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|
/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/freestyle/intern/blender_interface/FRS_freestyle.cpp
* \ingroup freestyle
*/
#include <iostream>
#include <map>
#include <set>
#include "../application/AppCanvas.h"
#include "../application/AppConfig.h"
#include "../application/AppView.h"
#include "../application/Controller.h"
using namespace std;
using namespace Freestyle;
extern "C" {
#include "MEM_guardedalloc.h"
#include "DNA_camera_types.h"
#include "DNA_freestyle_types.h"
#include "DNA_group_types.h"
#include "DNA_text_types.h"
#include "BKE_freestyle.h"
#include "BKE_global.h"
#include "BKE_library.h"
#include "BKE_linestyle.h"
#include "BKE_main.h"
#include "BKE_text.h"
#include "BKE_context.h"
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_callbacks.h"
#include "BPY_extern.h"
#include "renderpipeline.h"
#include "pixelblending.h"
#include "FRS_freestyle.h"
#define DEFAULT_SPHERE_RADIUS 1.0f
#define DEFAULT_DKR_EPSILON 0.0f
// Freestyle configuration
static short freestyle_is_initialized = 0;
static Config::Path *pathconfig = NULL;
static Controller *controller = NULL;
static AppView *view = NULL;
// line set buffer for copy & paste
static FreestyleLineSet lineset_buffer;
static bool lineset_copied = false;
// camera information
float freestyle_viewpoint[3];
float freestyle_mv[4][4];
float freestyle_proj[4][4];
int freestyle_viewport[4];
// current scene
Scene *freestyle_scene;
static string default_module_path;
static void load_post_callback(struct Main *main, struct ID *id, void *arg)
{
lineset_copied = false;
}
static bCallbackFuncStore load_post_callback_funcstore = {
NULL, NULL, /* next, prev */
load_post_callback, /* func */
NULL, /* arg */
0 /* alloc */
};
//=======================================================
// Initialization
//=======================================================
void FRS_initialize()
{
if (freestyle_is_initialized)
return;
pathconfig = new Config::Path;
controller = new Controller();
view = new AppView;
controller->setView(view);
controller->Clear();
freestyle_scene = NULL;
lineset_copied = false;
default_module_path = pathconfig->getProjectDir() + Config::DIR_SEP + "style_modules" +
Config::DIR_SEP + "contour.py";
BLI_callback_add(&load_post_callback_funcstore, BLI_CB_EVT_LOAD_POST);
freestyle_is_initialized = 1;
}
void FRS_set_context(bContext *C)
{
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "FRS_set_context: context 0x" << C << " scene 0x" << CTX_data_scene(C) << endl;
}
controller->setContext(C);
}
void FRS_exit()
{
delete pathconfig;
delete controller;
delete view;
}
//=======================================================
// Rendering
//=======================================================
static void init_view(Render *re)
{
int width = re->winx;
int height = re->winy;
int xmin = re->disprect.xmin;
int ymin = re->disprect.ymin;
int xmax = re->disprect.xmax;
int ymax = re->disprect.ymax;
float thickness = 1.0f;
switch (re->r.line_thickness_mode) {
case R_LINE_THICKNESS_ABSOLUTE:
thickness = re->r.unit_line_thickness * (re->r.size / 100.f);
break;
case R_LINE_THICKNESS_RELATIVE:
thickness = height / 480.f;
break;
}
freestyle_viewport[0] = freestyle_viewport[1] = 0;
freestyle_viewport[2] = width;
freestyle_viewport[3] = height;
view->setWidth(width);
view->setHeight(height);
view->setBorder(xmin, ymin, xmax, ymax);
view->setThickness(thickness);
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "\n=== Dimensions of the 2D image coordinate system ===" << endl;
cout << "Width : " << width << endl;
cout << "Height : " << height << endl;
if (re->r.mode & R_BORDER)
cout << "Border : (" << xmin << ", " << ymin << ") - (" << xmax << ", " << ymax << ")" << endl;
cout << "Unit line thickness : " << thickness << " pixel(s)" << endl;
}
}
static void init_camera(Render *re)
{
// It is assumed that imported meshes are in the camera coordinate system.
