/*************************************************************************/ /* abstract_polygon_2d_editor.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 "abstract_polygon_2d_editor.h" #include "canvas_item_editor_plugin.h" #include "core/math/geometry_2d.h" #include "core/os/keyboard.h" #include "editor/editor_scale.h" bool AbstractPolygon2DEditor::Vertex::operator==(const AbstractPolygon2DEditor::Vertex &p_vertex) const { return polygon == p_vertex.polygon && vertex == p_vertex.vertex; } bool AbstractPolygon2DEditor::Vertex::operator!=(const AbstractPolygon2DEditor::Vertex &p_vertex) const { return !(*this == p_vertex); } bool AbstractPolygon2DEditor::Vertex::valid() const { return vertex >= 0; } bool AbstractPolygon2DEditor::_is_empty() const { if (!_get_node()) { return true; } const int n = _get_polygon_count(); for (int i = 0; i < n; i++) { Vector<Vector2> vertices = _get_polygon(i); if (vertices.size() != 0) { return false; } } return true; } bool AbstractPolygon2DEditor::_is_line() const { return false; } bool AbstractPolygon2DEditor::_has_uv() const { return false; } int AbstractPolygon2DEditor::_get_polygon_count() const { return 1; } Variant AbstractPolygon2DEditor::_get_polygon(int p_idx) const { return _get_node()->get("polygon"); } void AbstractPolygon2DEditor::_set_polygon(int p_idx, const Variant &p_polygon) const { _get_node()->set("polygon", p_polygon); } void AbstractPolygon2DEditor::_action_set_polygon(int p_idx, const Variant &p_previous, const Variant &p_polygon) { Node2D *node = _get_node(); undo_redo->add_do_method(node, "set_polygon", p_polygon); undo_redo->add_undo_method(node, "set_polygon", p_previous); } Vector2 AbstractPolygon2DEditor::_get_offset(int p_idx) const { return Vector2(0, 0); } void AbstractPolygon2DEditor::_commit_action() { undo_redo->add_do_method(canvas_item_editor, "update_viewport"); undo_redo->add_undo_method(canvas_item_editor, "update_viewport"); undo_redo->commit_action(); } void AbstractPolygon2DEditor::_action_add_polygon(const Variant &p_polygon) { _action_set_polygon(0, p_polygon); } void AbstractPolygon2DEditor::_action_remove_polygon(int p_idx) { _action_set_polygon(p_idx, _get_polygon(p_idx), Vector<Vector2>()); } void AbstractPolygon2DEditor::_action_set_polygon(int p_idx, const Variant &p_polygon) { _action_set_polygon(p_idx, _get_polygon(p_idx), p_polygon); } bool AbstractPolygon2DEditor::_has_resource() const { return true; } void AbstractPolygon2DEditor::_create_resource() { } void AbstractPolygon2DEditor::_menu_option(int p_option) { switch (p_option) { case MODE_CREATE: { mode = MODE_CREATE; button_create->set_pressed(true); button_edit->set_pressed(false); button_delete->set_pressed(false); } break; case MODE_EDIT: { _wip_close(); mode = MODE_EDIT; button_create->set_pressed(false); button_edit->set_pressed(true); button_delete->set_pressed(false); } break; case MODE_DELETE: { _wip_close(); mode = MODE_DELETE; button_create->set_pressed(false); button_edit->set_pressed(false); button_delete->set_pressed(true); } break; } } void AbstractPolygon2DEditor::_notification(int p_what) { switch (p_what) { case NOTIFICATION_READY: { disable_polygon_editing(false, String()); button_create->set_icon(EditorNode::get_singleton()->get_gui_base()->get_theme_icon("CurveCreate", "EditorIcons")); button_edit->set_icon(EditorNode::get_singleton()->get_gui_base()->get_theme_icon("CurveEdit", "EditorIcons")); button_delete->set_icon(EditorNode::get_singleton()->get_gui_base()->get_theme_icon("CurveDelete", "EditorIcons")); button_edit->set_pressed(true); get_tree()->connect("node_removed", callable_mp(this, &AbstractPolygon2DEditor::_node_removed)); create_resource->connect("confirmed", callable_mp(this, &AbstractPolygon2DEditor::_create_resource)); } break; } } void AbstractPolygon2DEditor::_node_removed(Node *p_node) { if (p_node == _get_node()) { edit(nullptr); hide(); canvas_item_editor->update_viewport(); } } void AbstractPolygon2DEditor::_wip_changed() { if (wip_active && _is_line()) { _set_polygon(0, wip); } } void AbstractPolygon2DEditor::_wip_cancel() { wip.clear(); wip_active = false; edited_point = PosVertex(); hover_point = Vertex(); selected_point = Vertex(); canvas_item_editor->update_viewport(); } void AbstractPolygon2DEditor::_wip_close() { if (!wip_active) { return; } if (_is_line()) { _set_polygon(0, wip); } else if (wip.size() >= (_is_line() ? 