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godot/editor/scene/2d/path_2d_editor_plugin.cpp
noahbackus 9d30169a8d
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initial commit, 4.5 stable
2025-09-16 20:46:46 -04:00

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/**************************************************************************/
/* path_2d_editor_plugin.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "path_2d_editor_plugin.h"
#include "core/os/keyboard.h"
#include "editor/editor_node.h"
#include "editor/editor_undo_redo_manager.h"
#include "editor/scene/canvas_item_editor_plugin.h"
#include "editor/settings/editor_settings.h"
#include "editor/themes/editor_scale.h"
#include "scene/gui/dialogs.h"
#include "scene/gui/menu_button.h"
void Path2DEditor::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_THEME_CHANGED: {
curve_edit->set_button_icon(get_editor_theme_icon(SNAME("CurveEdit")));
curve_edit_curve->set_button_icon(get_editor_theme_icon(SNAME("CurveCurve")));
curve_create->set_button_icon(get_editor_theme_icon(SNAME("CurveCreate")));
curve_del->set_button_icon(get_editor_theme_icon(SNAME("CurveDelete")));
curve_close->set_button_icon(get_editor_theme_icon(SNAME("CurveClose")));
curve_clear_points->set_button_icon(get_editor_theme_icon(SNAME("Clear")));
create_curve_button->set_button_icon(get_editor_theme_icon(SNAME("Curve2D")));
} break;
}
}
void Path2DEditor::_node_removed(Node *p_node) {
if (p_node == node) {
node = nullptr;
hide();
}
}
bool Path2DEditor::forward_gui_input(const Ref<InputEvent> &p_event) {
if (!node) {
return false;
}
if (!node->is_visible_in_tree()) {
return false;
}
Viewport *vp = node->get_viewport();
if (vp && !vp->is_visible_subviewport()) {
return false;
}
if (node->get_curve().is_null()) {
return false;
}
real_t grab_threshold = EDITOR_GET("editors/polygon_editor/point_grab_radius");
Ref<InputEventMouseButton> mb = p_event;
if (mb.is_valid()) {
Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_screen_transform();
Vector2 gpoint = mb->get_position();
Vector2 cpoint = canvas_item_editor->snap_point(canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint));
cpoint = node->to_local(node->get_viewport()->get_popup_base_transform().affine_inverse().xform(cpoint));
if (mb->is_pressed() && action == ACTION_NONE) {
Ref<Curve2D> curve = node->get_curve();
original_mouse_pos = gpoint;
for (int i = 0; i < curve->get_point_count(); i++) {
real_t dist_to_p = gpoint.distance_to(xform.xform(curve->get_point_position(i)));
real_t dist_to_p_out = gpoint.distance_to(xform.xform(curve->get_point_position(i) + curve->get_point_out(i)));
real_t dist_to_p_in = gpoint.distance_to(xform.xform(curve->get_point_position(i) + curve->get_point_in(i)));
// Check for point movement start (for point + in/out controls).
if (mb->get_button_index() == MouseButton::LEFT) {
if (mode == MODE_EDIT && !mb->is_shift_pressed() && dist_to_p < grab_threshold) {
// Points can only be moved in edit mode.
action = ACTION_MOVING_POINT;
action_point = i;
moving_from = curve->get_point_position(i);
moving_screen_from = gpoint;
return true;
} else if (mode == MODE_EDIT || mode == MODE_EDIT_CURVE) {
control_points_in_range = 0;
// In/out controls can be moved in multiple modes.
if (dist_to_p_out < grab_threshold && i < (curve->get_point_count() - 1)) {
action = ACTION_MOVING_OUT;
action_point = i;
moving_from = curve->get_point_out(i);
moving_screen_from = gpoint;
orig_in_length = curve->get_point_in(action_point).length();
control_points_in_range += 1;
}
if (dist_to_p_in < grab_threshold && i > 0) {
action = ACTION_MOVING_IN;
action_point = i;
moving_from = curve->get_point_in(i);
moving_screen_from = gpoint;
orig_out_length = curve->get_point_out(action_point).length();
control_points_in_range += 1;
}
if (control_points_in_range > 0) {
return true;
}
}
}
// Check for point deletion.
EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
if ((mb->get_button_index() == MouseButton::RIGHT && (mode == MODE_EDIT || mode == MODE_CREATE)) || (mb->get_button_index() == MouseButton::LEFT && mode == MODE_DELETE)) {
if (dist_to_p < grab_threshold) {
undo_redo->create_action(TTR("Remove Point from Curve"));
undo_redo->add_do_method(curve.ptr(), "remove_point", i);
undo_redo->add_undo_method(curve.ptr(), "add_point", curve->get_point_position(i), curve->get_point_in(i), curve->get_point_out(i), i);
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action();
return true;
} else if (dist_to_p_out < grab_threshold) {
undo_redo->create_action(TTR("Remove Out-Control from Curve"));
undo_redo->add_do_method(curve.ptr(), "set_point_out", i, Vector2());
undo_redo->add_undo_method(curve.ptr(), "set_point_out", i, curve->get_point_out(i));
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action();
return true;
} else if (dist_to_p_in < grab_threshold) {
undo_redo->create_action(TTR("Remove In-Control from Curve"));
undo_redo->add_do_method(curve.ptr(), "set_point_in", i, Vector2());
undo_redo->add_undo_method(curve.ptr(), "set_point_in", i, curve->get_point_in(i));
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action();
return true;
}
}
}
}
if (action != ACTION_NONE && mb->is_pressed() && mb->get_button_index() == MouseButton::RIGHT) {
_cancel_current_action();
return true;
}
// Check for point creation.
