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pandemonium_engine/editor/plugins/collision_polygon_editor_plugin.cpp

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/*************************************************************************/
/* collision_polygon_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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 "collision_polygon_editor_plugin.h"
#include "core/os/input.h"
#include "core/os/keyboard.h"
#include "editor/editor_settings.h"
#include "scene/3d/camera.h"
#include "spatial_editor_plugin.h"
#include "core/variant/array.h"
#include "core/class_db.h"
#include "core/math/color.h"
#include "core/error_macros.h"
#include "core/math/aabb.h"
#include "core/math/basis.h"
#include "core/math/geometry.h"
#include "core/math/math_defs.h"
#include "core/math/plane.h"
#include "core/math/rect2.h"
#include "core/math/transform.h"
#include "core/math/vector3.h"
#include "core/os/input_event.h"
#include "core/os/memory.h"
#include "core/containers/pool_vector.h"
#include "core/undo_redo.h"
#include "core/variant/variant.h"
#include "editor/editor_node.h"
#include "scene/3d/immediate_geometry.h"
#include "scene/3d/mesh_instance.h"
#include "scene/3d/spatial.h"
#include "scene/gui/control.h"
#include "scene/gui/separator.h"
#include "scene/gui/tool_button.h"
#include "scene/main/node.h"
#include "scene/main/scene_tree.h"
#include "scene/resources/material.h"
#include "scene/resources/mesh.h"
#include "scene/resources/texture.h"
void Polygon3DEditor::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_READY: {
button_create->set_icon(get_icon("Edit", "EditorIcons"));
button_edit->set_icon(get_icon("MovePoint", "EditorIcons"));
button_edit->set_pressed(true);
get_tree()->connect("node_removed", this, "_node_removed");
} break;
case NOTIFICATION_PROCESS: {
if (!node) {
return;
}
if (_get_depth() != prev_depth) {
_polygon_draw();
prev_depth = _get_depth();
}
} break;
}
}
void Polygon3DEditor::_node_removed(Node *p_node) {
if (p_node == node) {
node = nullptr;
if (imgeom->get_parent() == p_node) {
p_node->remove_child(imgeom);
}
hide();
set_process(false);
}
}
void Polygon3DEditor::_menu_option(int p_option) {
switch (p_option) {
case MODE_CREATE: {
mode = MODE_CREATE;
button_create->set_pressed(true);
button_edit->set_pressed(false);
} break;
case MODE_EDIT: {
mode = MODE_EDIT;
button_create->set_pressed(false);
button_edit->set_pressed(true);
} break;
}
}
void Polygon3DEditor::_wip_close() {
undo_redo->create_action(TTR("Create Polygon3D"));
undo_redo->add_undo_method(node, "set_polygon", node->call("get_polygon"));
undo_redo->add_do_method(node, "set_polygon", wip);
undo_redo->add_do_method(this, "_polygon_draw");
undo_redo->add_undo_method(this, "_polygon_draw");
wip.clear();
wip_active = false;
mode = MODE_EDIT;
button_edit->set_pressed(true);
button_create->set_pressed(false);
edited_point = -1;
undo_redo->commit_action();
}
EditorPlugin::AfterGUIInput Polygon3DEditor::forward_spatial_gui_input(Camera *p_camera, const Ref<InputEvent> &p_event) {
if (!node) {
return EditorPlugin::AFTER_GUI_INPUT_PASS;
}
Transform gt = node->get_global_transform();
Transform gi = gt.affine_inverse();
float depth = _get_depth() * 0.5;
Vector3 n = gt.basis.get_axis(2).normalized();
Plane p(gt.origin + n * depth, n);
Ref<InputEventMouseButton> mb = p_event;
if (mb.is_valid()) {
Vector2 gpoint = mb->get_position();
Vector3 ray_from = p_camera->project_ray_origin(gpoint);
Vector3 ray_dir = p_camera->project_ray_normal(gpoint);
Vector3 spoint;
if (!p.intersects_ray(ray_from, ray_dir, &spoint)) {
return EditorPlugin::AFTER_GUI_INPUT_PASS;
}
spoint = gi.xform(spoint);
Vector2 cpoint(spoint.x, spoint.y);
//DO NOT snap here, it's confusing in 3D for adding points.
//Let the snap happen when the point is being moved, instead.