2 : 3)) { undo_redo->create_action(TTR("Create Polygon")); _action_add_polygon(wip); if (_has_uv()) { undo_redo->add_do_method(_get_node(), "set_uv", Vector<Vector2>()); undo_redo->add_undo_method(_get_node(), "set_uv", _get_node()->get("uv")); } _commit_action(); } else { return; } mode = MODE_EDIT; button_edit->set_pressed(true); button_create->set_pressed(false); button_delete->set_pressed(false); wip.clear(); wip_active = false; edited_point = PosVertex(); hover_point = Vertex(); selected_point = Vertex(); } void AbstractPolygon2DEditor::disable_polygon_editing(bool p_disable, String p_reason) { _polygon_editing_enabled = !p_disable; button_create->set_disabled(p_disable); button_edit->set_disabled(p_disable); button_delete->set_disabled(p_disable); if (p_disable) { button_create->set_tooltip(p_reason); button_edit->set_tooltip(p_reason); button_delete->set_tooltip(p_reason); } else { button_create->set_tooltip(TTR("Create points.")); button_edit->set_tooltip(TTR("Edit points.\nLMB: Move Point\nRMB: Erase Point")); button_delete->set_tooltip(TTR("Erase points.")); } } bool AbstractPolygon2DEditor::forward_gui_input(const Ref<InputEvent> &p_event) { if (!_get_node() || !_polygon_editing_enabled) { return false; } Ref<InputEventMouseButton> mb = p_event; if (!_has_resource()) { if (mb.is_valid() && mb->get_button_index() == 1 && mb->is_pressed()) { create_resource->set_text(String("No polygon resource on this node.\nCreate and assign one?")); create_resource->popup_centered(); } return (mb.is_valid() && mb->get_button_index() == 1); } CanvasItemEditor::Tool tool = CanvasItemEditor::get_singleton()->get_current_tool(); if (tool != CanvasItemEditor::TOOL_SELECT) { return false; } if (mb.is_valid()) { Transform2D xform = canvas_item_editor->get_canvas_transform() * _get_node()->get_global_transform(); Vector2 gpoint = mb->get_position(); Vector2 cpoint = _get_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 (mode == MODE_EDIT || (_is_line() && mode == MODE_CREATE)) { if (mb->get_button_index() == BUTTON_LEFT) { if (mb->is_pressed()) { if (mb->get_control() || mb->get_shift() || mb->get_alt()) { return false; } const PosVertex insert = closest_edge_point(gpoint); if (insert.valid()) { Vector<Vector2> vertices = _get_polygon(insert.polygon); if (vertices.size() < (_is_line() ? 2 : 3)) { vertices.push_back(cpoint); undo_redo->create_action(TTR("Edit Polygon")); selected_point = Vertex(insert.polygon, vertices.size()); _action_set_polygon(insert.polygon, vertices); _commit_action(); return true; } else { Vector<Vector2> vertices2 = _get_polygon(insert.polygon); pre_move_edit = vertices2; edited_point = PosVertex(insert.polygon, insert.vertex + 1, xform.affine_inverse().xform(insert.pos)); vertices2.insert(edited_point.vertex, edited_point.pos); selected_point = Vertex(edited_point.polygon, edited_point.vertex); edge_point = PosVertex(); undo_redo->create_action(TTR("Insert Point")); _action_set_polygon(insert.polygon, vertices2); _commit_action(); return true; } } else { //look for points to move const PosVertex closest = closest_point(gpoint); if (closest.valid()) { pre_move_edit = _get_polygon(closest.polygon); edited_point = PosVertex(closest, xform.affine_inverse().xform(closest.pos)); selected_point = closest; edge_point = PosVertex(); canvas_item_editor->update_viewport(); return true; } else { selected_point = Vertex(); } } } else { if (edited_point.valid()) { //apply Vector<Vector2> vertices = _get_polygon(edited_point.polygon); ERR_FAIL_INDEX_V(edited_point.vertex, vertices.size(), false); vertices.write[edited_point.vertex] = edited_point.pos - _get_offset(edited_point.polygon); undo_redo->create_action(TTR("Edit