if (mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT && ((mb->is_command_or_control_pressed() && mode == MODE_EDIT) || mode == MODE_CREATE)) {
Ref<Curve2D> curve = node->get_curve();
curve->add_point(cpoint);
moving_from = cpoint;
action = ACTION_MOVING_NEW_POINT;
action_point = curve->get_point_count() - 1;
moving_from = curve->get_point_position(action_point);
moving_screen_from = gpoint;
canvas_item_editor->update_viewport();
return true;
}
// Check for segment split.
if (mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT && mode == MODE_EDIT && on_edge) {
Vector2 gpoint2 = mb->get_position();
Ref<Curve2D> curve = node->get_curve();
int insertion_point = -1;
float mbLength = curve->get_closest_offset(xform.affine_inverse().xform(gpoint2));
int len = curve->get_point_count();
for (int i = 0; i < len - 1; i++) {
float compareLength = curve->get_closest_offset(curve->get_point_position(i + 1));
if (mbLength >= curve->get_closest_offset(curve->get_point_position(i)) && mbLength <= compareLength) {
insertion_point = i;
}
}
if (insertion_point == -1) {
insertion_point = curve->get_point_count() - 2;
}
const Vector2 new_point = xform.affine_inverse().xform(gpoint2);
curve->add_point(new_point, Vector2(0, 0), Vector2(0, 0), insertion_point + 1);
action = ACTION_MOVING_NEW_POINT_FROM_SPLIT;
action_point = insertion_point + 1;
moving_from = curve->get_point_position(action_point);
moving_screen_from = gpoint2;
canvas_item_editor->update_viewport();
on_edge = false;
return true;
}
// Check for point movement completion.
if (!mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT && action != ACTION_NONE) {
Ref<Curve2D> curve = node->get_curve();
EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
Vector2 new_pos = moving_from + xform.affine_inverse().basis_xform(gpoint - moving_screen_from);
switch (action) {
case ACTION_NONE:
// N/A, handled in above condition.
break;
case ACTION_MOVING_POINT:
if (original_mouse_pos != gpoint) {
undo_redo->create_action(TTR("Move Point in Curve"));
undo_redo->add_undo_method(curve.ptr(), "set_point_position", action_point, moving_from);
undo_redo->add_do_method(curve.ptr(), "set_point_position", action_point, cpoint);
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action(false);
}
break;
case ACTION_MOVING_NEW_POINT: {
undo_redo->create_action(TTR("Add Point to Curve"));
undo_redo->add_do_method(curve.ptr(), "add_point", cpoint);
undo_redo->add_do_method(curve.ptr(), "set_point_position", action_point, cpoint);
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(curve.ptr(), "remove_point", curve->get_point_count() - 1);
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action(false);
} break;
case ACTION_MOVING_NEW_POINT_FROM_SPLIT: {
undo_redo->create_action(TTR("Split Curve"));
undo_redo->add_do_method(curve.ptr(), "add_point", Vector2(), Vector2(), Vector2(), action_point);
undo_redo->add_do_method(curve.ptr(), "set_point_position", action_point, cpoint);
undo_redo->add_undo_method(curve.ptr(), "remove_point", action_point);
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action(false);
} break;
case ACTION_MOVING_IN: {
if (original_mouse_pos != gpoint) {
undo_redo->create_action(TTR("Move In-Control in Curve"));
undo_redo->add_do_method(curve.ptr(), "set_point_in", action_point, new_pos);
undo_redo->add_undo_method(curve.ptr(), "set_point_in", action_point, moving_from);
if (mirror_handle_angle) {
undo_redo->add_do_method(curve.ptr(), "set_point_out", action_point, mirror_handle_length ? -new_pos : (-new_pos.normalized() * orig_out_length));
undo_redo->add_undo_method(curve.ptr(), "set_point_out", action_point, mirror_handle_length ? -moving_from : (-moving_from.normalized() * orig_out_length));
}
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action();
}
} break;
case ACTION_MOVING_OUT: {
if (original_mouse_pos != gpoint) {
undo_redo->create_action(TTR("Move Out-Control in Curve"));
undo_redo->add_do_method(curve.ptr(), "set_point_out", action_point, new_pos);
undo_redo->add_undo_method(curve.ptr(), "set_point_out", action_point, moving_from);
if (mirror_handle_angle) {
undo_redo->add_do_method(curve.ptr(), "set_point_in", action_point, mirror_handle_length ? -new_pos : (-new_pos.normalized() * orig_in_length));
undo_redo->add_undo_method(curve.ptr(), "set_point_in", action_point, mirror_handle_length ? -moving_from : (-moving_from.normalized() * orig_in_length));
}
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action();
}
} break;
}
action = ACTION_NONE;
return true;
}
}
Ref<InputEventMouseMotion> mm = p_event;
if (mm.is_valid()) {
// When both control points were in range of click,
// pick the point that drags the curve outwards.
