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/*
* Copyright 2016, Blender Foundation.
*
* 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.
*
* Contributor(s): Blender Institute
*
*/
/** \file draw_armature.c
* \ingroup draw
*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "DNA_anim_types.h"
#include "DNA_armature_types.h"
#include "DNA_constraint_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_view3d_types.h"
#include "DNA_object_types.h"
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_dlrbTree.h"
#include "BLI_utildefines.h"
#include "BKE_animsys.h"
#include "BKE_action.h"
#include "BKE_armature.h"
#include "BKE_global.h"
#include "BKE_modifier.h"
#include "BKE_nla.h"
#include "BKE_curve.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
#include "ED_armature.h"
#include "ED_keyframes_draw.h"
#include "UI_resources.h"
#include "draw_mode_pass.h"
#define BONE_VAR(eBone, pchan, var) ((eBone) ? (eBone->var) : (pchan->var))
#define BONE_FLAG(eBone, pchan) ((eBone) ? (eBone->flag) : (pchan->bone->flag))
/* *************** Armature Drawing - Coloring API ***************************** */
static float colorBoneSolid[4];
static float colorTextHi[4];
static float colorText[4];
static float colorVertexSelect[4];
static float colorVertex[4];
static const float *constColor;
static void update_color(const float const_color[4])
{
constColor = const_color;
UI_GetThemeColor4fv(TH_BONE_SOLID, colorBoneSolid);
UI_GetThemeColor4fv(TH_TEXT_HI, colorTextHi);
UI_GetThemeColor4fv(TH_TEXT, colorText);
UI_GetThemeColor4fv(TH_VERTEX_SELECT, colorVertexSelect);
UI_GetThemeColor4fv(TH_VERTEX, colorVertex);
}
static const float *get_bone_solid_color(EditBone *eBone, bPoseChannel *pchan, bArmature *arm)
{
if (constColor)
return colorBoneSolid;
/* Edit Mode */
if (eBone) {
if (eBone->flag & BONE_SELECTED)
return colorVertexSelect;
}
return colorBoneSolid;
}
static const float *get_bone_wire_color(EditBone *eBone, bPoseChannel *pchan, bArmature *arm)
{
if (constColor)
return constColor;
if (eBone) {
if (eBone->flag & BONE_SELECTED)
return colorVertexSelect;
}
return colorVertex;
}
/* *************** Armature drawing, helper calls for parts ******************* */
static void draw_bone_update_disp_matrix(EditBone *eBone, bPoseChannel *pchan, int drawtype)
{
float s[4][4], ebmat[4][4];
float length;
float (*bone_mat)[4];
float (*disp_mat)[4];
float (*disp_tail_mat)[4];
/* TODO : This should be moved to depsgraph or armature refresh
* and not be tight to the draw pass creation.
* This would refresh armature without invalidating the draw cache */
if (pchan) {
length = pchan->bone->length;
bone_mat = pchan->pose_mat;
disp_mat = pchan->disp_mat;
disp_tail_mat = pchan->disp_tail_mat;
}
else {
eBone->length = len_v3v3(eBone->tail, eBone->head);
ED_armature_ebone_to_mat4(eBone, ebmat);
length = eBone->length;
bone_mat = ebmat;
disp_mat = eBone->disp_mat;
disp_tail_mat = eBone->disp_tail_mat;
}
if (pchan && pchan->custom) {
/* TODO */
}
else if (drawtype == ARM_ENVELOPE) {
/* TODO */
}
else if (drawtype == ARM_LINE) {
/* TODO */
}
else if (drawtype == ARM_WIRE) {
/* TODO */
}
else if (drawtype == ARM_B_BONE) {
/* TODO */
}
else {
scale_m4_fl(s, length);
mul_m4_m4m4(disp_mat, bone_mat, s);
copy_m4_m4(disp_tail_mat, disp_mat);
translate_m4(disp_tail_mat, 0.0f, 1.0f, 0.0f);
}
}
static void draw_axes(EditBone *eBone, bPoseChannel *pchan)
{
const float *col = (constColor) ? constColor :
(BONE_FLAG(eBone, pchan) & BONE_SELECTED) ? colorTextHi : colorText;
DRW_shgroup_bone_axes(BONE_VAR(eBone, pchan, disp_tail_mat), col);
}
static void draw_points(EditBone *eBone, bPoseChannel *pchan, bArmature *arm)
{
const float *col_solid_root = colorBoneSolid;
const float *col_solid_tail = colorBoneSolid;
const float *col_wire_root = (constColor) ? constColor : colorVertex;
const float *col_wire_tail = (constColor) ? constColor : colorVertex;
