godot/editor/plugins/gpu_particles_3d_editor_plugin.cpp
Rémi Verschelde b5334d14f7
Update copyright statements to 2021
Happy new year to the wonderful Godot community!

2020 has been a tough year for most of us personally, but a good year for
Godot development nonetheless with a huge amount of work done towards Godot
4.0 and great improvements backported to the long-lived 3.2 branch.

We've had close to 400 contributors to engine code this year, authoring near
7,000 commit! (And that's only for the `master` branch and for the engine code,
there's a lot more when counting docs, demos and other first-party repos.)

Here's to a great year 2021 for all Godot users 🎆
2021-01-01 20:19:21 +01:00

464 lines
14 KiB
C++

/*************************************************************************/
/* gpu_particles_3d_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 "gpu_particles_3d_editor_plugin.h"
#include "core/io/resource_loader.h"
#include "editor/plugins/node_3d_editor_plugin.h"
#include "scene/3d/cpu_particles_3d.h"
#include "scene/resources/particles_material.h"
bool GPUParticles3DEditorBase::_generate(Vector<Vector3> &points, Vector<Vector3> &normals) {
bool use_normals = emission_fill->get_selected() == 1;
if (emission_fill->get_selected() < 2) {
float area_accum = 0;
Map<float, int> triangle_area_map;
for (int i = 0; i < geometry.size(); i++) {
float area = geometry[i].get_area();
if (area < CMP_EPSILON) {
continue;
}
triangle_area_map[area_accum] = i;
area_accum += area;
}
if (!triangle_area_map.size() || area_accum == 0) {
EditorNode::get_singleton()->show_warning(TTR("The geometry's faces don't contain any area."));
return false;
}
int emissor_count = emission_amount->get_value();
for (int i = 0; i < emissor_count; i++) {
float areapos = Math::random(0.0f, area_accum);
Map<float, int>::Element *E = triangle_area_map.find_closest(areapos);
ERR_FAIL_COND_V(!E, false);
int index = E->get();
ERR_FAIL_INDEX_V(index, geometry.size(), false);
// ok FINALLY get face
Face3 face = geometry[index];
//now compute some position inside the face...
Vector3 pos = face.get_random_point_inside();
points.push_back(pos);
if (use_normals) {
Vector3 normal = face.get_plane().normal;
normals.push_back(normal);
}
}
} else {
int gcount = geometry.size();
if (gcount == 0) {
EditorNode::get_singleton()->show_warning(TTR("The geometry doesn't contain any faces."));
return false;
}
const Face3 *r = geometry.ptr();
AABB aabb;
for (int i = 0; i < gcount; i++) {
for (int j = 0; j < 3; j++) {
if (i == 0 && j == 0) {
aabb.position = r[i].vertex[j];
} else {
aabb.expand_to(r[i].vertex[j]);
}
}
}
int emissor_count = emission_amount->get_value();
for (int i = 0; i < emissor_count; i++) {
int attempts = 5;
for (int j = 0; j < attempts; j++) {
Vector3 dir;
dir[Math::rand() % 3] = 1.0;
Vector3 ofs = (Vector3(1, 1, 1) - dir) * Vector3(Math::randf(), Math::randf(), Math::randf()) * aabb.size + aabb.position;
Vector3 ofsv = ofs + aabb.size * dir;
//space it a little
ofs -= dir;
ofsv += dir;
float max = -1e7, min = 1e7;
for (int k = 0; k < gcount; k++) {
const Face3 &f3 = r[k];
Vector3 res;
if (f3.intersects_segment(ofs, ofsv, &res)) {
res -= ofs;
float d = dir.dot(res);
if (d < min) {
min = d;
}
if (d > max) {
max = d;
}
}
}
if (max < min) {
continue; //lost attempt
}
float val = min + (max - min) * Math::randf();
Vector3 point = ofs + dir * val;
points.push_back(point);
break;
}
}
}
return true;
}
void GPUParticles3DEditorBase::_node_selected(const NodePath &p_path) {
Node *sel = get_node(p_path);
if (!sel) {
return;
}
if (!sel->is_class("Node3D")) {
EditorNode::get_singleton()->show_warning(vformat(TTR("\"%s\" doesn't inherit from Node3D."), sel->get_name()));
return;
}
VisualInstance3D *vi = Object::cast_to<VisualInstance3D>(sel);
if (!vi) {
EditorNode::get_singleton()->show_warning(vformat(TTR("\"%s\" doesn't contain geometry."), sel->get_name()));
return;
}
geometry = vi->get_faces(VisualInstance3D::FACES_SOLID);
if (geometry.size() == 0) {
EditorNode::get_singleton()->show_warning(vformat(TTR("\"%s\" doesn't contain face geometry."), sel->get_name()));
return;
}