//cpoint = CanvasItemEditor::get_singleton()->snap_point(cpoint);
Vector<Vector2> poly = node->call("get_polygon");
//first check if a point is to be added (segment split)
real_t grab_threshold = EDITOR_GET("editors/poly_editor/point_grab_radius");
switch (mode) {
case MODE_CREATE: {
if (mb->get_button_index() == BUTTON_LEFT && mb->is_pressed()) {
if (!wip_active) {
wip.clear();
wip.push_back(cpoint);
wip_active = true;
edited_point_pos = cpoint;
snap_ignore = false;
_polygon_draw();
edited_point = 1;
return EditorPlugin::AFTER_GUI_INPUT_STOP;
} else {
if (wip.size() > 1 && p_camera->unproject_position(gt.xform(Vector3(wip[0].x, wip[0].y, depth))).distance_to(gpoint) < grab_threshold) {
//wip closed
_wip_close();
return EditorPlugin::AFTER_GUI_INPUT_STOP;
} else {
wip.push_back(cpoint);
edited_point = wip.size();
snap_ignore = false;
_polygon_draw();
return EditorPlugin::AFTER_GUI_INPUT_STOP;
}
}
} else if (mb->get_button_index() == BUTTON_RIGHT && mb->is_pressed() && wip_active) {
_wip_close();
}
} break;
case MODE_EDIT: {
if (mb->get_button_index() == BUTTON_LEFT) {
if (mb->is_pressed()) {
if (mb->get_control()) {
if (poly.size() < 3) {
undo_redo->create_action(TTR("Edit Poly"));
undo_redo->add_undo_method(node, "set_polygon", poly);
poly.push_back(cpoint);
undo_redo->add_do_method(node, "set_polygon", poly);
undo_redo->add_do_method(this, "_polygon_draw");
undo_redo->add_undo_method(this, "_polygon_draw");
undo_redo->commit_action();
return EditorPlugin::AFTER_GUI_INPUT_STOP;
}
//search edges
int closest_idx = -1;
Vector2 closest_pos;
real_t closest_dist = 1e10;
for (int i = 0; i < poly.size(); i++) {
Vector2 points[2] = {
p_camera->unproject_position(gt.xform(Vector3(poly[i].x, poly[i].y, depth))),
p_camera->unproject_position(gt.xform(Vector3(poly[(i + 1) % poly.size()].x, poly[(i + 1) % poly.size()].y, depth)))
};
Vector2 cp = Geometry::get_closest_point_to_segment_2d(gpoint, points);
if (cp.distance_squared_to(points[0]) < CMP_EPSILON2 || cp.distance_squared_to(points[1]) < CMP_EPSILON2) {
continue; //not valid to reuse point
}
real_t d = cp.distance_to(gpoint);
if (d < closest_dist && d < grab_threshold) {
closest_dist = d;
closest_pos = cp;
closest_idx = i;
}
}
if (closest_idx >= 0) {
pre_move_edit = poly;
poly.insert(closest_idx + 1, cpoint);
edited_point = closest_idx + 1;
edited_point_pos = cpoint;
node->call("set_polygon", poly);
_polygon_draw();
snap_ignore = true;
return EditorPlugin::AFTER_GUI_INPUT_STOP;
}
} else {
//look for points to move
int closest_idx = -1;
Vector2 closest_pos;
real_t closest_dist = 1e10;
for (int i = 0; i < poly.size(); i++) {
Vector2 cp = p_camera->unproject_position(gt.xform(Vector3(poly[i].x, poly[i].y, depth)));
real_t d = cp.distance_to(gpoint);
if (d < closest_dist && d < grab_threshold) {
closest_dist = d;
closest_pos = cp;
closest_idx = i;
}
}
if (closest_idx >= 0) {
pre_move_edit = poly;
edited_point = closest_idx;
edited_point_pos = poly[closest_idx];
_polygon_draw();
snap_ignore = false;
return EditorPlugin::AFTER_GUI_INPUT_STOP;
}
}
} else {
snap_ignore = false;
if (edited_point != -1) {
//apply
ERR_FAIL_INDEX_V(edited_point, poly.size(), EditorPlugin::AFTER_GUI_INPUT_PASS);
poly.write[edited_point] = edited_point_pos;
undo_redo->create_action(TTR("Edit Poly"));
undo_redo->add_do_method(node, "set_polygon", poly);
undo_redo->add_undo_method(node, "set_polygon", pre_move_edit);
undo_redo->add_do_method(this, "_polygon_draw");
undo_redo->add_undo_method(this, "_polygon_draw");
undo_redo->commit_action();
edited_point = -1;
return EditorPlugin::AFTER_GUI_INPUT_STOP;
}
}
}
if (mb->get_button_index() == BUTTON_RIGHT && mb->is_pressed() && edited_point == -1) {
int closest_idx = -1;
Vector2 closest_pos;
real_t closest_dist = 1e10;
for (int i = 0; i < poly.size(); i++) {
Vector2 cp = p_camera->unproject_position(gt.xform(Vector3(poly[i].x, poly[i].y, depth)));
real_t d = cp.distance_to(gpoint);
if (d < closest_dist && d < grab_threshold) {
closest_dist = d;
closest_pos = cp;
closest_idx = i;
}
}
if (closest_idx >= 0) {
