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Added Line2D node that draws a polygon-based line
It supports unlimited width, color gradient, texture and some geometry options for joints and caps. Also transparency without artifacts (provided that line joints aren't too sharp).
This commit is contained in:
Marc Gilleron
283
tools/editor/plugins/line_2d_editor_plugin.cpp
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283
tools/editor/plugins/line_2d_editor_plugin.cpp
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#include "line_2d_editor_plugin.h"
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#include "canvas_item_editor_plugin.h"
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#include "os/file_access.h"
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#include "tools/editor/editor_settings.h"
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#include "os/keyboard.h"
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//----------------------------------------------------------------------------
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// Line2DEditor
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//----------------------------------------------------------------------------
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void Line2DEditor::_node_removed(Node *p_node) {
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if(p_node == node) {
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node=NULL;
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hide();
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}
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}
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void Line2DEditor::_notification(int p_what) {
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switch(p_what) {
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case NOTIFICATION_VISIBILITY_CHANGED:
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// This widget is not a child but should have the same visibility state
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base_hb->set_visible(is_visible());
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break;
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}
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}
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Vector2 Line2DEditor::mouse_to_local_pos(Vector2 gpoint, bool alt) {
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Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
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return !alt? canvas_item_editor->snap_point(xform.affine_inverse().xform(gpoint))
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: node->get_global_transform().affine_inverse().xform(
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canvas_item_editor->snap_point(
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canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint)) );
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}
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int Line2DEditor::get_point_index_at(Vector2 gpos) {
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ERR_FAIL_COND_V(node == 0, -1);
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real_t grab_treshold = EDITOR_DEF("poly_editor/point_grab_radius", 8);
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Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
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for(int i = 0; i < node->get_point_count(); ++i) {
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Point2 p = xform.xform( node->get_point_pos(i) );
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if(gpos.distance_to(p) < grab_treshold) {
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return i;
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}
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}
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return -1;
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}
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bool Line2DEditor::forward_input_event(const InputEvent& p_event) {
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if (!node)
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return false;
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if (!node->is_visible())
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return false;
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switch(p_event.type) {
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case InputEvent::MOUSE_BUTTON: {
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const InputEventMouseButton &mb = p_event.mouse_button;
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Vector2 gpoint = Point2(mb.x,mb.y);
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Vector2 cpoint = mouse_to_local_pos(gpoint, mb.mod.alt);
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if(mb.pressed && _dragging == false) {
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int i = get_point_index_at(gpoint);
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if(i != -1) {
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if (mb.button_index == BUTTON_LEFT && !mb.mod.shift && mode == MODE_EDIT) {
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_dragging = true;
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action_point = i;
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moving_from = node->get_point_pos(i);
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moving_screen_from = gpoint;
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}
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else if((mb.button_index == BUTTON_RIGHT && mode == MODE_EDIT) || (mb.button_index == BUTTON_LEFT && mode == MODE_DELETE)) {
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undo_redo->create_action(TTR("Remove Point from Line2D"));
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undo_redo->add_do_method(node, "remove_point", i);
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undo_redo->add_undo_method(node, "add_point", node->get_point_pos(i), i);
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undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
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undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
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undo_redo->commit_action();
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}
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}
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return true;
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}
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if(mb.pressed && mb.button_index == BUTTON_LEFT && ((mb.mod.command && mode == MODE_EDIT) || mode == MODE_CREATE)) {
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undo_redo->create_action(TTR("Add Point to Line2D"));
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undo_redo->add_do_method(node, "add_point", cpoint);
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undo_redo->add_undo_method(node, "remove_point", node->get_point_count());
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undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
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undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
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undo_redo->commit_action();
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_dragging = true;
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action_point = node->get_point_count()-1;
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moving_from = node->get_point_pos(action_point);
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moving_screen_from = gpoint;
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canvas_item_editor->get_viewport_control()->update();
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return true;
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}
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if(!mb.pressed && mb.button_index == BUTTON_LEFT && _dragging) {
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undo_redo->create_action(TTR("Move Point in Line2D"));
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undo_redo->add_do_method(node, "set_point_pos", action_point, cpoint);
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undo_redo->add_undo_method(node, "set_point_pos", action_point, moving_from);
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undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
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undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
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undo_redo->commit_action();
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_dragging = false;
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return true;
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}
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}
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break;
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case InputEvent::MOUSE_MOTION: {
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if (_dragging) {
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const InputEventMouseMotion &mm = p_event.mouse_motion;
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Vector2 cpoint = mouse_to_local_pos(Vector2(mm.x, mm.y), mm.mod.alt);
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node->set_point_pos(action_point,cpoint);
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canvas_item_editor->get_viewport_control()->update();
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return true;
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}
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}
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break;
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}
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return false;
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}
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void Line2DEditor::_canvas_draw() {
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if (!node)
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return;