// Therefore, the view point (i.e., camera position) is at the origin, and
// the the model-view matrix is simply the identity matrix.
freestyle_viewpoint[0] = 0.0;
freestyle_viewpoint[1] = 0.0;
freestyle_viewpoint[2] = 0.0;
unit_m4(freestyle_mv);
copy_m4_m4(freestyle_proj, re->winmat);
#if 0
print_m4("mv", freestyle_mv);
print_m4("proj", freestyle_proj);
#endif
}
static char *escape_quotes(char *name)
{
char *s = (char *)MEM_mallocN(strlen(name) * 2 + 1, "escape_quotes");
char *p = s;
while (*name) {
if (*name == '\'')
*(p++) = '\\';
*(p++) = *(name++);
}
*p = '\0';
return s;
}
static Text *create_lineset_handler(Main *bmain, char *layer_name, char *lineset_name)
{
char *s1 = escape_quotes(layer_name);
char *s2 = escape_quotes(lineset_name);
Text *text = BKE_text_add(bmain, lineset_name);
BKE_text_write(text, "import parameter_editor; parameter_editor.process('");
BKE_text_write(text, s1);
BKE_text_write(text, "', '");
BKE_text_write(text, s2);
BKE_text_write(text, "')\n");
MEM_freeN(s1);
MEM_freeN(s2);
return text;
}
struct edge_type_condition
{
int edge_type, value;
};
// examines the conditions and returns true if the target edge type needs to be computed
static bool test_edge_type_conditions(struct edge_type_condition *conditions,
int num_edge_types, bool logical_and, int target, bool distinct)
{
int target_condition = 0;
int num_non_target_positive_conditions = 0;
int num_non_target_negative_conditions = 0;
for (int i = 0; i < num_edge_types; i++) {
if (conditions[i].edge_type == target)
target_condition = conditions[i].value;
else if (conditions[i].value > 0)
++num_non_target_positive_conditions;
else if (conditions[i].value < 0)
++num_non_target_negative_conditions;
}
if (distinct) {
// In this case, the 'target' edge type is assumed to appear on distinct edge
// of its own and never together with other edge types.
if (logical_and) {
if (num_non_target_positive_conditions > 0)
return false;
if (target_condition > 0)
return true;
if (target_condition < 0)
return false;
if (num_non_target_negative_conditions > 0)
return true;
}
else {
if (target_condition > 0)
return true;
if (num_non_target_negative_conditions > 0)
return true;
if (target_condition < 0)
return false;
if (num_non_target_positive_conditions > 0)
return false;
}
}
else {
// In this case, the 'target' edge type may appear together with other edge types.
if (target_condition > 0)
return true;
if (target_condition < 0)
return true;
if (logical_and) {
if (num_non_target_positive_conditions > 0)
return false;
if (num_non_target_negative_conditions > 0)
return true;
}
else {
if (num_non_target_negative_conditions > 0)
return true;
if (num_non_target_positive_conditions > 0)
return false;
}
}
return true;
}
static void prepare(Main *bmain, Render *re, SceneRenderLayer *srl)
{
// load mesh
re->i.infostr = "Freestyle: Mesh loading";
re->stats_draw(re->sdh, &re->i);
re->i.infostr = NULL;
if (controller->LoadMesh(re, srl)) // returns if scene cannot be loaded or if empty
return;
if (re->test_break(re->tbh))
return;
// add style modules
FreestyleConfig *config = &srl->freestyleConfig;
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "\n=== Rendering options ===" << endl;
}
int layer_count = 0;
switch (config->mode) {
case FREESTYLE_CONTROL_SCRIPT_MODE:
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "Modules :" << endl;
}
for (FreestyleModuleConfig *module_conf = (FreestyleModuleConfig *)config->modules.first;
module_conf;
module_conf = module_conf->next)
{
if (module_conf->script && module_conf->is_displayed) {
const char *id_name = module_conf->script->id.name + 2;
if (G.debug & G_DEBUG_FREESTYLE) {
cout << " " << layer_count + 1 << ": " << id_name;
if (module_conf->script->name)
cout << " (" << module_conf->script->name << ")";
cout << endl;
}