Transform geom_xform = base_node->get_global_transform().affine_inverse() * vi->get_global_transform();
int gc = geometry.size();
Face3 *w = geometry.ptrw();
for (int i = 0; i < gc; i++) {
for (int j = 0; j < 3; j++) {
w[i].vertex[j] = geom_xform.xform(w[i].vertex[j]);
}
}
emission_dialog->popup_centered(Size2(300, 130));
}
void GPUParticles3DEditorBase::_bind_methods() {
}
GPUParticles3DEditorBase::GPUParticles3DEditorBase() {
emission_dialog = memnew(ConfirmationDialog);
emission_dialog->set_title(TTR("Create Emitter"));
add_child(emission_dialog);
VBoxContainer *emd_vb = memnew(VBoxContainer);
emission_dialog->add_child(emd_vb);
emission_amount = memnew(SpinBox);
emission_amount->set_min(1);
emission_amount->set_max(100000);
emission_amount->set_value(512);
emd_vb->add_margin_child(TTR("Emission Points:"), emission_amount);
emission_fill = memnew(OptionButton);
emission_fill->add_item(TTR("Surface Points"));
emission_fill->add_item(TTR("Surface Points+Normal (Directed)"));
emission_fill->add_item(TTR("Volume"));
emd_vb->add_margin_child(TTR("Emission Source: "), emission_fill);
emission_dialog->get_ok_button()->set_text(TTR("Create"));
emission_dialog->connect("confirmed", callable_mp(this, &GPUParticles3DEditorBase::_generate_emission_points));
emission_tree_dialog = memnew(SceneTreeDialog);
add_child(emission_tree_dialog);
emission_tree_dialog->connect("selected", callable_mp(this, &GPUParticles3DEditorBase::_node_selected));
}
void GPUParticles3DEditor::_node_removed(Node *p_node) {
if (p_node == node) {
node = nullptr;
hide();
}
}
void GPUParticles3DEditor::_notification(int p_notification) {
if (p_notification == NOTIFICATION_ENTER_TREE) {
options->set_icon(options->get_popup()->get_theme_icon("GPUParticles3D", "EditorIcons"));
get_tree()->connect("node_removed", callable_mp(this, &GPUParticles3DEditor::_node_removed));
}
}
void GPUParticles3DEditor::_menu_option(int p_option) {
switch (p_option) {
case MENU_OPTION_GENERATE_AABB: {
float gen_time = node->get_lifetime();
if (gen_time < 1.0) {
generate_seconds->set_value(1.0);
} else {
generate_seconds->set_value(trunc(gen_time) + 1.0);
}
generate_aabb->popup_centered();
} break;
case MENU_OPTION_CREATE_EMISSION_VOLUME_FROM_NODE: {
Ref<ParticlesMaterial> material = node->get_process_material();
if (material.is_null()) {
EditorNode::get_singleton()->show_warning(TTR("A processor material of type 'ParticlesMaterial' is required."));
return;
}
emission_tree_dialog->popup_scenetree_dialog();
} break;
case MENU_OPTION_CONVERT_TO_CPU_PARTICLES: {
CPUParticles3D *cpu_particles = memnew(CPUParticles3D);
cpu_particles->convert_from_particles(node);
cpu_particles->set_name(node->get_name());
cpu_particles->set_transform(node->get_transform());
cpu_particles->set_visible(node->is_visible());
cpu_particles->set_pause_mode(node->get_pause_mode());
UndoRedo *ur = EditorNode::get_singleton()->get_undo_redo();
ur->create_action(TTR("Convert to CPUParticles3D"));
ur->add_do_method(EditorNode::get_singleton()->get_scene_tree_dock(), "replace_node", node, cpu_particles, true, false);
ur->add_do_reference(cpu_particles);
ur->add_undo_method(EditorNode::get_singleton()->get_scene_tree_dock(), "replace_node", cpu_particles, node, false, false);
ur->add_undo_reference(node);
ur->commit_action();
} break;
case MENU_OPTION_RESTART: {
node->restart();
} break;
}
}
void GPUParticles3DEditor::_generate_aabb() {
float time = generate_seconds->get_value();
float running = 0.0;
EditorProgress ep("gen_aabb", TTR("Generating AABB"), int(time));
bool was_emitting = node->is_emitting();
if (!was_emitting) {
node->set_emitting(true);
OS::get_singleton()->delay_usec(1000);
}
AABB rect;
while (running < time) {
uint64_t ticks = OS::get_singleton()->get_ticks_usec();
ep.step("Generating...", int(running), true);
OS::get_singleton()->delay_usec(1000);
AABB capture = node->capture_aabb();
if (rect == AABB()) {
rect = capture;
} else {
rect.merge_with(capture);
}
running += (OS::get_singleton()->get_ticks_usec() - ticks) / 1000000.0;
}
if (!was_emitting) {
node->set_emitting(false);
}
UndoRedo *ur = EditorNode::get_singleton()->get_undo_redo();
ur->create_action(TTR("Generate Visibility AABB"));
