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godot/editor/plugins/light_occluder_2d_editor_plugin.cpp
Pedro J. Estébanez 3f31925b18 Universalize draw-over API for EditorPlugins 
- Now it is usable from both `CanvasItem` and `Spatial` editors.
- `EditorPlugin` API changes:
 - `forward_draw_over_canvas()` becomes `forward_draw_over_viewport()`.
 - `update_canvas()` becomes `update_overlays()`, which now triggers the update of every overlay on top of any 2D or 3D viewports present. Also now it returns the number of such viewports, which is useful whenever you need to know the number of draw-over calls you'll get.
 - New: `[set/is]_force_draw_over_forwarding_enabled()` to force overlaying regardless it handles the current object type, in a similar fashion as `[set/is]_input_event_forwarding_always_enabled`. This kind of overlay is also on top of those for regular handled node types.
 - New: `forward_force_draw_over_canvas()`, which is the callback that gets called for plugins that enable forced overlaying.
2017-11-24 21:24:15 +01:00

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/*************************************************************************/
/* light_occluder_2d_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 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 "light_occluder_2d_editor_plugin.h"
#include "canvas_item_editor_plugin.h"
#include "editor/editor_settings.h"
#include "os/file_access.h"
void LightOccluder2DEditor::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_READY: {
button_create->set_icon(get_icon("Edit", "EditorIcons"));
button_edit->set_icon(get_icon("MovePoint", "EditorIcons"));
button_edit->set_pressed(true);
get_tree()->connect("node_removed", this, "_node_removed");
create_poly->connect("confirmed", this, "_create_poly");
} break;
case NOTIFICATION_PHYSICS_PROCESS: {
} break;
}
}
void LightOccluder2DEditor::_node_removed(Node *p_node) {
if (p_node == node) {
node = NULL;
hide();
canvas_item_editor->get_viewport_control()->update();
}
}
void LightOccluder2DEditor::_menu_option(int p_option) {
switch (p_option) {
case MODE_CREATE: {
mode = MODE_CREATE;
button_create->set_pressed(true);
button_edit->set_pressed(false);
} break;
case MODE_EDIT: {
mode = MODE_EDIT;
button_create->set_pressed(false);
button_edit->set_pressed(true);
} break;
}
}
void LightOccluder2DEditor::_wip_close(bool p_closed) {
undo_redo->create_action(TTR("Create Poly"));
undo_redo->add_undo_method(node->get_occluder_polygon().ptr(), "set_polygon", node->get_occluder_polygon()->get_polygon());
undo_redo->add_do_method(node->get_occluder_polygon().ptr(), "set_polygon", wip);
undo_redo->add_undo_method(node->get_occluder_polygon().ptr(), "set_closed", node->get_occluder_polygon()->is_closed());
undo_redo->add_do_method(node->get_occluder_polygon().ptr(), "set_closed", p_closed);
undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
undo_redo->commit_action();
wip.clear();
wip_active = false;
mode = MODE_EDIT;
button_edit->set_pressed(true);
button_create->set_pressed(false);
edited_point = -1;
}
bool LightOccluder2DEditor::forward_gui_input(const Ref<InputEvent> &p_event) {
if (!node)
return false;
if (node->get_occluder_polygon().is_null()) {
Ref<InputEventMouseButton> mb = p_event;
if (mb.is_valid() && mb->get_button_index() == 1 && mb->is_pressed()) {
create_poly->set_text(TTR("No OccluderPolygon2D resource on this node.\nCreate and assign one?"));
create_poly->popup_centered_minsize();
}
return (mb.is_valid() && mb->get_button_index() == 1);
}
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())));
Vector<Vector2> poly = Variant(node->get_occluder_polygon()->get_polygon());
