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pandemonium_engine/modules/skeleton_editor/spatial_editor_gizmos.cpp

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/*************************************************************************/
/* spatial_editor_gizmos.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "spatial_editor_gizmos.h"
#include "scene/3d/skeleton.h"
#include "scene/resources/skin.h"
#include "scene/resources/surface_tool.h"
#include "editor/editor_settings.h"
ModuleSkeletonSpatialGizmoPlugin::ModuleSkeletonSpatialGizmoPlugin() {
skeleton_color = EDITOR_DEF("editors/3d_gizmos/gizmo_colors/skeleton", Color(1, 0.8, 0.4));
selected_bone_color = EDITOR_DEF("editors/3d_gizmos/gizmo_colors/selected_bone", Color(1, 0, 0));
bone_axis_length = EDITOR_DEF("editors/3d_gizmos/gizmo_settings/bone_axis_length", (float)0.015);
create_material("skeleton_material", skeleton_color);
selected_mat = Ref<ShaderMaterial>(memnew(ShaderMaterial));
selected_sh = Ref<Shader>(memnew(Shader));
selected_sh->set_code(" \
shader_type spatial; \
render_mode unshaded; \
uniform vec4 albedo : hint_color = vec4(1,1,1,1); \
uniform sampler2D texture_albedo : hint_albedo; \
uniform float point_size : hint_range(0,128) = 32; \
void vertex() { \
if (!OUTPUT_IS_SRGB) { \
COLOR.rgb = mix( pow((COLOR.rgb + vec3(0.055)) * (1.0 / (1.0 + 0.055)), vec3(2.4)), COLOR.rgb* (1.0 / 12.92), lessThan(COLOR.rgb,vec3(0.04045)) ); \
} \
VERTEX = VERTEX; \
POSITION=PROJECTION_MATRIX*INV_CAMERA_MATRIX*WORLD_MATRIX*vec4(VERTEX.xyz,1.0); \
POSITION.z = mix(POSITION.z, -POSITION.w, 0.998); \
} \
void fragment() { \
vec2 base_uv = UV; \
vec4 albedo_tex = texture(texture_albedo,base_uv); \
albedo_tex *= COLOR; \
if (albedo.a * albedo_tex.a < 0.5) { discard; } \
ALBEDO = albedo.rgb * albedo_tex.rgb; \
} \
");
selected_mat->set_shader(selected_sh);
}
bool ModuleSkeletonSpatialGizmoPlugin::has_gizmo(Spatial *p_spatial) {
return Object::cast_to<Skeleton>(p_spatial) != NULL;
}
String ModuleSkeletonSpatialGizmoPlugin::get_name() const {
return "Skeleton";
}
int ModuleSkeletonSpatialGizmoPlugin::get_priority() const {
return -1;
}
void ModuleSkeletonSpatialGizmoPlugin::redraw(EditorSpatialGizmo *p_gizmo) {
Skeleton *skel = Object::cast_to<Skeleton>(p_gizmo->get_spatial_node());
p_gizmo->clear();
Ref<Material> material;
if (p_gizmo->is_selected()) {
material = selected_mat;
} else {
material = get_material("skeleton_material", p_gizmo);
}
Ref<SurfaceTool> surface_tool(memnew(SurfaceTool));
surface_tool->begin(Mesh::PRIMITIVE_LINES);
surface_tool->set_material(material);
Vector<Transform> grests;
grests.resize(skel->get_bone_count());
Vector<int> bones;
Vector<float> weights;
bones.resize(4);
weights.resize(4);
for (int i = 0; i < 4; i++) {
bones.write[i] = 0;
weights.write[i] = 0;
}
weights.write[0] = 1;
Color bone_color;
AABB aabb;
for (int i_bone = 0; i_bone < skel->get_bone_count(); i_bone++) {
int i = skel->get_process_order(i_bone);
if (skel->get_bone_parent(i) == skel->get_selected_bone()) {
bone_color = selected_bone_color;
} else {
bone_color = skeleton_color;
}
int parent = skel->get_bone_parent(i);
if (parent >= 0) {
grests.write[i] = grests[parent] * skel->get_bone_rest(i);
Vector3 v0 = grests[parent].origin;
Vector3 v1 = grests[i].origin;
Vector3 d = (v1 - v0).normalized();
float dist = v0.distance_to(v1);
//find closest axis
int closest = -1;
float closest_d = 0.0;
for (int j = 0; j < 3; j++) {
float dp = Math::abs(grests[parent].basis[j].normalized().dot(d));
if (j == 0 || dp > closest_d)
closest = j;
}
//find closest other
Vector3 first;
Vector3 points[4];
int pointidx = 0;
Color axis_color[3];
axis_color[0] = Color(1, 0, 0);
axis_color[1] = Color(0, 1, 0);
axis_color[2] = Color(0, 0, 1);
for (int j = 0; j < 3; j++) {
if (p_gizmo->is_selected()) {