Polygon")); _action_set_polygon(edited_point.polygon, pre_move_edit, vertices); _commit_action(); edited_point = PosVertex(); return true; } } } else if (mb->get_button_index() == BUTTON_RIGHT && mb->is_pressed() && !edited_point.valid()) { const PosVertex closest = closest_point(gpoint); if (closest.valid()) { remove_point(closest); return true; } } } else if (mode == MODE_DELETE) { if (mb->get_button_index() == BUTTON_LEFT && mb->is_pressed()) { const PosVertex closest = closest_point(gpoint); if (closest.valid()) { remove_point(closest); return true; } } } if (mode == MODE_CREATE) { if (mb->get_button_index() == BUTTON_LEFT && mb->is_pressed()) { if (_is_line()) { // for lines, we don't have a wip mode, and we can undo each single add point. Vector<Vector2> vertices = _get_polygon(0); vertices.push_back(cpoint); undo_redo->create_action(TTR("Insert Point")); _action_set_polygon(0, vertices); _commit_action(); return true; } else if (!wip_active) { wip.clear(); wip.push_back(cpoint); wip_active = true; _wip_changed(); edited_point = PosVertex(-1, 1, cpoint); canvas_item_editor->update_viewport(); hover_point = Vertex(); selected_point = Vertex(0); edge_point = PosVertex(); return true; } else { const real_t grab_threshold = EDITOR_GET("editors/poly_editor/point_grab_radius"); if (!_is_line() && wip.size() > 1 && xform.xform(wip[0]).distance_to(xform.xform(cpoint)) < grab_threshold) { //wip closed _wip_close(); return true; } else { //add wip point wip.push_back(cpoint); _wip_changed(); edited_point = PosVertex(-1, wip.size(), cpoint); selected_point = Vertex(wip.size() - 1); canvas_item_editor->update_viewport(); return true; } } } else if (mb->get_button_index() == BUTTON_RIGHT && mb->is_pressed() && wip_active) { _wip_cancel(); } } } Ref<InputEventMouseMotion> mm = p_event; if (mm.is_valid()) { Vector2 gpoint = mm->get_position(); if (edited_point.valid() && (wip_active || (mm->get_button_mask() & BUTTON_MASK_LEFT))) { Vector2 cpoint = _get_node()->get_global_transform().affine_inverse().xform(canvas_item_editor->snap_point(canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint))); //Move the point in a single axis. Should only work when editing a polygon and while holding shift. if (mode == MODE_EDIT && mm->get_shift()) { Vector2 old_point = pre_move_edit.get(selected_point.vertex); if (ABS(cpoint.x - old_point.x) > ABS(cpoint.y - old_point.y)) { cpoint.y = old_point.y; } else { cpoint.x = old_point.x; } } edited_point = PosVertex(edited_point, cpoint); if (!wip_active) { Vector<Vector2> vertices = _get_polygon(edited_point.polygon); ERR_FAIL_INDEX_V(edited_point.vertex, vertices.size(), false); vertices.write[edited_point.vertex] = cpoint - _get_offset(edited_point.polygon); _set_polygon(edited_point.polygon, vertices); } canvas_item_editor->update_viewport(); } else if (mode == MODE_EDIT || (_is_line() && mode == MODE_CREATE)) { const PosVertex onEdgeVertex = closest_edge_point(gpoint); if (onEdgeVertex.valid()) { hover_point = Vertex(); edge_point = onEdgeVertex; canvas_item_editor->update_viewport(); } else { if (edge_point.valid()) { edge_point = PosVertex(); canvas_item_editor->update_viewport(); } const PosVertex new_hover_point = closest_point(gpoint); if (hover_point != new_hover_point) { hover_point = new_hover_point; canvas_item_editor->update_viewport(); } } } } Ref<InputEventKey> k = p_event; if (k.is_valid() && k->is_pressed()) { if (k->get_keycode() == KEY_DELETE || k->get_keycode() == KEY_BACKSPACE) { if (wip_active && selected_point.polygon == -1) { if (wip.size() > selected_point.vertex) { wip.remove(selected_point.vertex); _wip_changed(); selected_point = wip.size() - 1; canvas_item_editor->update_viewport(); return true; } } else { const Vertex active_point = get_active_point(); if (active_point.valid()) { remove_point(active_point); return true; } } } else if (wip_active && k->get_keycode() == KEY_ENTER) { _wip_close(); } else if (wip_active && k->get_keycode() == KEY_ESCAPE) { _wip_cancel(); } } return false; } void AbstractPolygon2DEditor::forward_canvas_draw_over_viewport(Control *p_overlay) { if (!