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if (!node->is_visible())
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return;
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Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
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Ref<Texture> handle = get_icon("EditorHandle", "EditorIcons");
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Size2 handle_size = handle->get_size();
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int len = node->get_point_count();
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Control *vpc = canvas_item_editor->get_viewport_control();
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for(int i=0; i < len; ++i) {
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Vector2 point = xform.xform(node->get_point_pos(i));
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vpc->draw_texture_rect(handle, Rect2(point - handle_size * 0.5, handle_size), false);
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}
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}
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void Line2DEditor::_node_visibility_changed() {
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if (!node)
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return;
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canvas_item_editor->get_viewport_control()->update();
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}
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void Line2DEditor::edit(Node *p_line2d) {
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if (!canvas_item_editor)
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canvas_item_editor = CanvasItemEditor::get_singleton();
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if (p_line2d) {
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node = p_line2d->cast_to<Line2D>();
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if (!canvas_item_editor->get_viewport_control()->is_connected("draw", this, "_canvas_draw"))
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canvas_item_editor->get_viewport_control()->connect("draw", this, "_canvas_draw");
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if (!node->is_connected("visibility_changed", this, "_node_visibility_changed"))
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node->connect("visibility_changed", this, "_node_visibility_changed");
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}
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else {
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if (canvas_item_editor->get_viewport_control()->is_connected("draw", this, "_canvas_draw"))
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canvas_item_editor->get_viewport_control()->disconnect("draw", this, "_canvas_draw");
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// node may have been deleted at this point
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if (node && node->is_connected("visibility_changed", this, "_node_visibility_changed"))
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node->disconnect("visibility_changed", this, "_node_visibility_changed");
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node = NULL;
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}
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}
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void Line2DEditor::_bind_methods() {
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ClassDB::bind_method(_MD("_canvas_draw"), &Line2DEditor::_canvas_draw);
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ClassDB::bind_method(_MD("_node_visibility_changed"), &Line2DEditor::_node_visibility_changed);
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ClassDB::bind_method(_MD("_mode_selected"), &Line2DEditor::_mode_selected);
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}
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void Line2DEditor::_mode_selected(int p_mode) {
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for(unsigned int i = 0; i < _MODE_COUNT; ++i) {
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toolbar_buttons[i]->set_pressed(i == p_mode);
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}
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mode = Mode(p_mode);
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}
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Line2DEditor::Line2DEditor(EditorNode *p_editor) {
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canvas_item_editor = NULL;
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editor = p_editor;
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undo_redo = editor->get_undo_redo();
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_dragging = false;
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base_hb = memnew( HBoxContainer );
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CanvasItemEditor::get_singleton()->add_control_to_menu_panel(base_hb);
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sep = memnew( VSeparator);
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base_hb->add_child(sep);
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{
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ToolButton * b = memnew(ToolButton);
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b->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveEdit", "EditorIcons"));
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b->set_toggle_mode(true);
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b->set_focus_mode(Control::FOCUS_NONE);
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b->set_tooltip(
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TTR("Select Points")+"\n"
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+ TTR("Shift+Drag: Select Control Points")+"\n"
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+ keycode_get_string(KEY_MASK_CMD)
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+ TTR("Click: Add Point")+"\n"
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+ TTR("Right Click: Delete Point"));
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b->connect("pressed", this, "_mode_selected", varray(MODE_EDIT));
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toolbar_buttons[MODE_EDIT] = b;
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base_hb->add_child(b);
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}
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{
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ToolButton * b = memnew(ToolButton);
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b->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveCreate", "EditorIcons"));
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b->set_toggle_mode(true);
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b->set_focus_mode(Control::FOCUS_NONE);
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b->set_tooltip(TTR("Add Point (in empty space)")+"\n"+TTR("Split Segment (in line)"));
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b->connect("pressed", this, "_mode_selected", varray(MODE_CREATE));
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toolbar_buttons[MODE_CREATE] = b;
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base_hb->add_child(b);
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}
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{
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ToolButton * b = memnew( ToolButton );
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b->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("CurveDelete", "EditorIcons"));
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b->set_toggle_mode(true);
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b->set_focus_mode(Control::FOCUS_NONE);
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b->set_tooltip(TTR("Delete Point"));
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b->connect("pressed", this, "_mode_selected", varray(MODE_DELETE));
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toolbar_buttons[MODE_DELETE] = b;
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base_hb->add_child(b);
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}
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base_hb->hide();
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hide();
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_mode_selected(MODE_CREATE);
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}
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//----------------------------------------------------------------------------
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// Line2DEditorPlugin
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//----------------------------------------------------------------------------
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void Line2DEditorPlugin::edit(Object *p_object) {
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line2d_editor->edit(p_object->cast_to<Node>());
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}
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bool Line2DEditorPlugin::handles(Object *p_object) const {
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return p_object->is_class("Line2D");
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}
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void Line2DEditorPlugin::make_visible(bool p_visible) {
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line2d_editor->set_visible(p_visible);
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if(p_visible == false)
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line2d_editor->edit(NULL);
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}
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Line2DEditorPlugin::Line2DEditorPlugin(EditorNode *p_node) {
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editor=p_node;
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line2d_editor = memnew( Line2DEditor(p_node) );
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CanvasItemEditor::get_singleton()->add_control_to_menu_panel(line2d_editor);
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line2d_editor->hide();
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}
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