if (control_points_in_range == 2) {
control_points_in_range = 0;
Ref<Curve2D> curve = node->get_curve();
Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_screen_transform();
Point2 relative = xform.affine_inverse().basis_xform(mm->get_relative());
real_t angle_in = relative.angle_to(curve->get_point_position(action_point - 1) - curve->get_point_position(action_point));
real_t angle_out = relative.angle_to(curve->get_point_position(action_point + 1) - curve->get_point_position(action_point));
if (Math::abs(angle_in) < Math::abs(angle_out)) {
action = ACTION_MOVING_IN;
moving_from = curve->get_point_in(action_point);
orig_out_length = curve->get_point_out(action_point).length();
} else {
action = ACTION_MOVING_OUT;
moving_from = curve->get_point_out(action_point);
orig_in_length = curve->get_point_in(action_point).length();
}
}
if (action == ACTION_NONE && mode == MODE_EDIT) {
// Handle Edge Follow
bool old_edge = on_edge;
Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_screen_transform();
Vector2 gpoint = mm->get_position();
Ref<Curve2D> curve = node->get_curve();
if (curve.is_null()) {
return true;
}
if (curve->get_point_count() < 2) {
return true;
}
// Find edge
edge_point = xform.xform(curve->get_closest_point(xform.affine_inverse().xform(mm->get_position())));
on_edge = false;
if (edge_point.distance_to(gpoint) <= grab_threshold) {
on_edge = true;
}
// However, if near a control point or its in-out handles then not on edge
int len = curve->get_point_count();
for (int i = 0; i < len; i++) {
Vector2 pp = curve->get_point_position(i);
Vector2 p = xform.xform(pp);
if (p.distance_to(gpoint) <= grab_threshold) {
on_edge = false;
break;
}
p = xform.xform(pp + curve->get_point_in(i));
if (p.distance_to(gpoint) <= grab_threshold) {
on_edge = false;
break;
}
p = xform.xform(pp + curve->get_point_out(i));
if (p.distance_to(gpoint) <= grab_threshold) {
on_edge = false;
break;
}
}
if (on_edge || old_edge != on_edge) {
canvas_item_editor->update_viewport();
return true;
}
}
if (action != ACTION_NONE) {
// Handle point/control movement.
Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_screen_transform();
Vector2 gpoint = mm->get_position();
Vector2 cpoint = canvas_item_editor->snap_point(canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint));
cpoint = node->to_local(node->get_viewport()->get_popup_base_transform().affine_inverse().xform(cpoint));
Ref<Curve2D> curve = node->get_curve();
Vector2 new_pos = moving_from + xform.affine_inverse().basis_xform(gpoint - moving_screen_from);
switch (action) {
case ACTION_NONE:
// N/A, handled in above condition.
break;
case ACTION_MOVING_POINT:
case ACTION_MOVING_NEW_POINT:
case ACTION_MOVING_NEW_POINT_FROM_SPLIT: {
curve->set_point_position(action_point, cpoint);
} break;
case ACTION_MOVING_IN: {
curve->set_point_in(action_point, new_pos);
if (mirror_handle_angle) {
curve->set_point_out(action_point, mirror_handle_length ? -new_pos : (-new_pos.normalized() * orig_out_length));
}
} break;
case ACTION_MOVING_OUT: {
curve->set_point_out(action_point, new_pos);
if (mirror_handle_angle) {
curve->set_point_in(action_point, mirror_handle_length ? -new_pos : (-new_pos.normalized() * orig_in_length));
}
} break;
}
canvas_item_editor->update_viewport();
return true;
}
}
return false;
}
void Path2DEditor::forward_canvas_draw_over_viewport(Control *p_overlay) {
if (!node || !node->is_visible_in_tree() || node->get_curve().is_null()) {
return;
}
Viewport *vp = node->get_viewport();
if (vp && !vp->is_visible_subviewport()) {
return;
}
Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_screen_transform();
const Ref<Texture2D> path_sharp_handle = get_editor_theme_icon(SNAME("EditorPathSharpHandle"));
const Ref<Texture2D> path_smooth_handle = get_editor_theme_icon(SNAME("EditorPathSmoothHandle"));
// Both handle icons must be of the same size
const Size2 handle_size = path_sharp_handle->get_size();
const Ref<Texture2D> curve_handle = get_editor_theme_icon(SNAME("EditorCurveHandle"));