bones.write[0] = i;
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(axis_color[j]);
surface_tool->add_vertex(v1);
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(axis_color[j]);
surface_tool->add_vertex(v1 + (grests[i].basis.inverse())[j].normalized() * bone_axis_length);
} else {
bones.write[0] = i;
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(axis_color[j]);
surface_tool->add_vertex(v1 - (grests[i].basis.inverse())[j].normalized() * bone_axis_length * 0.5);
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(axis_color[j]);
surface_tool->add_vertex(v1 + (grests[i].basis.inverse())[j].normalized() * bone_axis_length * 0.5);
}
if (j == closest)
continue;
Vector3 axis;
if (first == Vector3()) {
axis = d.cross(d.cross(grests[parent].basis[j])).normalized();
first = axis;
} else {
axis = d.cross(first).normalized();
}
for (int k = 0; k < 2; k++) {
if (k == 1)
axis = -axis;
Vector3 point = v0 + d * dist * 0.2;
point += axis * dist * 0.1;
bones.write[0] = parent;
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(bone_color);
surface_tool->add_vertex(v0);
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(bone_color);
surface_tool->add_vertex(point);
bones.write[0] = parent;
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(bone_color);
surface_tool->add_vertex(point);
bones.write[0] = i;
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(bone_color);
surface_tool->add_vertex(v1);
points[pointidx++] = point;
}
}
SWAP(points[1], points[2]);
for (int j = 0; j < 4; j++) {
bones.write[0] = parent;
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(bone_color);
surface_tool->add_vertex(points[j]);
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(bone_color);
surface_tool->add_vertex(points[(j + 1) % 4]);
}
/*
bones[0]=parent;
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(Color(0.4,1,0.4,0.4));
surface_tool->add_vertex(v0);
bones[0]=i;
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(Color(0.4,1,0.4,0.4));
surface_tool->add_vertex(v1);
*/
} else {
grests.write[i] = skel->get_bone_rest(i);
bones.write[0] = i;
Vector3 v1 = grests[i].origin;
Color axis_color[3];
axis_color[0] = Color(1, 0, 0);
axis_color[1] = Color(0, 1, 0);
axis_color[2] = Color(0, 0, 1);
for (int j = 0; j < 3; j++) {
if (p_gizmo->is_selected()) {
bones.write[0] = i;
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(axis_color[j]);
surface_tool->add_vertex(v1);
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(axis_color[j]);
surface_tool->add_vertex(v1 + (grests[i].basis.inverse())[j].normalized() * bone_axis_length);
} else {
bones.write[0] = i;
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(axis_color[j]);
surface_tool->add_vertex(v1 - (grests[i].basis.inverse())[j].normalized() * bone_axis_length * 0.5);
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(axis_color[j]);
surface_tool->add_vertex(v1 + (grests[i].basis.inverse())[j].normalized() * bone_axis_length * 0.5);
}
}
}
/*
Transform t = grests[i];
t.orthonormalize();
for (int i=0;i<6;i++) {
Vector3 face_points[4];
for (int j=0;j<4;j++) {
float v[3];
v[0]=1.0;
v[1]=1-2*((j>>1)&1);
v[2]=v[1]*(1-2*(j&1));
for (int k=0;k<3;k++) {
if (i<3)
face_points[j][(i+k)%3]=v[k]*(i>=3?-1:1);
else
face_points[3-j][(i+k)%3]=v[k]*(i>=3?-1:1);
}
}
for(int j=0;j<4;j++) {
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(Color(1.0,0.4,0.4,0.4));
surface_tool->add_vertex(t.xform(face_points[j]*0.04));
surface_tool->add_bones(bones);
surface_tool->add_weights(weights);
surface_tool->add_color(Color(1.0,0.4,0.4,0.4));
surface_tool->add_vertex(t.xform(face_points[(j+1)%4]*0.04));
}
}
*/
}
Ref<ArrayMesh> m = surface_tool->commit();
p_gizmo->add_mesh(m, false, skel->register_skin(Ref<Skin>()));
}
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