undo_redo->create_action(TTR("Edit Poly (Remove Point)"));
undo_redo->add_undo_method(node, "set_polygon", poly);
poly.remove(closest_idx);
undo_redo->add_do_method(node, "set_polygon", poly);
undo_redo->add_do_method(this, "_polygon_draw");
undo_redo->add_undo_method(this, "_polygon_draw");
undo_redo->commit_action();
return EditorPlugin::AFTER_GUI_INPUT_STOP;
}
}
} break;
}
}
Ref<InputEventMouseMotion> mm = p_event;
if (mm.is_valid()) {
if (edited_point != -1 && (wip_active || mm->get_button_mask() & BUTTON_MASK_LEFT)) {
Vector2 gpoint = mm->get_position();
Vector3 ray_from = p_camera->project_ray_origin(gpoint);
Vector3 ray_dir = p_camera->project_ray_normal(gpoint);
Vector3 spoint;
if (!p.intersects_ray(ray_from, ray_dir, &spoint)) {
return EditorPlugin::AFTER_GUI_INPUT_PASS;
}
spoint = gi.xform(spoint);
Vector2 cpoint(spoint.x, spoint.y);
if (snap_ignore && !Input::get_singleton()->is_key_pressed(KEY_CONTROL)) {
snap_ignore = false;
}
if (!snap_ignore && SpatialEditor::get_singleton()->is_snap_enabled()) {
cpoint = cpoint.snapped(Vector2(
SpatialEditor::get_singleton()->get_translate_snap(),
SpatialEditor::get_singleton()->get_translate_snap()));
}
edited_point_pos = cpoint;
_polygon_draw();
}
}
return EditorPlugin::AFTER_GUI_INPUT_PASS;
}
float Polygon3DEditor::_get_depth() {
if (bool(node->call("_has_editable_3d_polygon_no_depth"))) {
return 0;
}
return float(node->call("get_depth"));
}
void Polygon3DEditor::_polygon_draw() {
if (!node) {
return;
}
Vector<Vector2> poly;
if (wip_active) {
poly = wip;
} else {
poly = node->call("get_polygon");
}
float depth = _get_depth() * 0.5;
imgeom->clear();
imgeom->set_material_override(line_material);
imgeom->begin(Mesh::PRIMITIVE_LINES, Ref<Texture>());
Rect2 rect;
for (int i = 0; i < poly.size(); i++) {
Vector2 p, p2;
p = i == edited_point ? edited_point_pos : poly[i];
if ((wip_active && i == poly.size() - 1) || (((i + 1) % poly.size()) == edited_point)) {
p2 = edited_point_pos;
} else {
p2 = poly[(i + 1) % poly.size()];
}
if (i == 0) {
rect.position = p;
} else {
rect.expand_to(p);
}
Vector3 point = Vector3(p.x, p.y, depth);
Vector3 next_point = Vector3(p2.x, p2.y, depth);
imgeom->set_color(Color(1, 0.3, 0.1, 0.8));
imgeom->add_vertex(point);
imgeom->set_color(Color(1, 0.3, 0.1, 0.8));
imgeom->add_vertex(next_point);
//Color col=Color(1,0.3,0.1,0.8);
//vpc->draw_line(point,next_point,col,2);
//vpc->draw_texture(handle,point-handle->get_size()*0.5);
}
rect = rect.grow(1);
AABB r;
r.position.x = rect.position.x;
r.position.y = rect.position.y;
r.position.z = depth;
r.size.x = rect.size.x;
r.size.y = rect.size.y;
r.size.z = 0;
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position);
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + Vector3(0.3, 0, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position);
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + Vector3(0.0, 0.3, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + Vector3(r.size.x, 0, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + Vector3(r.size.x, 0, 0) - Vector3(0.3, 0, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + Vector3(r.size.x, 0, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + Vector3(r.size.x, 0, 0) + Vector3(0, 0.3, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + Vector3(0, r.size.y, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + Vector3(0, r.size.y, 0) - Vector3(0, 0.3, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + Vector3(0, r.size.y, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + Vector3(0, r.size.y, 0) + Vector3(0.3, 0, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + r.size);
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + r.size - Vector3(0.3, 0, 0));
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + r.size);
imgeom->set_color(Color(0.8, 0.8, 0.8, 0.2));
imgeom->add_vertex(r.position + r.size - Vector3(0.0, 0.3, 0));
imgeom->end();
while (m->get_surface_count()) {
m->surface_remove(0);
}
if (poly.size() == 0) {
return;
}
Array a;
a.resize(Mesh::ARRAY_MAX);
PoolVector<Vector3> va;