const Size2 curve_handle_size = curve_handle->get_size();
Ref<Curve2D> curve = node->get_curve();
int len = curve->get_point_count();
Control *vpc = canvas_item_editor->get_viewport_control();
debug_handle_lines.clear();
debug_handle_curve_transforms.clear();
debug_handle_sharp_transforms.clear();
debug_handle_smooth_transforms.clear();
Transform2D handle_curve_transform = Transform2D().scaled(curve_handle_size * 0.5);
Transform2D handle_point_transform = Transform2D().scaled(handle_size * 0.5);
for (int i = 0; i < len; i++) {
Vector2 point = xform.xform(curve->get_point_position(i));
// Determines the point icon to be used
bool smooth = false;
if (i < len - 1) {
Vector2 point_out = xform.xform(curve->get_point_position(i) + curve->get_point_out(i));
if (point != point_out) {
smooth = true;
debug_handle_lines.push_back(point);
debug_handle_lines.push_back(point_out);
handle_curve_transform.set_origin(point_out);
debug_handle_curve_transforms.push_back(handle_curve_transform);
}
}
if (i > 0) {
Vector2 point_in = xform.xform(curve->get_point_position(i) + curve->get_point_in(i));
if (point != point_in) {
smooth = true;
debug_handle_lines.push_back(point);
debug_handle_lines.push_back(point_in);
handle_curve_transform.set_origin(point_in);
debug_handle_curve_transforms.push_back(handle_curve_transform);
}
}
handle_point_transform.set_origin(point);
if (smooth) {
debug_handle_smooth_transforms.push_back(handle_point_transform);
} else {
debug_handle_sharp_transforms.push_back(handle_point_transform);
}
}
if (on_edge) {
Ref<Texture2D> add_handle = get_editor_theme_icon(SNAME("EditorHandleAdd"));
p_overlay->draw_texture(add_handle, edge_point - add_handle->get_size() * 0.5);
}
RenderingServer *rs = RS::get_singleton();
rs->mesh_clear(debug_mesh_rid);
if (!debug_handle_lines.is_empty()) {
Array handles_array;
handles_array.resize(Mesh::ARRAY_MAX);
handles_array[Mesh::ARRAY_VERTEX] = Vector<Vector2>(debug_handle_lines);
rs->mesh_add_surface_from_arrays(debug_mesh_rid, RS::PRIMITIVE_LINES, handles_array, Array(), Dictionary(), RS::ARRAY_FLAG_USE_2D_VERTICES);
rs->canvas_item_add_mesh(vpc->get_canvas_item(), debug_mesh_rid, Transform2D(), Color(0.5, 0.5, 0.5, 1.0));
}
// Add texture rects multimeshes for handle vertices.
uint32_t handle_curve_count = debug_handle_curve_transforms.size();
uint32_t handle_sharp_count = debug_handle_sharp_transforms.size();
uint32_t handle_smooth_count = debug_handle_smooth_transforms.size();
// Add texture rects for curve handle vertices.
rs->multimesh_set_visible_instances(debug_handle_curve_multimesh_rid, 0);
if (handle_curve_count > 0) {
if (rs->multimesh_get_instance_count(debug_handle_curve_multimesh_rid) != int(handle_curve_count)) {
rs->multimesh_allocate_data(debug_handle_curve_multimesh_rid, handle_curve_count, RS::MULTIMESH_TRANSFORM_2D);
}
Vector<float> multimesh_buffer;
multimesh_buffer.resize(8 * handle_curve_count);
float *multimesh_buffer_ptrw = multimesh_buffer.ptrw();
const Transform2D *debug_handle_transforms_ptr = debug_handle_curve_transforms.ptr();
for (uint32_t i = 0; i < handle_curve_count; i++) {
const Transform2D &handle_transform = debug_handle_transforms_ptr[i];
multimesh_buffer_ptrw[i * 8 + 0] = handle_transform[0][0];
multimesh_buffer_ptrw[i * 8 + 1] = handle_transform[1][0];
multimesh_buffer_ptrw[i * 8 + 2] = 0;
multimesh_buffer_ptrw[i * 8 + 3] = handle_transform[2][0];
multimesh_buffer_ptrw[i * 8 + 4] = handle_transform[0][1];
multimesh_buffer_ptrw[i * 8 + 5] = handle_transform[1][1];
multimesh_buffer_ptrw[i * 8 + 6] = 0;
multimesh_buffer_ptrw[i * 8 + 7] = handle_transform[2][1];
}
rs->multimesh_set_buffer(debug_handle_curve_multimesh_rid, multimesh_buffer);
rs->multimesh_set_visible_instances(debug_handle_curve_multimesh_rid, handle_curve_count);
rs->canvas_item_add_multimesh(vpc->get_canvas_item(), debug_handle_curve_multimesh_rid, curve_handle->get_rid());
}
// Add texture rects for sharp handle vertices.
