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godot/editor/plugins/path_2d_editor_plugin.cpp
Rémi Verschelde b16c309f82 Update copyright statements to 2019 
Happy new year to the wonderful Godot community!
2019-01-01 12:58:10 +01:00

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/*************************************************************************/
/* path_2d_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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 "path_2d_editor_plugin.h"
#include "canvas_item_editor_plugin.h"
#include "core/os/file_access.h"
#include "core/os/keyboard.h"
#include "editor/editor_settings.h"
void Path2DEditor::_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"));
//set_pressed_button(button_edit);
//button_edit->set_pressed(true);
} break;
case NOTIFICATION_PHYSICS_PROCESS: {
} break;
}
}
void Path2DEditor::_node_removed(Node *p_node) {
if (p_node == node) {
node = NULL;
hide();
}
}
bool Path2DEditor::forward_gui_input(const Ref<InputEvent> &p_event) {
if (!node)
return false;
if (!node->is_visible_in_tree())
return false;
if (!node->get_curve().is_valid())
return false;
real_t grab_threshold = EDITOR_GET("editors/poly_editor/point_grab_radius");
Ref<InputEventMouseButton> mb = p_event;
if (mb.is_valid()) {
Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
Vector2 gpoint = mb->get_position();
Vector2 cpoint = node->get_global_transform().affine_inverse().xform(canvas_item_editor->snap_point(canvas_item_editor->get_canvas_transform().affine_inverse().xform(mb->get_position())));
if (mb->is_pressed() && action == ACTION_NONE) {
Ref<Curve2D> curve = node->get_curve();
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() == BUTTON_LEFT) {
if (mode == MODE_EDIT && !mb->get_shift() && 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) {
// 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();
return true;
} else 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();
return true;
}
}
}
// Check for point deletion.
if ((mb->get_button_index() == BUTTON_RIGHT && mode == MODE_EDIT) || (mb->get_button_index() == BUTTON_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;
}
}
}
}
// Check for point creation.
if (mb->is_pressed() && mb->get_button_index() == BUTTON_LEFT && ((mb->get_command() && mode == MODE_EDIT) || mode == MODE_CREATE)) {
Ref<Curve2D> curve = node->get_curve();
undo_redo->create_action(TTR("Add Point to Curve"));
undo_redo->add_do_method(curve.ptr(), "add_point", cpoint);
undo_redo->add_undo_method(curve.ptr(), "remove_point", 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();
action = ACTION_MOVING_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() == BUTTON_LEFT && mode == MODE_EDIT && on_edge == true) {
Vector2 gpoint = mb->get_position();
Ref<Curve2D> curve = node->get_curve();
int insertion_point = -1;
float mbLength = curve->get_closest_offset(xform.affine_inverse().xform(gpoint));
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;
undo_redo->create_action(TTR("Split Curve"));
undo_redo->add_do_method(curve.ptr(), "add_point", xform.affine_inverse().xform(gpoint), Vector2(0, 0), Vector2(0, 0), insertion_point + 1);
undo_redo->add_undo_method(curve.ptr(), "remove_point", insertion_point + 1);
undo_redo->add_do_method(canvas_item_editor, "update_viewport");
undo_redo->add_undo_method(canvas_item_editor, "update_viewport");
undo_redo->commit_action();
action = ACTION_MOVING_POINT;
action_point = insertion_point + 1;
moving_from = curve->get_point_position(action_point);
moving_screen_from = gpoint;
canvas_item_editor->update_viewport();
on_edge = false;
return true;
}
// Check for point movement completion.
if (!mb->is_pressed() && mb->get_button_index() == BUTTON_LEFT && action != ACTION_NONE) {
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: {
undo_redo->create_action(TTR("Move Point in Curve"));
undo_redo->add_do_method(curve.ptr(), "set_point_position", action_point, cpoint);
undo_redo->add_undo_method(curve.ptr(), "set_point_position", action_point, moving_from);
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_IN: {
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: {
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()) {
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_global_transform();
Vector2 gpoint = mm->get_position();
Ref<Curve2D> curve = node->get_curve();
if (curve == 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_global_transform();
Vector2 gpoint = mm->get_position();
Vector2 cpoint = node->get_global_transform().affine_inverse().xform(canvas_item_editor->snap_point(canvas_item_editor->get_canvas_transform().affine_inverse().xform(mm->get_position())));
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: {
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)
return;
if (!node->is_visible_in_tree())
return;
if (!node->get_curve().is_valid())
return;
Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
Ref<Texture> handle = get_icon("EditorHandle", "EditorIcons");
Size2 handle_size = handle->get_size();
Ref<Curve2D> curve = node->get_curve();
int len = curve->get_point_count();
Control *vpc = canvas_item_editor->get_viewport_control();
for (int i = 0; i < len; i++) {
Vector2 point = xform.xform(curve->get_point_position(i));
vpc->draw_texture_rect(handle, Rect2(point - handle_size * 0.5, handle_size), false, Color(1, 1, 1, 1));
if (i < len - 1) {