{
va.resize(poly.size());
PoolVector<Vector3>::Write w = va.write();
for (int i = 0; i < poly.size(); i++) {
Vector2 p, p2;
p = i == edited_point ? edited_point_pos : poly[i];
Vector3 point = Vector3(p.x, p.y, depth);
w[i] = point;
}
}
a[Mesh::ARRAY_VERTEX] = va;
m->add_surface_from_arrays(Mesh::PRIMITIVE_POINTS, a);
m->surface_set_material(0, handle_material);
}
void Polygon3DEditor::edit(Node *p_collision_polygon) {
if (p_collision_polygon) {
node = Object::cast_to<Spatial>(p_collision_polygon);
//Enable the pencil tool if the polygon is empty
if (Vector<Vector2>(node->call("get_polygon")).size() == 0) {
_menu_option(MODE_CREATE);
}
wip.clear();
wip_active = false;
edited_point = -1;
p_collision_polygon->add_child(imgeom);
_polygon_draw();
set_process(true);
prev_depth = -1;
} else {
node = nullptr;
if (imgeom->get_parent()) {
imgeom->get_parent()->remove_child(imgeom);
}
set_process(false);
}
}
void Polygon3DEditor::_bind_methods() {
ClassDB::bind_method(D_METHOD("_menu_option"), &Polygon3DEditor::_menu_option);
ClassDB::bind_method(D_METHOD("_polygon_draw"), &Polygon3DEditor::_polygon_draw);
ClassDB::bind_method(D_METHOD("_node_removed"), &Polygon3DEditor::_node_removed);
}
Polygon3DEditor::Polygon3DEditor(EditorNode *p_editor) {
node = nullptr;
editor = p_editor;
undo_redo = EditorNode::get_undo_redo();
add_child(memnew(VSeparator));
button_create = memnew(ToolButton);
add_child(button_create);
button_create->connect("pressed", this, "_menu_option", varray(MODE_CREATE));
button_create->set_toggle_mode(true);
button_edit = memnew(ToolButton);
add_child(button_edit);
button_edit->connect("pressed", this, "_menu_option", varray(MODE_EDIT));
button_edit->set_toggle_mode(true);
mode = MODE_EDIT;
wip_active = false;
imgeom = memnew(ImmediateGeometry);
imgeom->set_transform(Transform(Basis(), Vector3(0, 0, 0.00001)));
line_material = Ref<SpatialMaterial>(memnew(SpatialMaterial));
line_material->set_flag(SpatialMaterial::FLAG_UNSHADED, true);
line_material->set_line_width(3.0);
line_material->set_feature(SpatialMaterial::FEATURE_TRANSPARENT, true);
line_material->set_flag(SpatialMaterial::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
line_material->set_flag(SpatialMaterial::FLAG_SRGB_VERTEX_COLOR, true);
line_material->set_albedo(Color(1, 1, 1));
handle_material = Ref<SpatialMaterial>(memnew(SpatialMaterial));
handle_material->set_flag(SpatialMaterial::FLAG_UNSHADED, true);
handle_material->set_flag(SpatialMaterial::FLAG_USE_POINT_SIZE, true);
handle_material->set_feature(SpatialMaterial::FEATURE_TRANSPARENT, true);
handle_material->set_flag(SpatialMaterial::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);
handle_material->set_flag(SpatialMaterial::FLAG_SRGB_VERTEX_COLOR, true);
Ref<Texture> handle = editor->get_gui_base()->get_icon("Editor3DHandle", "EditorIcons");
handle_material->set_point_size(handle->get_width());
handle_material->set_texture(SpatialMaterial::TEXTURE_ALBEDO, handle);
pointsm = memnew(MeshInstance);
imgeom->add_child(pointsm);
m.instance();
pointsm->set_mesh(m);
pointsm->set_transform(Transform(Basis(), Vector3(0, 0, 0.00001)));
snap_ignore = false;
}
Polygon3DEditor::~Polygon3DEditor() {
memdelete(imgeom);
}
void Polygon3DEditorPlugin::edit(Object *p_object) {
collision_polygon_editor->edit(Object::cast_to<Node>(p_object));
}
bool Polygon3DEditorPlugin::handles(Object *p_object) const {
return Object::cast_to<Spatial>(p_object) && bool(p_object->call("_is_editable_3d_polygon"));
}
void Polygon3DEditorPlugin::make_visible(bool p_visible) {
if (p_visible) {
collision_polygon_editor->show();
} else {
collision_polygon_editor->hide();
collision_polygon_editor->edit(nullptr);
}
}
Polygon3DEditorPlugin::Polygon3DEditorPlugin(EditorNode *p_node) {
editor = p_node;
collision_polygon_editor = memnew(Polygon3DEditor(p_node));
SpatialEditor::get_singleton()->add_control_to_menu_panel(collision_polygon_editor);
collision_polygon_editor->hide();
}
Polygon3DEditorPlugin::~Polygon3DEditorPlugin() {
}
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