rs->multimesh_set_visible_instances(debug_handle_sharp_multimesh_rid, 0);
if (handle_sharp_count > 0) {
if (rs->multimesh_get_instance_count(debug_handle_sharp_multimesh_rid) != int(handle_sharp_count)) {
rs->multimesh_allocate_data(debug_handle_sharp_multimesh_rid, handle_sharp_count, RS::MULTIMESH_TRANSFORM_2D);
}
Vector<float> multimesh_buffer;
multimesh_buffer.resize(8 * handle_sharp_count);
float *multimesh_buffer_ptrw = multimesh_buffer.ptrw();
const Transform2D *debug_handle_transforms_ptr = debug_handle_sharp_transforms.ptr();
for (uint32_t i = 0; i < handle_sharp_count; i++) {
const Transform2D &handle_transform = debug_handle_transforms_ptr[i];
multimesh_buffer_ptrw[i * 8 + 0] = handle_transform[0][0];
multimesh_buffer_ptrw[i * 8 + 1] = handle_transform[1][0];
multimesh_buffer_ptrw[i * 8 + 2] = 0;
multimesh_buffer_ptrw[i * 8 + 3] = handle_transform[2][0];
multimesh_buffer_ptrw[i * 8 + 4] = handle_transform[0][1];
multimesh_buffer_ptrw[i * 8 + 5] = handle_transform[1][1];
multimesh_buffer_ptrw[i * 8 + 6] = 0;
multimesh_buffer_ptrw[i * 8 + 7] = handle_transform[2][1];
}
rs->multimesh_set_buffer(debug_handle_sharp_multimesh_rid, multimesh_buffer);
rs->multimesh_set_visible_instances(debug_handle_sharp_multimesh_rid, handle_sharp_count);
rs->canvas_item_add_multimesh(vpc->get_canvas_item(), debug_handle_sharp_multimesh_rid, curve_handle->get_rid());
}
// Add texture rects for smooth handle vertices.
rs->multimesh_set_visible_instances(debug_handle_smooth_multimesh_rid, 0);
if (handle_smooth_count > 0) {
if (rs->multimesh_get_instance_count(debug_handle_smooth_multimesh_rid) != int(handle_smooth_count)) {
rs->multimesh_allocate_data(debug_handle_smooth_multimesh_rid, handle_smooth_count, RS::MULTIMESH_TRANSFORM_2D);
}
Vector<float> multimesh_buffer;
multimesh_buffer.resize(8 * handle_smooth_count);
float *multimesh_buffer_ptrw = multimesh_buffer.ptrw();
const Transform2D *debug_handle_transforms_ptr = debug_handle_smooth_transforms.ptr();
for (uint32_t i = 0; i < handle_smooth_count; i++) {
const Transform2D &handle_transform = debug_handle_transforms_ptr[i];
multimesh_buffer_ptrw[i * 8 + 0] = handle_transform[0][0];
multimesh_buffer_ptrw[i * 8 + 1] = handle_transform[1][0];
multimesh_buffer_ptrw[i * 8 + 2] = 0;
multimesh_buffer_ptrw[i * 8 + 3] = handle_transform[2][0];
multimesh_buffer_ptrw[i * 8 + 4] = handle_transform[0][1];
multimesh_buffer_ptrw[i * 8 + 5] = handle_transform[1][1];
multimesh_buffer_ptrw[i * 8 + 6] = 0;
multimesh_buffer_ptrw[i * 8 + 7] = handle_transform[2][1];
}
rs->multimesh_set_buffer(debug_handle_smooth_multimesh_rid, multimesh_buffer);
rs->multimesh_set_visible_instances(debug_handle_smooth_multimesh_rid, handle_smooth_count);
rs->canvas_item_add_multimesh(vpc->get_canvas_item(), debug_handle_smooth_multimesh_rid, curve_handle->get_rid());
}
}
void Path2DEditor::_node_visibility_changed() {
if (!node) {
return;
}
canvas_item_editor->update_viewport();
_update_toolbar();
}
void Path2DEditor::_update_toolbar() {
if (!node) {
return;
}
bool has_curve = node->get_curve().is_valid();
toolbar->set_visible(has_curve);
create_curve_button->set_visible(!has_curve);
}
void Path2DEditor::edit(Node *p_path2d) {
if (!canvas_item_editor) {
canvas_item_editor = CanvasItemEditor::get_singleton();
}
if (action != ACTION_NONE) {
_cancel_current_action();
}
if (p_path2d) {
node = Object::cast_to<Path2D>(p_path2d);
_update_toolbar();
if (!node->is_connected(SceneStringName(visibility_changed), callable_mp(this, &Path2DEditor::_node_visibility_changed))) {
node->connect(SceneStringName(visibility_changed), callable_mp(this, &Path2DEditor::_node_visibility_changed));
}
} else {
// The node may have been deleted at this point.