/* Edit bone points can be selected */
if (eBone) {
if (eBone->flag & BONE_ROOTSEL) {
col_solid_root = colorVertexSelect;
col_wire_root = colorVertexSelect;
}
if (eBone->flag & BONE_TIPSEL) {
col_solid_tail = colorVertexSelect;
col_wire_tail = colorVertexSelect;
}
}
/* Draw root point if we are not connected and parent are not hidden */
if ((BONE_FLAG(eBone, pchan) & BONE_CONNECTED) == 0) {
if (eBone) {
if (!((eBone->parent) && !EBONE_VISIBLE(arm, eBone->parent))) {
DRW_shgroup_bone_point_solid(eBone->disp_mat, col_solid_root);
DRW_shgroup_bone_point_wire(eBone->disp_mat, col_wire_root);
}
}
else {
Bone *bone = pchan->bone;
if (!((bone->parent) && (bone->parent->flag & (BONE_HIDDEN_P | BONE_HIDDEN_PG)))) {
DRW_shgroup_bone_point_solid(pchan->disp_mat, col_solid_root);
DRW_shgroup_bone_point_wire(pchan->disp_mat, col_wire_root);
}
}
}
/* Draw tip point */
DRW_shgroup_bone_point_solid(BONE_VAR(eBone, pchan, disp_tail_mat), col_solid_tail);
DRW_shgroup_bone_point_wire(BONE_VAR(eBone, pchan, disp_tail_mat), col_wire_tail);
}
static void draw_bone_custom_shape(EditBone *eBone, bPoseChannel *pchan, bArmature *arm)
{
}
static void draw_bone_envelope(EditBone *eBone, bPoseChannel *pchan, bArmature *arm)
{
}
static void draw_bone_line(EditBone *eBone, bPoseChannel *pchan, bArmature *arm)
{
}
static void draw_bone_wire(EditBone *eBone, bPoseChannel *pchan, bArmature *arm)
{
}
static void draw_bone_box(EditBone *eBone, bPoseChannel *pchan, bArmature *arm)
{
}
static void draw_bone_octahedral(EditBone *eBone, bPoseChannel *pchan, bArmature *arm)
{
const float *col_solid = get_bone_solid_color(eBone, pchan, arm);
const float *col_wire = get_bone_wire_color(eBone, pchan, arm);
DRW_shgroup_bone_octahedral_solid(BONE_VAR(eBone, pchan, disp_mat), col_solid);
DRW_shgroup_bone_octahedral_wire(BONE_VAR(eBone, pchan, disp_mat), col_wire);
draw_points(eBone, pchan, arm);
}
void draw_armature_edit(Object *ob)
{
EditBone *eBone;
bArmature *arm = ob->data;
unsigned int index;
update_color(NULL);
for (eBone = arm->edbo->first, index = 0; eBone; eBone = eBone->next, index++) {
if (eBone->layer & arm->layer) {
if ((eBone->flag & BONE_HIDDEN_A) == 0) {
draw_bone_update_disp_matrix(eBone, NULL, arm->drawtype);
if (arm->drawtype == ARM_ENVELOPE)
draw_bone_envelope(eBone, NULL, arm);
else if (arm->drawtype == ARM_LINE)
draw_bone_line(eBone, NULL, arm);
else if (arm->drawtype == ARM_WIRE)
draw_bone_wire(eBone, NULL, arm);
else if (arm->drawtype == ARM_B_BONE)
draw_bone_box(eBone, NULL, arm);
else
draw_bone_octahedral(eBone, NULL, arm);
/* Draw additional axes */
if (arm->flag & ARM_DRAWAXES)
draw_axes(eBone, NULL);
}
}
}
}
/* if const_color is NULL do pose mode coloring */
void draw_armature_pose(Object *ob, const float const_color[4])
{
bArmature *arm = ob->data;
bPoseChannel *pchan;
Bone *bone;
update_color(const_color);
/* We can't safely draw non-updated pose, might contain NULL bone pointers... */
if (ob->pose->flag & POSE_RECALC) {
BKE_pose_rebuild(ob, arm);
}
/* being set below */
arm->layer_used = 0;
for (pchan = ob->pose->chanbase.first; pchan; pchan = pchan->next) {
bone = pchan->bone;
arm->layer_used |= bone->layer;
/* bone must be visible */
if ((bone->flag & (BONE_HIDDEN_P | BONE_HIDDEN_PG)) == 0) {
if (bone->layer & arm->layer) {
draw_bone_update_disp_matrix(NULL, pchan, arm->drawtype);
if ((pchan->custom) && !(arm->flag & ARM_NO_CUSTOM))
draw_bone_custom_shape(NULL, pchan, arm);
else if (arm->drawtype == ARM_ENVELOPE)
draw_bone_envelope(NULL, pchan, arm);
else if (arm->drawtype == ARM_LINE)
draw_bone_line(NULL, pchan, arm);
else if (arm->drawtype == ARM_WIRE)
draw_bone_wire(NULL, pchan, arm);
else if (arm->drawtype == ARM_B_BONE)
draw_bone_box(NULL, pchan, arm);
else
draw_bone_octahedral(NULL, pchan, arm);
/* Draw additional axes */
if (arm->flag & ARM_DRAWAXES)
draw_axes(NULL, pchan);
}
}
}
}
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