ur->add_do_method(node, "set_visibility_aabb", rect);
ur->add_undo_method(node, "set_visibility_aabb", node->get_visibility_aabb());
ur->commit_action();
}
void GPUParticles3DEditor::edit(GPUParticles3D *p_particles) {
base_node = p_particles;
node = p_particles;
}
void GPUParticles3DEditor::_generate_emission_points() {
/// hacer codigo aca
Vector<Vector3> points;
Vector<Vector3> normals;
if (!_generate(points, normals)) {
return;
}
int point_count = points.size();
int w = 2048;
int h = (point_count / 2048) + 1;
Vector<uint8_t> point_img;
point_img.resize(w * h * 3 * sizeof(float));
{
uint8_t *iw = point_img.ptrw();
zeromem(iw, w * h * 3 * sizeof(float));
const Vector3 *r = points.ptr();
float *wf = (float *)iw;
for (int i = 0; i < point_count; i++) {
wf[i * 3 + 0] = r[i].x;
wf[i * 3 + 1] = r[i].y;
wf[i * 3 + 2] = r[i].z;
}
}
Ref<Image> image = memnew(Image(w, h, false, Image::FORMAT_RGBF, point_img));
Ref<ImageTexture> tex;
tex.instance();
Ref<ParticlesMaterial> material = node->get_process_material();
ERR_FAIL_COND(material.is_null());
if (normals.size() > 0) {
material->set_emission_shape(ParticlesMaterial::EMISSION_SHAPE_DIRECTED_POINTS);
material->set_emission_point_count(point_count);
material->set_emission_point_texture(tex);
Vector<uint8_t> point_img2;
point_img2.resize(w * h * 3 * sizeof(float));
{
uint8_t *iw = point_img2.ptrw();
zeromem(iw, w * h * 3 * sizeof(float));
const Vector3 *r = normals.ptr();
float *wf = (float *)iw;
for (int i = 0; i < point_count; i++) {
wf[i * 3 + 0] = r[i].x;
wf[i * 3 + 1] = r[i].y;
wf[i * 3 + 2] = r[i].z;
}
}
Ref<Image> image2 = memnew(Image(w, h, false, Image::FORMAT_RGBF, point_img2));
Ref<ImageTexture> tex2;
tex2.instance();
material->set_emission_normal_texture(tex2);
} else {
material->set_emission_shape(ParticlesMaterial::EMISSION_SHAPE_POINTS);
material->set_emission_point_count(point_count);
material->set_emission_point_texture(tex);
}
}
void GPUParticles3DEditor::_bind_methods() {
}
GPUParticles3DEditor::GPUParticles3DEditor() {
node = nullptr;
particles_editor_hb = memnew(HBoxContainer);
Node3DEditor::get_singleton()->add_control_to_menu_panel(particles_editor_hb);
options = memnew(MenuButton);
options->set_switch_on_hover(true);
particles_editor_hb->add_child(options);
particles_editor_hb->hide();
options->set_text(TTR("GPUParticles3D"));
options->get_popup()->add_item(TTR("Restart"), MENU_OPTION_RESTART);
options->get_popup()->add_item(TTR("Generate AABB"), MENU_OPTION_GENERATE_AABB);
options->get_popup()->add_item(TTR("Create Emission Points From Node"), MENU_OPTION_CREATE_EMISSION_VOLUME_FROM_NODE);
options->get_popup()->add_item(TTR("Convert to CPUParticles3D"), MENU_OPTION_CONVERT_TO_CPU_PARTICLES);
options->get_popup()->connect("id_pressed", callable_mp(this, &GPUParticles3DEditor::_menu_option));
generate_aabb = memnew(ConfirmationDialog);
generate_aabb->set_title(TTR("Generate Visibility AABB"));
VBoxContainer *genvb = memnew(VBoxContainer);
generate_aabb->add_child(genvb);
generate_seconds = memnew(SpinBox);
genvb->add_margin_child(TTR("Generation Time (sec):"), generate_seconds);
generate_seconds->set_min(0.1);
generate_seconds->set_max(25);
generate_seconds->set_value(2);
add_child(generate_aabb);
generate_aabb->connect("confirmed", callable_mp(this, &GPUParticles3DEditor::_generate_aabb));
}
void GPUParticles3DEditorPlugin::edit(Object *p_object) {
particles_editor->edit(Object::cast_to<GPUParticles3D>(p_object));
}
bool GPUParticles3DEditorPlugin::handles(Object *p_object) const {
return p_object->is_class("GPUParticles3D");
}
void GPUParticles3DEditorPlugin::make_visible(bool p_visible) {
if (p_visible) {
particles_editor->show();
particles_editor->particles_editor_hb->show();
} else {
particles_editor->particles_editor_hb->hide();
particles_editor->hide();
particles_editor->edit(nullptr);
}
}
GPUParticles3DEditorPlugin::GPUParticles3DEditorPlugin(EditorNode *p_node) {
editor = p_node;
particles_editor = memnew(GPUParticles3DEditor);
editor->get_main_control()->add_child(particles_editor);
particles_editor->hide();
}
GPUParticles3DEditorPlugin::~GPUParticles3DEditorPlugin() {
}