_get_node()) { return; } Transform2D xform = canvas_item_editor->get_canvas_transform() * _get_node()->get_global_transform(); // All polygon points are sharp, so use the sharp handle icon const Ref<Texture2D> handle = get_theme_icon("EditorPathSharpHandle", "EditorIcons"); const Vertex active_point = get_active_point(); const int n_polygons = _get_polygon_count(); const bool is_closed = !_is_line(); for (int j = -1; j < n_polygons; j++) { if (wip_active && wip_destructive && j != -1) { continue; } Vector<Vector2> points; Vector2 offset; if (wip_active && j == edited_point.polygon) { points = Variant(wip); offset = Vector2(0, 0); } else { if (j == -1) { continue; } points = _get_polygon(j); offset = _get_offset(j); } if (!wip_active && j == edited_point.polygon && EDITOR_GET("editors/poly_editor/show_previous_outline")) { const Color col = Color(0.5, 0.5, 0.5); // FIXME polygon->get_outline_color(); const int n = pre_move_edit.size(); for (int i = 0; i < n - (is_closed ? 0 : 1); i++) { Vector2 p, p2; p = pre_move_edit[i] + offset; p2 = pre_move_edit[(i + 1) % n] + offset; Vector2 point = xform.xform(p); Vector2 next_point = xform.xform(p2); p_overlay->draw_line(point, next_point, col, Math::round(2 * EDSCALE)); } } const int n_points = points.size(); const Color col = Color(1, 0.3, 0.1, 0.8); for (int i = 0; i < n_points; i++) { const Vertex vertex(j, i); const Vector2 p = (vertex == edited_point) ? edited_point.pos : (points[i] + offset); const Vector2 point = xform.xform(p); if (is_closed || i < n_points - 1) { Vector2 p2; if (j == edited_point.polygon && ((wip_active && i == n_points - 1) || (((i + 1) % n_points) == edited_point.vertex))) { p2 = edited_point.pos; } else { p2 = points[(i + 1) % n_points] + offset; } const Vector2 next_point = xform.xform(p2); p_overlay->draw_line(point, next_point, col, Math::round(2 * EDSCALE)); } } for (int i = 0; i < n_points; i++) { const Vertex vertex(j, i); const Vector2 p = (vertex == edited_point) ? edited_point.pos : (points[i] + offset); const Vector2 point = xform.xform(p); const Color modulate = vertex == active_point ? Color(0.5, 1, 2) : Color(1, 1, 1); p_overlay->draw_texture(handle, point - handle->get_size() * 0.5, modulate); if (vertex == hover_point) { Ref<Font> font = get_theme_font("font", "Label"); int font_size = get_theme_font_size("font_size", "Label"); String num = String::num(vertex.vertex); Size2 num_size = font->get_string_size(num, font_size); p_overlay->draw_string(font, point - num_size * 0.5, num, HALIGN_LEFT, -1, font_size, Color(1.0, 1.0, 1.0, 0.5)); } } } if (edge_point.valid()) { Ref<Texture2D> add_handle = get_theme_icon("EditorHandleAdd", "EditorIcons"); p_overlay->draw_texture(add_handle, edge_point.pos - add_handle->get_size() * 0.5); } } void AbstractPolygon2DEditor::edit(Node *p_polygon) { if (!canvas_item_editor) { canvas_item_editor = CanvasItemEditor::get_singleton(); } if (p_polygon) { _set_node(p_polygon); // Enable the pencil tool if the polygon is empty. if (_is_empty()) { _menu_option(MODE_CREATE); } else { _menu_option(MODE_EDIT); } wip.clear(); wip_active = false; edited_point = PosVertex(); hover_point = Vertex(); selected_point = Vertex(); canvas_item_editor->update_viewport(); } else { _set_node(nullptr); } } void AbstractPolygon2DEditor::_bind_methods() { } void AbstractPolygon2DEditor::remove_point(const Vertex &p_vertex) { Vector<Vector2> vertices = _get_polygon(p_vertex.polygon); if (vertices.size() > (_is_line() ? 