controller->InsertStyleModule(layer_count, id_name, module_conf->script);
controller->toggleLayer(layer_count, true);
layer_count++;
}
}
if (G.debug & G_DEBUG_FREESTYLE) {
cout << endl;
}
controller->setComputeRidgesAndValleysFlag((config->flags & FREESTYLE_RIDGES_AND_VALLEYS_FLAG) ? true : false);
controller->setComputeSuggestiveContoursFlag((config->flags & FREESTYLE_SUGGESTIVE_CONTOURS_FLAG) ? true : false);
controller->setComputeMaterialBoundariesFlag((config->flags & FREESTYLE_MATERIAL_BOUNDARIES_FLAG) ? true : false);
break;
case FREESTYLE_CONTROL_EDITOR_MODE:
int use_ridges_and_valleys = 0;
int use_suggestive_contours = 0;
int use_material_boundaries = 0;
struct edge_type_condition conditions[] = {
{FREESTYLE_FE_SILHOUETTE, 0},
{FREESTYLE_FE_BORDER, 0},
{FREESTYLE_FE_CREASE, 0},
{FREESTYLE_FE_RIDGE_VALLEY, 0},
{FREESTYLE_FE_SUGGESTIVE_CONTOUR, 0},
{FREESTYLE_FE_MATERIAL_BOUNDARY, 0},
{FREESTYLE_FE_CONTOUR, 0},
{FREESTYLE_FE_EXTERNAL_CONTOUR, 0},
{FREESTYLE_FE_EDGE_MARK, 0}
};
int num_edge_types = sizeof(conditions) / sizeof(struct edge_type_condition);
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "Linesets:" << endl;
}
for (FreestyleLineSet *lineset = (FreestyleLineSet *)config->linesets.first;
lineset;
lineset = lineset->next)
{
if (lineset->flags & FREESTYLE_LINESET_ENABLED) {
if (G.debug & G_DEBUG_FREESTYLE) {
cout << " " << layer_count+1 << ": " << lineset->name << " - " <<
lineset->linestyle->id.name + 2 << endl;
}
Text *text = create_lineset_handler(bmain, srl->name, lineset->name);
controller->InsertStyleModule(layer_count, lineset->name, text);
controller->toggleLayer(layer_count, true);
if (!(lineset->selection & FREESTYLE_SEL_EDGE_TYPES) || !lineset->edge_types) {
++use_ridges_and_valleys;
++use_suggestive_contours;
++use_material_boundaries;
}
else {
// conditions for feature edge selection by edge types
for (int i = 0; i < num_edge_types; i++) {
if (!(lineset->edge_types & conditions[i].edge_type))
conditions[i].value = 0; // no condition specified
else if (!(lineset->exclude_edge_types & conditions[i].edge_type))
conditions[i].value = 1; // condition: X
else
conditions[i].value = -1; // condition: NOT X
}
// logical operator for the selection conditions
bool logical_and = ((lineset->flags & FREESTYLE_LINESET_FE_AND) != 0);
// negation operator
if (lineset->flags & FREESTYLE_LINESET_FE_NOT) {
// convert an Exclusive condition into an Inclusive equivalent using De Morgan's laws:
// NOT (X OR Y) --> (NOT X) AND (NOT Y)
// NOT (X AND Y) --> (NOT X) OR (NOT Y)
for (int i = 0; i < num_edge_types; i++)
conditions[i].value *= -1;
logical_and = !logical_and;
}
if (test_edge_type_conditions(conditions, num_edge_types, logical_and,
FREESTYLE_FE_RIDGE_VALLEY, true))
{
++use_ridges_and_valleys;
}
if (test_edge_type_conditions(conditions, num_edge_types, logical_and,
FREESTYLE_FE_SUGGESTIVE_CONTOUR, true))
{
++use_suggestive_contours;
}
if (test_edge_type_conditions(conditions, num_edge_types, logical_and,
FREESTYLE_FE_MATERIAL_BOUNDARY, true))
{
++use_material_boundaries;
}
}
layer_count++;
}
}
controller->setComputeRidgesAndValleysFlag(use_ridges_and_valleys > 0);
controller->setComputeSuggestiveContoursFlag(use_suggestive_contours > 0);
controller->setComputeMaterialBoundariesFlag(use_material_boundaries > 0);
break;
}
// set parameters
if (config->flags & FREESTYLE_ADVANCED_OPTIONS_FLAG) {
controller->setSphereRadius(config->sphere_radius);
controller->setSuggestiveContourKrDerivativeEpsilon(config->dkr_epsilon);
}
else {
controller->setSphereRadius(DEFAULT_SPHERE_RADIUS);
controller->setSuggestiveContourKrDerivativeEpsilon(DEFAULT_DKR_EPSILON);
}
controller->setFaceSmoothness((config->flags & FREESTYLE_FACE_SMOOTHNESS_FLAG) ? true : false);
controller->setCreaseAngle(RAD2DEGF(config->crease_angle));
controller->setVisibilityAlgo((config->flags & FREESTYLE_CULLING) ?