if (node && node->is_connected(SceneStringName(visibility_changed), callable_mp(this, &Path2DEditor::_node_visibility_changed))) {
node->disconnect(SceneStringName(visibility_changed), callable_mp(this, &Path2DEditor::_node_visibility_changed));
}
node = nullptr;
}
canvas_item_editor->update_viewport();
}
void Path2DEditor::_bind_methods() {
ClassDB::bind_method(D_METHOD("_update_toolbar"), &Path2DEditor::_update_toolbar);
ClassDB::bind_method(D_METHOD("_clear_curve_points"), &Path2DEditor::_clear_curve_points);
ClassDB::bind_method(D_METHOD("_restore_curve_points"), &Path2DEditor::_restore_curve_points);
}
void Path2DEditor::_mode_selected(int p_mode) {
if (p_mode == MODE_CREATE) {
curve_create->set_pressed(true);
curve_edit->set_pressed(false);
curve_edit_curve->set_pressed(false);
curve_del->set_pressed(false);
} else if (p_mode == MODE_EDIT) {
curve_create->set_pressed(false);
curve_edit->set_pressed(true);
curve_edit_curve->set_pressed(false);
curve_del->set_pressed(false);
} else if (p_mode == MODE_EDIT_CURVE) {
curve_create->set_pressed(false);
curve_edit->set_pressed(false);
curve_edit_curve->set_pressed(true);
curve_del->set_pressed(false);
} else if (p_mode == MODE_DELETE) {
curve_create->set_pressed(false);
curve_edit->set_pressed(false);
curve_edit_curve->set_pressed(false);
curve_del->set_pressed(true);
} else if (p_mode == MODE_CLOSE) {
if (node->get_curve().is_null()) {
return;
}
if (node->get_curve()->get_point_count() < 3) {
return;
}
Vector2 begin = node->get_curve()->get_point_position(0);
Vector2 end = node->get_curve()->get_point_position(node->get_curve()->get_point_count() - 1);
if (begin.is_equal_approx(end)) {
return;
}
EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
undo_redo->create_action(TTR("Close the Curve"));
undo_redo->add_do_method(node->get_curve().ptr(), "add_point", begin);
undo_redo->add_undo_method(node->get_curve().ptr(), "remove_point", node->get_curve()->get_point_count());
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action();
return;
} else if (p_mode == MODE_CLEAR_POINTS) {
if (node->get_curve().is_null()) {
return;
}
if (node->get_curve()->get_point_count() == 0) {
return;
}
EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
PackedVector2Array points = node->get_curve()->get_points().duplicate();
undo_redo->create_action(TTR("Clear Curve Points"), UndoRedo::MERGE_DISABLE, node);
undo_redo->add_do_method(this, "_clear_curve_points", node);
undo_redo->add_undo_method(this, "_restore_curve_points", node, points);
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action();
return;
}
mode = Mode(p_mode);
}
void Path2DEditor::_handle_option_pressed(int p_option) {
PopupMenu *pm;
pm = handle_menu->get_popup();
switch (p_option) {
case HANDLE_OPTION_ANGLE: {
bool is_checked = pm->is_item_checked(HANDLE_OPTION_ANGLE);
mirror_handle_angle = !is_checked;
pm->set_item_checked(HANDLE_OPTION_ANGLE, mirror_handle_angle);
pm->set_item_disabled(HANDLE_OPTION_LENGTH, !mirror_handle_angle);
} break;
case HANDLE_OPTION_LENGTH: {
bool is_checked = pm->is_item_checked(HANDLE_OPTION_LENGTH);
mirror_handle_length = !is_checked;
pm->set_item_checked(HANDLE_OPTION_LENGTH, mirror_handle_length);
} break;
}
}
void Path2DEditor::_cancel_current_action() {
ERR_FAIL_NULL(node);
Ref<Curve2D> curve = node->get_curve();
ERR_FAIL_COND(curve.is_null());
switch (action) {
case ACTION_MOVING_POINT: {
curve->set_point_position(action_point, moving_from);
} break;
case ACTION_MOVING_NEW_POINT: {
curve->remove_point(curve->get_point_count() - 1);
} break;
case ACTION_MOVING_NEW_POINT_FROM_SPLIT: {
curve->remove_point(action_point);
} break;
case ACTION_MOVING_IN: {
curve->set_point_in(action_point, moving_from);
curve->set_point_out(action_point, mirror_handle_length ? -moving_from : (-moving_from.normalized() * orig_out_length));
} break;
case ACTION_MOVING_OUT: {
curve->set_point_out(action_point, moving_from);
curve->set_point_in(action_point, mirror_handle_length ? -moving_from : (-moving_from.normalized() * orig_in_length));
} break;
default: {
}
}
canvas_item_editor->update_viewport();
action = ACTION_NONE;
}
void Path2DEditor::_create_curve() {
ERR_FAIL_NULL(node);
Ref<Curve2D> new_curve;
new_curve.instantiate();
EditorUndoRedoManager *undo_redo = EditorUndoRedoManager::get_singleton();
undo_redo->create_action(TTR("Create Curve in Path2D"));
undo_redo->add_do_property(node, "curve", new_curve);
undo_redo->add_undo_property(node, "curve", Ref<Curve2D>());
undo_redo->add_do_method(this, "_update_toolbar");
undo_redo->add_undo_method(this, "_update_toolbar");
undo_redo->commit_action();
}
void Path2DEditor::_confirm_clear_points() {
if (!node || node->get_curve().is_null()) {
return;
}
if (node->get_curve()->get_point_count() == 0) {
return;
}
clear_points_dialog->reset_size();
clear_points_dialog->popup_centered();
}
void Path2DEditor::_clear_curve_points(Path2D *p_path2d) {
if (!p_path2d || p_path2d->get_curve().is_null()) {
return;
}
Ref<Curve2D> curve = p_path2d->get_curve();
if (curve->get_point_count() == 0) {
return;
}
curve->clear_points();
if (node == p_path2d) {
_mode_selected(MODE_CREATE);
}
}
void Path2DEditor::_restore_curve_points(Path2D *p_path2d, const PackedVector2Array &p_points) {
if (!p_path2d || p_path2d->get_curve().is_null()) {
return;
}
Ref<Curve2D> curve = p_path2d->get_curve();
if (curve->get_point_count() > 0) {
curve->clear_points();
}
for (int i = 0; i < p_points.size(); i += 3) {
curve->add_point(p_points[i + 2], p_points[i], p_points[i + 1]); // The Curve2D::points pattern is [point_in, point_out, point_position].