2 : 3)) { vertices.remove(p_vertex.vertex); undo_redo->create_action(TTR("Edit Polygon (Remove Point)")); _action_set_polygon(p_vertex.polygon, vertices); _commit_action(); } else { undo_redo->create_action(TTR("Remove Polygon And Point")); _action_remove_polygon(p_vertex.polygon); _commit_action(); } if (_is_empty()) { _menu_option(MODE_CREATE); } hover_point = Vertex(); if (selected_point == p_vertex) { selected_point = Vertex(); } } AbstractPolygon2DEditor::Vertex AbstractPolygon2DEditor::get_active_point() const { return hover_point.valid() ? hover_point : selected_point; } AbstractPolygon2DEditor::PosVertex AbstractPolygon2DEditor::closest_point(const Vector2 &p_pos) const { const real_t grab_threshold = EDITOR_GET("editors/poly_editor/point_grab_radius"); const int n_polygons = _get_polygon_count(); const Transform2D xform = canvas_item_editor->get_canvas_transform() * _get_node()->get_global_transform(); PosVertex closest; real_t closest_dist = 1e10; for (int j = 0; j < n_polygons; j++) { Vector<Vector2> points = _get_polygon(j); const Vector2 offset = _get_offset(j); const int n_points = points.size(); for (int i = 0; i < n_points; i++) { Vector2 cp = xform.xform(points[i] + offset); real_t d = cp.distance_to(p_pos); if (d < closest_dist && d < grab_threshold) { closest_dist = d; closest = PosVertex(j, i, cp); } } } return closest; } AbstractPolygon2DEditor::PosVertex AbstractPolygon2DEditor::closest_edge_point(const Vector2 &p_pos) const { const real_t grab_threshold = EDITOR_GET("editors/poly_editor/point_grab_radius"); const real_t eps = grab_threshold * 2; const real_t eps2 = eps * eps; const int n_polygons = _get_polygon_count(); const Transform2D xform = canvas_item_editor->get_canvas_transform() * _get_node()->get_global_transform(); PosVertex closest; real_t closest_dist = 1e10; for (int j = 0; j < n_polygons; j++) { Vector<Vector2> points = _get_polygon(j); const Vector2 offset = _get_offset(j); const int n_points = points.size(); const int n_segments = n_points - (_is_line() ? 1 : 0); for (int i = 0; i < n_segments; i++) { Vector2 segment[2] = { xform.xform(points[i] + offset), xform.xform(points[(i + 1) % n_points] + offset) }; Vector2 cp = Geometry2D::get_closest_point_to_segment(p_pos, segment); if (cp.distance_squared_to(segment[0]) < eps2 || cp.distance_squared_to(segment[1]) < eps2) { continue; //not valid to reuse point } real_t d = cp.distance_to(p_pos); if (d < closest_dist && d < grab_threshold) { closest_dist = d; closest = PosVertex(j, i, cp); } } } return closest; } AbstractPolygon2DEditor::AbstractPolygon2DEditor(EditorNode *p_editor, bool p_wip_destructive) { canvas_item_editor = nullptr; editor = p_editor; undo_redo = EditorNode::get_undo_redo(); wip_active = false; edited_point = PosVertex(); wip_destructive = p_wip_destructive; hover_point = Vertex(); selected_point = Vertex(); edge_point = PosVertex(); add_child(memnew(VSeparator)); button_create = memnew(Button); button_create->set_flat(true); add_child(button_create); button_create->connect("pressed", callable_mp(this, &AbstractPolygon2DEditor::_menu_option), varray(MODE_CREATE)); button_create->set_toggle_mode(true); button_edit = memnew(Button); button_edit->set_flat(true); add_child(button_edit); button_edit->connect("pressed", callable_mp(this, &AbstractPolygon2DEditor::_menu_option), varray(MODE_EDIT)); button_edit->set_toggle_mode(true); button_delete = memnew(Button); button_delete->set_flat(true); add_child(button_delete); button_delete->connect("pressed", callable_mp(this, &AbstractPolygon2DEditor::_menu_option), varray(MODE_DELETE)); button_delete->set_toggle_mode(true); create_resource = memnew(ConfirmationDialog); add_child(create_resource); create_resource->get_ok_button()->set_text(TTR("Create")); mode = MODE_EDIT; } void AbstractPolygon2DEditorPlugin::edit(Object *p_object) { polygon_editor->edit(Object::cast_to<Node>(p_object)); } bool AbstractPolygon2DEditorPlugin::handles(Object *p_object) const { return p_object->is_class(klass); } void AbstractPolygon2DEditorPlugin::make_visible(bool p_visible) { if (p_visible) { polygon_editor->show(); } else { polygon_editor->hide(); polygon_editor->edit(nullptr); } } AbstractPolygon2DEditorPlugin::AbstractPolygon2DEditorPlugin(EditorNode *p_node, AbstractPolygon2DEditor *p_polygon_editor, String p_class) : polygon_editor(p_polygon_editor), editor(p_node), klass(p_class) { CanvasItemEditor::get_singleton()->add_control_to_menu_panel(polygon_editor); polygon_editor->hide(); } AbstractPolygon2DEditorPlugin::~AbstractPolygon2DEditorPlugin() { }