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/*
* 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.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*/
/** \file
* \ingroup edanimation
*/
/* This file contains code for presenting F-Curves and other animation data
* in the UI (especially for use in the Animation Editors).
*
* -- Joshua Leung, Dec 2008
*/
#include "MEM_guardedalloc.h"
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_utildefines.h"
#include "BLT_translation.h"
#include "DNA_anim_types.h"
#include "RNA_access.h"
#include "ED_anim_api.h"
/* ----------------------- Getter functions ----------------------- */
/**
* Write into "name" buffer, the name of the property
* (retrieved using RNA from the curve's settings),
* and return the icon used for the struct that this property refers to
*
* \warning name buffer we're writing to cannot exceed 256 chars
* (check anim_channels_defines.c for details).
*/
int getname_anim_fcurve(char *name, ID *id, FCurve *fcu)
{
int icon = 0;
/* sanity checks */
if (name == NULL) {
return icon;
}
else if (ELEM(NULL, id, fcu, fcu->rna_path)) {
if (fcu == NULL) {
strcpy(name, TIP_("<invalid>"));
}
else if (fcu->rna_path == NULL) {
strcpy(name, TIP_("<no path>"));
}
else { /* id == NULL */
BLI_snprintf(name, 256, "%s[%d]", fcu->rna_path, fcu->array_index);
}
}
else {
PointerRNA id_ptr, ptr;
PropertyRNA *prop;
/* get RNA pointer, and resolve the path */
RNA_id_pointer_create(id, &id_ptr);
/* try to resolve the path */
if (RNA_path_resolve_property(&id_ptr, fcu->rna_path, &ptr, &prop)) {
const char *structname = NULL, *propname = NULL;
char arrayindbuf[16];
const char *arrayname = NULL;
short free_structname = 0;
/* For now, name will consist of 3 parts: struct-name, property name, array index
* There are several options possible:
* 1) <struct-name>.<property-name>.<array-index>
* i.e. Bone1.Location.X, or Object.Location.X
* 2) <array-index> <property-name> (<struct name>)
* i.e. X Location (Bone1), or X Location (Object)
*
* Currently, option 2 is in use, to try and make it easier to quickly identify F-Curves
* (it does have problems with looking rather odd though).
* Option 1 is better in terms of revealing a consistent sense of hierarchy though,
* which isn't so clear with option 2.
*/
/* For structname:
* - As base, we use a custom name from the structs if one is available
* - However, if we're showing subdata of bones
* (probably there will be other exceptions later).
* need to include that info too since it gets confusing otherwise.
* - If a pointer just refers to the ID-block, then don't repeat this info
* since this just introduces clutter.
*/
if (strstr(fcu->rna_path, "bones") && strstr(fcu->rna_path, "constraints")) {
/* perform string 'chopping' to get "Bone Name : Constraint Name" */
char *pchanName = BLI_str_quoted_substrN(fcu->rna_path, "bones[");
char *constName = BLI_str_quoted_substrN(fcu->rna_path, "constraints[");
/* assemble the string to display in the UI... */
structname = BLI_sprintfN("%s : %s", pchanName, constName);
free_structname = 1;
/* free the temp names */
if (pchanName) {
MEM_freeN(pchanName);
}
if (constName) {
MEM_freeN(constName);
}
}
else if (ptr.data != ptr.owner_id) {
PropertyRNA *nameprop = RNA_struct_name_property(ptr.type);
if (nameprop) {
/* this gets a string which will need to be freed */
structname = RNA_property_string_get_alloc(&ptr, nameprop, NULL, 0, NULL);
free_structname = 1;
}
else {
structname = RNA_struct_ui_name(ptr.type);
}
}
/* Property Name is straightforward */
propname = RNA_property_ui_name(prop);
/* Array Index - only if applicable */
if (RNA_property_array_check(prop)) {
char c = RNA_property_array_item_char(prop, fcu->array_index);
/* we need to write the index to a temp buffer (in py syntax) */
if (c) {
BLI_snprintf(arrayindbuf, sizeof(arrayindbuf), "%c ", c);
}
else {
BLI_snprintf(arrayindbuf, sizeof(arrayindbuf), "[%d]", fcu->array_index);
}
arrayname = &arrayindbuf[0];
}
else {
/* no array index */
arrayname = "";
}
/* putting this all together into the buffer */
/* XXX we need to check for invalid names...
* XXX the name length limit needs to be passed in or as some define */
if (structname) {
BLI_snprintf(name, 256, "%s%s (%s)", arrayname, propname, structname);
}
else {
BLI_snprintf(name, 256, "%s%s", arrayname, propname);
}
/* free temp name if nameprop is set */
if (free_structname) {
MEM_freeN((void *)structname);
}
/* Icon for this property's owner:
* use the struct's icon if it is set
*/
icon = RNA_struct_ui_icon(ptr.type);
/* valid path - remove the invalid tag since we now know how to use it saving
* users manual effort to re-enable using "Revive Disabled FCurves" T29629. */
fcu->flag &= ~FCURVE_DISABLED;
}
else {
/* invalid path */
BLI_snprintf(name, 256, "\"%s[%d]\"", fcu->rna_path, fcu->array_index);
/* icon for this should be the icon for the base ID */
/* TODO: or should we just use the error icon? */
icon = RNA_struct_ui_icon(id_ptr.type);
/* tag F-Curve as disabled - as not usable path */
fcu->flag |= FCURVE_DISABLED;
}
}
/* return the icon that the active data had */
return icon;
}
/* ------------------------------- Color Codes for F-Curve Channels ---------------------------- */
/* step between the major distinguishable color bands of the primary colors */
#define HSV_BANDWIDTH 0.3f
/* used to determine the color of F-Curves with FCURVE_COLOR_AUTO_RAINBOW set */
// void fcurve_rainbow(unsigned int cur, unsigned int tot, float *out)
void getcolor_fcurve_rainbow(int cur, int tot, float out[3])
{
float hsv[3], fac;
int grouping;
/* we try to divide the color into groupings of n colors,
* where n is:
* 3 - for 'odd' numbers of curves - there should be a majority of triplets of curves
* 4 - for 'even' numbers of curves - there should be a majority of quartets of curves
* so the base color is simply one of the three primary colors
*/
grouping = (4 - (tot % 2));
hsv[0] = HSV_BANDWIDTH * (float)(cur % grouping);
/* 'Value' (i.e. darkness) needs to vary so that larger sets of three will be
* 'darker' (i.e. smaller value), so that they don't look that similar to previous ones.
* However, only a range of 0.3 to 1.0 is really usable to avoid clashing
* with some other stuff
*/
fac = ((float)cur / (float)tot) * 0.7f;
/* the base color can get offset a bit so that the colors aren't so identical */
hsv[0] += fac * HSV_BANDWIDTH;
if (hsv[0] > 1.0f) {
hsv[0] = fmod(hsv[0], 1.0f);
}
/* saturation adjustments for more visible range */
hsv[1] = ((hsv[0] > 0.5f) && (hsv[0] < 0.8f)) ? 0.5f : 0.6f;
/* value is fixed at 1.0f, otherwise we cannot clearly see the curves... */
hsv[2] = 1.0f;
/* finally, convert this to RGB colors */
hsv_to_rgb_v(hsv, out);
}
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