}
if (node == p_path2d) {
_mode_selected(MODE_EDIT);
}
}
Path2DEditor::Path2DEditor() {
toolbar = memnew(HBoxContainer);
curve_edit = memnew(Button);
curve_edit->set_theme_type_variation(SceneStringName(FlatButton));
curve_edit->set_toggle_mode(true);
curve_edit->set_pressed(true);
curve_edit->set_focus_mode(Control::FOCUS_ACCESSIBILITY);
curve_edit->set_tooltip_text(TTR("Select Points") + "\n" + TTR("Shift+Drag: Select Control Points") + "\n" + keycode_get_string((Key)KeyModifierMask::CMD_OR_CTRL) + TTR("Click: Add Point") + "\n" + TTR("Left Click: Split Segment (in curve)") + "\n" + TTR("Right Click: Delete Point"));
curve_edit->set_accessibility_name(TTRC("Select Points"));
curve_edit->connect(SceneStringName(pressed), callable_mp(this, &Path2DEditor::_mode_selected).bind(MODE_EDIT));
toolbar->add_child(curve_edit);
curve_edit_curve = memnew(Button);
curve_edit_curve->set_theme_type_variation(SceneStringName(FlatButton));
curve_edit_curve->set_toggle_mode(true);
curve_edit_curve->set_focus_mode(Control::FOCUS_ACCESSIBILITY);
curve_edit_curve->set_tooltip_text(TTR("Select Control Points (Shift+Drag)"));
curve_edit_curve->set_accessibility_name(TTRC("Select Control Points"));
curve_edit_curve->connect(SceneStringName(pressed), callable_mp(this, &Path2DEditor::_mode_selected).bind(MODE_EDIT_CURVE));
toolbar->add_child(curve_edit_curve);
curve_create = memnew(Button);
curve_create->set_theme_type_variation(SceneStringName(FlatButton));
curve_create->set_toggle_mode(true);
curve_create->set_focus_mode(Control::FOCUS_ACCESSIBILITY);
curve_create->set_tooltip_text(TTR("Add Point (in empty space)") + "\n" + TTR("Right Click: Delete Point"));
curve_create->set_accessibility_name(TTRC("Add Point (in empty space)"));
curve_create->connect(SceneStringName(pressed), callable_mp(this, &Path2DEditor::_mode_selected).bind(MODE_CREATE));
toolbar->add_child(curve_create);
curve_del = memnew(Button);
curve_del->set_theme_type_variation(SceneStringName(FlatButton));
curve_del->set_toggle_mode(true);
curve_del->set_focus_mode(Control::FOCUS_ACCESSIBILITY);
curve_del->set_tooltip_text(TTR("Delete Point"));
curve_del->connect(SceneStringName(pressed), callable_mp(this, &Path2DEditor::_mode_selected).bind(MODE_DELETE));
toolbar->add_child(curve_del);
curve_close = memnew(Button);
curve_close->set_theme_type_variation(SceneStringName(FlatButton));
curve_close->set_focus_mode(Control::FOCUS_ACCESSIBILITY);
curve_close->set_tooltip_text(TTR("Close Curve"));
curve_close->connect(SceneStringName(pressed), callable_mp(this, &Path2DEditor::_mode_selected).bind(MODE_CLOSE));
toolbar->add_child(curve_close);
curve_clear_points = memnew(Button);
curve_clear_points->set_theme_type_variation(SceneStringName(FlatButton));
curve_clear_points->set_focus_mode(Control::FOCUS_ACCESSIBILITY);
curve_clear_points->set_tooltip_text(TTR("Clear Points"));
curve_clear_points->connect(SceneStringName(pressed), callable_mp(this, &Path2DEditor::_confirm_clear_points));
toolbar->add_child(curve_clear_points);
clear_points_dialog = memnew(ConfirmationDialog);
clear_points_dialog->set_title(TTR("Please Confirm..."));
clear_points_dialog->set_text(TTR("Remove all curve points?"));
clear_points_dialog->connect(SceneStringName(confirmed), callable_mp(this, &Path2DEditor::_mode_selected).bind(MODE_CLEAR_POINTS));
toolbar->add_child(clear_points_dialog);
handle_menu = memnew(MenuButton);
handle_menu->set_flat(false);