FREESTYLE_ALGO_CULLED_ADAPTIVE_CUMULATIVE :
FREESTYLE_ALGO_ADAPTIVE_CUMULATIVE);
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "Crease angle : " << controller->getCreaseAngle() << endl;
cout << "Sphere radius : " << controller->getSphereRadius() << endl;
cout << "Face smoothness : " << (controller->getFaceSmoothness() ? "enabled" : "disabled") << endl;
cout << "Redges and valleys : " << (controller->getComputeRidgesAndValleysFlag() ? "enabled" : "disabled") <<
endl;
cout << "Suggestive contours : " <<
(controller->getComputeSuggestiveContoursFlag() ? "enabled" : "disabled") << endl;
cout << "Suggestive contour Kr derivative epsilon : " <<
controller->getSuggestiveContourKrDerivativeEpsilon() << endl;
cout << "Material boundaries : " <<
(controller->getComputeMaterialBoundariesFlag() ? "enabled" : "disabled") << endl;
cout << endl;
}
// set diffuse and z depth passes
RenderLayer *rl = RE_GetRenderLayer(re->result, srl->name);
bool diffuse = false, z = false;
for (RenderPass *rpass = (RenderPass *)rl->passes.first; rpass; rpass = rpass->next) {
switch (rpass->passtype) {
case SCE_PASS_DIFFUSE:
controller->setPassDiffuse(rpass->rect, rpass->rectx, rpass->recty);
diffuse = true;
break;
case SCE_PASS_Z:
controller->setPassZ(rpass->rect, rpass->rectx, rpass->recty);
z = true;
break;
}
}
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "Passes :" << endl;
cout << " Diffuse = " << (diffuse ? "enabled" : "disabled") << endl;
cout << " Z = " << (z ? "enabled" : "disabled") << endl;
}
// compute view map
re->i.infostr = "Freestyle: View map creation";
re->stats_draw(re->sdh, &re->i);
re->i.infostr = NULL;
controller->ComputeViewMap();
}
void FRS_composite_result(Render *re, SceneRenderLayer *srl, Render *freestyle_render)
{
RenderLayer *rl;
float *src, *dest, *pixSrc, *pixDest;
int x, y, rectx, recty;
if (freestyle_render == NULL || freestyle_render->result == NULL)
return;
rl = render_get_active_layer( freestyle_render, freestyle_render->result );
if (!rl || rl->rectf == NULL) {
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "Cannot find Freestyle result image" << endl;
}
return;
}
src = rl->rectf;
#if 0
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "src: " << rl->rectx << " x " << rl->recty << endl;
}
#endif
rl = RE_GetRenderLayer(re->result, srl->name);
if (!rl || rl->rectf == NULL) {
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "No layer to composite to" << endl;
}
return;
}
dest = rl->rectf;
#if 0
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "dest: " << rl->rectx << " x " << rl->recty << endl;
}
#endif
rectx = re->rectx;
recty = re->recty;
for (y = 0; y < recty; y++) {
for (x = 0; x < rectx; x++) {
pixSrc = src + 4 * (rectx * y + x);
if (pixSrc[3] > 0.0) {
pixDest = dest + 4 * (rectx * y + x);
addAlphaOverFloat(pixDest, pixSrc);
}
}
}
}
static int displayed_layer_count(SceneRenderLayer *srl)
{
int count = 0;
switch (srl->freestyleConfig.mode) {
case FREESTYLE_CONTROL_SCRIPT_MODE:
for (FreestyleModuleConfig *module = (FreestyleModuleConfig *)srl->freestyleConfig.modules.first;
module;
module = module->next)
{
if (module->script && module->is_displayed)
count++;
}
break;
case FREESTYLE_CONTROL_EDITOR_MODE:
for (FreestyleLineSet *lineset = (FreestyleLineSet *)srl->freestyleConfig.linesets.first;
lineset;
lineset = lineset->next)
{
if (lineset->flags & FREESTYLE_LINESET_ENABLED)
count++;
}
break;
}
return count;
}
int FRS_is_freestyle_enabled(SceneRenderLayer *srl)
{
return (!(srl->layflag & SCE_LAY_DISABLE) && srl->layflag & SCE_LAY_FRS && displayed_layer_count(srl) > 0);
}
void FRS_init_stroke_rendering(Render *re)
{
if (G.debug & G_DEBUG_FREESTYLE) {
cout << endl;
cout << "#===============================================================" << endl;
cout << "# Freestyle" << endl;
cout << "#===============================================================" << endl;
}
init_view(re);
init_camera(re);
controller->ResetRenderCount();
}
Render *FRS_do_stroke_rendering(Render *re, SceneRenderLayer *srl, int render)
{
Main bmain = {0};
Render *freestyle_render = NULL;
Text *text, *next_text;
if (!render)