Vector2 pointout = xform.xform(curve->get_point_position(i) + curve->get_point_out(i));
vpc->draw_line(point, pointout, Color(0.5, 0.5, 1.0, 0.8), 1.0);
vpc->draw_texture_rect(handle, Rect2(pointout - handle_size * 0.5, handle_size), false, Color(1, 0.5, 1, 0.3));
}
if (i > 0) {
Vector2 pointin = xform.xform(curve->get_point_position(i) + curve->get_point_in(i));
vpc->draw_line(point, pointin, Color(0.5, 0.5, 1.0, 0.8), 1.0);
vpc->draw_texture_rect(handle, Rect2(pointin - handle_size * 0.5, handle_size), false, Color(1, 0.5, 1, 0.3));
}
}
if (on_edge) {
Ref<Texture> add_handle = get_icon("EditorHandleAdd", "EditorIcons");
p_overlay->draw_texture(add_handle, edge_point - add_handle->get_size() * 0.5);
}
}
void Path2DEditor::_node_visibility_changed() {
if (!node)
return;
canvas_item_editor->update_viewport();
}
void Path2DEditor::edit(Node *p_path2d) {
if (!canvas_item_editor) {
canvas_item_editor = CanvasItemEditor::get_singleton();
}
if (p_path2d) {
node = Object::cast_to<Path2D>(p_path2d);
if (!node->is_connected("visibility_changed", this, "_node_visibility_changed"))
node->connect("visibility_changed", this, "_node_visibility_changed");
} else {
// node may have been deleted at this point
if (node && node->is_connected("visibility_changed", this, "_node_visibility_changed"))
node->disconnect("visibility_changed", this, "_node_visibility_changed");
node = NULL;
}
}
void Path2DEditor::_bind_methods() {
//ClassDB::bind_method(D_METHOD("_menu_option"),&Path2DEditor::_menu_option);
ClassDB::bind_method(D_METHOD("_node_visibility_changed"), &Path2DEditor::_node_visibility_changed);
ClassDB::bind_method(D_METHOD("_mode_selected"), &Path2DEditor::_mode_selected);
ClassDB::bind_method(D_METHOD("_handle_option_pressed"), &Path2DEditor::_handle_option_pressed);
}
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 == ACTION_CLOSE) {
//?
if (!node->get_curve().is_valid())
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.distance_to(end) < CMP_EPSILON)
return;
undo_redo->create_action(TTR("Remove Point from 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;
}
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;
}
}
Path2DEditor::Path2DEditor(EditorNode *p_editor) {
canvas_item_editor = NULL;
editor = p_editor;
undo_redo = editor->get_undo_redo();
mirror_handle_angle = true;
mirror_handle_length = true;
on_edge = false;
mode = MODE_EDIT;
action = ACTION_NONE;
base_hb = memnew(HBoxContainer);
CanvasItemEditor::get_singleton()->add_control_to_menu_panel(base_hb);
sep = memnew(VSeparator);
base_hb->add_child(sep);
curve_edit = memnew(ToolButton);
curve_edit->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveEdit", "EditorIcons"));
curve_edit->set_toggle_mode(true);
curve_edit->set_focus_mode(Control::FOCUS_NONE);
curve_edit->set_tooltip(TTR("Select Points") + "\n" + TTR("Shift+Drag: Select Control Points") + "\n" + keycode_get_string(KEY_MASK_CMD) + TTR("Click: Add Point") + "\n" + TTR("Left Click: Split Segment (in curve)") + "\n" + TTR("Right Click: Delete Point"));
curve_edit->connect("pressed", this, "_mode_selected", varray(MODE_EDIT));
base_hb->add_child(curve_edit);
curve_edit_curve = memnew(ToolButton);
curve_edit_curve->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveCurve", "EditorIcons"));
curve_edit_curve->set_toggle_mode(true);
curve_edit_curve->set_focus_mode(Control::FOCUS_NONE);
curve_edit_curve->set_tooltip(TTR("Select Control Points (Shift+Drag)"));
curve_edit_curve->connect("pressed", this, "_mode_selected", varray(MODE_EDIT_CURVE));
base_hb->add_child(curve_edit_curve);
curve_create = memnew(ToolButton);
curve_create->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveCreate", "EditorIcons"));
curve_create->set_toggle_mode(true);
curve_create->set_focus_mode(Control::FOCUS_NONE);
curve_create->set_tooltip(TTR("Add Point (in empty space)"));
curve_create->connect("pressed", this, "_mode_selected", varray(MODE_CREATE));
base_hb->add_child(curve_create);
curve_del = memnew(ToolButton);
curve_del->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveDelete", "EditorIcons"));
curve_del->set_toggle_mode(true);
curve_del->set_focus_mode(Control::FOCUS_NONE);
curve_del->set_tooltip(TTR("Delete Point"));
curve_del->connect("pressed", this, "_mode_selected", varray(MODE_DELETE));
base_hb->add_child(curve_del);
curve_close = memnew(ToolButton);
curve_close->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveClose", "EditorIcons"));
curve_close->set_focus_mode(Control::FOCUS_NONE);
curve_close->set_tooltip(TTR("Close Curve"));
curve_close->connect("pressed", this, "_mode_selected", varray(ACTION_CLOSE));
base_hb->add_child(curve_close);
PopupMenu *menu;
handle_menu = memnew(MenuButton);
handle_menu->set_text(TTR("Options"));
base_hb->add_child(handle_menu);
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("id_pressed", this, "_handle_option_pressed");
base_hb->hide();
curve_edit->set_pressed(true);
}
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();
path2d_editor->base_hb->show();
} else {
path2d_editor->hide();
path2d_editor->base_hb->hide();
path2d_editor->edit(NULL);
}
}
Path2DEditorPlugin::Path2DEditorPlugin(EditorNode *p_node) {
editor = p_node;
path2d_editor = memnew(Path2DEditor(p_node));
CanvasItemEditor::get_singleton()->add_control_to_menu_panel(path2d_editor);
path2d_editor->hide();
}
Path2DEditorPlugin::~Path2DEditorPlugin() {
}
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