handle_menu->set_theme_type_variation("FlatMenuButton");
handle_menu->set_text(TTR("Options"));
toolbar->add_child(handle_menu);
PopupMenu *menu = handle_menu->get_popup();
menu->add_check_item(TTR("Mirror Handle Angles"));
menu->set_item_checked(HANDLE_OPTION_ANGLE, mirror_handle_angle);
menu->add_check_item(TTR("Mirror Handle Lengths"));
menu->set_item_checked(HANDLE_OPTION_LENGTH, mirror_handle_length);
menu->connect(SceneStringName(id_pressed), callable_mp(this, &Path2DEditor::_handle_option_pressed));
add_child(toolbar);
create_curve_button = memnew(Button);
create_curve_button->set_text(TTR("Create Curve"));
create_curve_button->hide();
add_child(create_curve_button);
create_curve_button->connect(SceneStringName(pressed), callable_mp(this, &Path2DEditor::_create_curve));
ERR_FAIL_NULL(RS::get_singleton());
RenderingServer *rs = RS::get_singleton();
debug_mesh_rid = rs->mesh_create();
{
debug_handle_mesh_rid = rs->mesh_create();
Vector<Vector2> vertex_array;
vertex_array.resize(4);
Vector2 *vertex_array_ptrw = vertex_array.ptrw();
vertex_array_ptrw[0] = Vector2(-1.0, -1.0);
vertex_array_ptrw[1] = Vector2(1.0, -1.0);
vertex_array_ptrw[2] = Vector2(1.0, 1.0);
vertex_array_ptrw[3] = Vector2(-1.0, 1.0);
Vector<Vector2> uv_array;
uv_array.resize(4);
Vector2 *uv_array_ptrw = uv_array.ptrw();
uv_array_ptrw[0] = Vector2(0.0, 0.0);
uv_array_ptrw[1] = Vector2(1.0, 0.0);
uv_array_ptrw[2] = Vector2(1.0, 1.0);
uv_array_ptrw[3] = Vector2(0.0, 1.0);
Vector<int> index_array;
index_array.resize(6);
int *index_array_ptrw = index_array.ptrw();
index_array_ptrw[0] = 0;
index_array_ptrw[1] = 1;
index_array_ptrw[2] = 3;
index_array_ptrw[3] = 1;
index_array_ptrw[4] = 2;
index_array_ptrw[5] = 3;
Array mesh_arrays;
mesh_arrays.resize(RS::ARRAY_MAX);
mesh_arrays[RS::ARRAY_VERTEX] = vertex_array;
mesh_arrays[RS::ARRAY_TEX_UV] = uv_array;
mesh_arrays[RS::ARRAY_INDEX] = index_array;
rs->mesh_add_surface_from_arrays(debug_handle_mesh_rid, RS::PRIMITIVE_TRIANGLES, mesh_arrays, Array(), Dictionary(), RS::ARRAY_FLAG_USE_2D_VERTICES);
debug_handle_curve_multimesh_rid = rs->multimesh_create();
debug_handle_sharp_multimesh_rid = rs->multimesh_create();
debug_handle_smooth_multimesh_rid = rs->multimesh_create();
rs->multimesh_set_mesh(debug_handle_curve_multimesh_rid, debug_handle_mesh_rid);
rs->multimesh_set_mesh(debug_handle_sharp_multimesh_rid, debug_handle_mesh_rid);
rs->multimesh_set_mesh(debug_handle_smooth_multimesh_rid, debug_handle_mesh_rid);
}
}
Path2DEditor::~Path2DEditor() {
ERR_FAIL_NULL(RS::get_singleton());
RS::get_singleton()->free(debug_mesh_rid);
RS::get_singleton()->free(debug_handle_curve_multimesh_rid);
RS::get_singleton()->free(debug_handle_sharp_multimesh_rid);
RS::get_singleton()->free(debug_handle_smooth_multimesh_rid);
RS::get_singleton()->free(debug_handle_mesh_rid);
}
void Path2DEditorPlugin::edit(Object *p_object) {
path2d_editor->edit(Object::cast_to<Node>(p_object));
}
bool Path2DEditorPlugin::handles(Object *p_object) const {
return p_object->is_class("Path2D");
}
void Path2DEditorPlugin::make_visible(bool p_visible) {
if (p_visible) {
path2d_editor->show();
} else {
path2d_editor->hide();
path2d_editor->edit(nullptr);
}
}
Path2DEditorPlugin::Path2DEditorPlugin() {
path2d_editor = memnew(Path2DEditor);
CanvasItemEditor::get_singleton()->add_control_to_menu_panel(path2d_editor);
path2d_editor->hide();
}
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