return controller->RenderStrokes(re, false);
RenderMonitor monitor(re);
controller->setRenderMonitor(&monitor);
if (G.debug & G_DEBUG_FREESTYLE) {
cout << endl;
cout << "----------------------------------------------------------" << endl;
cout << "| " << (re->scene->id.name + 2) << "|" << srl->name << endl;
cout << "----------------------------------------------------------" << endl;
}
// prepare Freestyle:
// - load mesh
// - add style modules
// - set parameters
// - compute view map
prepare(&bmain, re, srl);
if (re->test_break(re->tbh)) {
controller->CloseFile();
if (G.debug & G_DEBUG_FREESTYLE) {
cout << "Break" << endl;
}
return NULL;
}
// render and composite Freestyle result
if (controller->_ViewMap) {
// render strokes
re->i.infostr = "Freestyle: Stroke rendering";
re->stats_draw(re->sdh, &re->i);
re->i.infostr = NULL;
freestyle_scene = re->scene;
controller->DrawStrokes();
freestyle_render = controller->RenderStrokes(re, true);
controller->CloseFile();
freestyle_scene = NULL;
// composite result
FRS_composite_result(re, srl, freestyle_render);
RE_FreeRenderResult(freestyle_render->result);
freestyle_render->result = NULL;
}
// Free temp main (currently only text blocks are stored there)
for (text = (Text *) bmain.text.first; text; text = next_text) {
next_text = (Text *) text->id.next;
BKE_text_unlink(&bmain, text);
BKE_libblock_free(&bmain.text, text);
}
return freestyle_render;
}
void FRS_finish_stroke_rendering(Render *re)
{
// clear canvas
controller->Clear();
}
//=======================================================
// Freestyle Panel Configuration
//=======================================================
void FRS_copy_active_lineset(FreestyleConfig *config)
{
FreestyleLineSet *lineset = BKE_freestyle_lineset_get_active(config);
if (lineset) {
lineset_buffer.linestyle = lineset->linestyle;
lineset_buffer.flags = lineset->flags;
lineset_buffer.selection = lineset->selection;
lineset_buffer.qi = lineset->qi;
lineset_buffer.qi_start = lineset->qi_start;
lineset_buffer.qi_end = lineset->qi_end;
lineset_buffer.edge_types = lineset->edge_types;
lineset_buffer.exclude_edge_types = lineset->exclude_edge_types;
lineset_buffer.group = lineset->group;
strcpy(lineset_buffer.name, lineset->name);
lineset_copied = true;
}
}
void FRS_paste_active_lineset(FreestyleConfig *config)
{
if (!lineset_copied)
return;
FreestyleLineSet *lineset = BKE_freestyle_lineset_get_active(config);
if (lineset) {
lineset->linestyle->id.us--;
lineset->linestyle = lineset_buffer.linestyle;
lineset->linestyle->id.us++;
lineset->flags = lineset_buffer.flags;
lineset->selection = lineset_buffer.selection;
lineset->qi = lineset_buffer.qi;
lineset->qi_start = lineset_buffer.qi_start;
lineset->qi_end = lineset_buffer.qi_end;
lineset->edge_types = lineset_buffer.edge_types;
lineset->exclude_edge_types = lineset_buffer.exclude_edge_types;
if (lineset->group) {
lineset->group->id.us--;
lineset->group = NULL;
}
if (lineset_buffer.group) {
lineset->group = lineset_buffer.group;
lineset->group->id.us++;
}
strcpy(lineset->name, lineset_buffer.name);
BKE_freestyle_lineset_unique_name(config, lineset);
lineset->flags |= FREESTYLE_LINESET_CURRENT;
}
}
void FRS_delete_active_lineset(FreestyleConfig *config)
{
FreestyleLineSet *lineset = BKE_freestyle_lineset_get_active(config);
if (lineset) {
if (lineset->group) {
lineset->group->id.us--;
lineset->group = NULL;
}
lineset->linestyle->id.us--;
lineset->linestyle = NULL;
BLI_remlink(&config->linesets, lineset);
MEM_freeN(lineset);
BKE_freestyle_lineset_set_active_index(config, 0);
}
}
void FRS_move_active_lineset_up(FreestyleConfig *config)
{
FreestyleLineSet *lineset = BKE_freestyle_lineset_get_active(config);
if (lineset) {
BLI_remlink(&config->linesets, lineset);
BLI_insertlinkbefore(&config->linesets, lineset->prev, lineset);
}
}
void FRS_move_active_lineset_down(FreestyleConfig *config)
{
FreestyleLineSet *lineset = BKE_freestyle_lineset_get_active(config);
if (lineset) {
BLI_remlink(&config->linesets, lineset);
BLI_insertlinkafter(&config->linesets, lineset->next, lineset);
}
}
} // extern "C"
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