[3] - bounds[1];
- }
- }
- if (p->image->width == 0)
- p->image->width = p->viewWidth;
- if (p->image->height == 0)
- p->image->height = p->viewHeight;
-
- tx = -p->viewMinx;
- ty = -p->viewMiny;
- sx = p->viewWidth > 0 ? p->image->width / p->viewWidth : 0;
- sy = p->viewHeight > 0 ? p->image->height / p->viewHeight : 0;
- // Unit scaling
- us = 1.0f / nsvg__convertToPixels(p, nsvg__coord(1.0f, nsvg__parseUnits(units)), 0.0f, 1.0f);
-
- // Fix aspect ratio
- if (p->alignType == NSVG_ALIGN_MEET) {
- // fit whole image into viewbox
- sx = sy = nsvg__minf(sx, sy);
- tx += nsvg__viewAlign(p->viewWidth * sx, p->image->width, p->alignX) / sx;
- ty += nsvg__viewAlign(p->viewHeight * sy, p->image->height, p->alignY) / sy;
- }
- else if (p->alignType == NSVG_ALIGN_SLICE) {
- // fill whole viewbox with image
- sx = sy = nsvg__maxf(sx, sy);
- tx += nsvg__viewAlign(p->viewWidth * sx, p->image->width, p->alignX) / sx;
- ty += nsvg__viewAlign(p->viewHeight * sy, p->image->height, p->alignY) / sy;
- }
-
- // Transform
- sx *= us;
- sy *= us;
- avgs = (sx + sy) / 2.0f;
- for (shape = p->image->shapes; shape != NULL; shape = shape->next) {
- shape->bounds[0] = (shape->bounds[0] + tx) * sx;
- shape->bounds[1] = (shape->bounds[1] + ty) * sy;
- shape->bounds[2] = (shape->bounds[2] + tx) * sx;
- shape->bounds[3] = (shape->bounds[3] + ty) * sy;
- for (path = shape->paths; path != NULL; path = path->next) {
- path->bounds[0] = (path->bounds[0] + tx) * sx;
- path->bounds[1] = (path->bounds[1] + ty) * sy;
- path->bounds[2] = (path->bounds[2] + tx) * sx;
- path->bounds[3] = (path->bounds[3] + ty) * sy;
- for (i = 0; i < path->npts; i++) {
- pt = &path->pts[i * 2];
- pt[0] = (pt[0] + tx) * sx;
- pt[1] = (pt[1] + ty) * sy;
- }
- }
-
- if (shape->fill.type == NSVG_PAINT_LINEAR_GRADIENT ||
- shape->fill.type == NSVG_PAINT_RADIAL_GRADIENT) {
- nsvg__scaleGradient(shape->fill.gradient, tx, ty, sx, sy);
- memcpy(t, shape->fill.gradient->xform, sizeof(float) * 6);
- nsvg__xformInverse(shape->fill.gradient->xform, t);
- }
- if (shape->stroke.type == NSVG_PAINT_LINEAR_GRADIENT ||
- shape->stroke.type == NSVG_PAINT_RADIAL_GRADIENT) {
- nsvg__scaleGradient(shape->stroke.gradient, tx, ty, sx, sy);
- memcpy(t, shape->stroke.gradient->xform, sizeof(float) * 6);
- nsvg__xformInverse(shape->stroke.gradient->xform, t);
- }
-
- shape->strokeWidth *= avgs;
- shape->strokeDashOffset *= avgs;
- for (i = 0; i < shape->strokeDashCount; i++)
- shape->strokeDashArray[i] *= avgs;
- }
-}
-
-NSVGimage *nsvgParse(char *input, const char *units, float dpi)
-{
- NSVGparser *p;
- NSVGimage *ret = 0;
-
- p = nsvg__createParser();
- if (p == NULL) {
- return NULL;
- }
- p->dpi = dpi;
-
- nsvg__parseXML(input, nsvg__startElement, nsvg__endElement, nsvg__content, p);
-
- // Scale to viewBox
- nsvg__scaleToViewbox(p, units);
-
- ret = p->image;
- p->image = NULL;
-
- nsvg__deleteParser(p);
-
- return ret;
-}
-
-NSVGimage *nsvgParseFromFile(const char *filename, const char *units, float dpi)
-{
- FILE *fp = NULL;
- size_t size;
- char *data = NULL;
- NSVGimage *image = NULL;
-
- fp = fopen(filename, "rb");
- if (!fp)
- goto error;
- fseek(fp, 0, SEEK_END);
- size = ftell(fp);
- fseek(fp, 0, SEEK_SET);
- data = (char *)malloc(size + 1);
- if (data == NULL)
- goto error;
- if (fread(data, 1, size, fp) != size)
- goto error;
- data[size] = '\0'; // Must be null terminated.
- fclose(fp);
- image = nsvgParse(data, units, dpi);
- free(data);
-
- return image;
-
-error:
- if (fp)
- fclose(fp);
- if (data)
- free(data);
- if (image)
- nsvgDelete(image);
- return NULL;
-}
-
-NSVGpath *nsvgDuplicatePath(NSVGpath *p)
-{
- NSVGpath *res = NULL;
-
- if (p == NULL)
- return NULL;
-
- res = (NSVGpath *)malloc(sizeof(NSVGpath));
- if (res == NULL)
- goto error;
- memset(res, 0, sizeof(NSVGpath));
-
- res->pts = (float *)malloc(p->npts * 2 * sizeof(float));
- if (res->pts == NULL)
- goto error;
- memcpy(res->pts, p->pts, p->npts * sizeof(float) * 2);
- res->npts = p->npts;
-
- memcpy(res->bounds, p->bounds, sizeof(p->bounds));
-
- res->closed = p->closed;
-
- return res;
-
-error:
- if (res != NULL) {
- free(res->pts);
- free(res);
- }
- return NULL;
-}
-
-void nsvgDelete(NSVGimage *image)
-{
- NSVGshape *snext, *shape;
- if (image == NULL)
- return;
- shape = image->shapes;
- while (shape != NULL) {
- snext = shape->next;
- nsvg__deletePaths(shape->paths);
- nsvg__deletePaint(&shape->fill);
- nsvg__deletePaint(&shape->stroke);
- free(shape);
- shape = snext;
- }
- free(image);
-}
-
-#endif