//first check if a point is to be added (segment split)
real_t grab_threshold = EDITOR_DEF("editors/poly_editor/point_grab_radius", 8);
switch (mode) {
case MODE_CREATE: {
if (mb->get_button_index() == BUTTON_LEFT && mb->is_pressed()) {
if (!wip_active) {
wip.clear();
wip.push_back(cpoint);
wip_active = true;
edited_point_pos = cpoint;
canvas_item_editor->get_viewport_control()->update();
edited_point = 1;
return true;
} else {
if (wip.size() > 1 && xform.xform(wip[0]).distance_to(gpoint) < grab_threshold) {
//wip closed
_wip_close(true);
return true;
} else if (wip.size() > 1 && xform.xform(wip[wip.size() - 1]).distance_to(gpoint) < grab_threshold) {
//wip closed
_wip_close(false);
return true;
} else {
wip.push_back(cpoint);
edited_point = wip.size();
canvas_item_editor->get_viewport_control()->update();
return true;
//add wip point
}
}
} else if (mb->get_button_index() == BUTTON_RIGHT && mb->is_pressed() && wip_active) {
_wip_close(true);
}
} break;
case MODE_EDIT: {
if (mb->get_button_index() == BUTTON_LEFT) {
if (mb->is_pressed()) {
if (mb->get_control()) {
if (poly.size() < 3) {
undo_redo->create_action(TTR("Edit Poly"));
undo_redo->add_undo_method(node->get_occluder_polygon().ptr(), "set_polygon", poly);
poly.push_back(cpoint);
undo_redo->add_do_method(node->get_occluder_polygon().ptr(), "set_polygon", poly);
undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
undo_redo->commit_action();
return true;
}
//search edges
int closest_idx = -1;
Vector2 closest_pos;
real_t closest_dist = 1e10;
for (int i = 0; i < poly.size(); i++) {
Vector2 points[2] = { xform.xform(poly[i]),
xform.xform(poly[(i + 1) % poly.size()]) };
Vector2 cp = Geometry::get_closest_point_to_segment_2d(gpoint, points);
if (cp.distance_squared_to(points[0]) < CMP_EPSILON2 || cp.distance_squared_to(points[1]) < CMP_EPSILON2)
continue; //not valid to reuse point
real_t d = cp.distance_to(gpoint);
if (d < closest_dist && d < grab_threshold) {
closest_dist = d;
closest_pos = cp;
closest_idx = i;
}
}
if (closest_idx >= 0) {
pre_move_edit = poly;
poly.insert(closest_idx + 1, xform.affine_inverse().xform(closest_pos));
edited_point = closest_idx + 1;
edited_point_pos = xform.affine_inverse().xform(closest_pos);
node->get_occluder_polygon()->set_polygon(Variant(poly));
canvas_item_editor->get_viewport_control()->update();
return true;
}
} else {
//look for points to move
int closest_idx = -1;
Vector2 closest_pos;
real_t closest_dist = 1e10;
for (int i = 0; i < poly.size(); i++) {
Vector2 cp = xform.xform(poly[i]);
real_t d = cp.distance_to(gpoint);
if (d < closest_dist && d < grab_threshold) {
closest_dist = d;
closest_pos = cp;
closest_idx = i;
}
}
if (closest_idx >= 0) {
pre_move_edit = poly;
edited_point = closest_idx;
edited_point_pos = xform.affine_inverse().xform(closest_pos);
canvas_item_editor->get_viewport_control()->update();
return true;
}
}
} else {
if (edited_point != -1) {
//apply
ERR_FAIL_INDEX_V(edited_point, poly.size(), false);
poly[edited_point] = edited_point_pos;
undo_redo->create_action(TTR("Edit Poly"));
undo_redo->add_do_method(node->get_occluder_polygon().ptr(), "set_polygon", poly);
undo_redo->add_undo_method(node->get_occluder_polygon().ptr(), "set_polygon", pre_move_edit);
undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
undo_redo->commit_action();
edited_point = -1;
return true;
}
}
} else if (mb->get_button_index() == BUTTON_RIGHT && mb->is_pressed() && edited_point == -1) {
int closest_idx = -1;
Vector2 closest_pos;
real_t closest_dist = 1e10;
for (int i = 0; i < poly.size(); i++) {
Vector2 cp = xform.xform(poly[i]);
real_t d = cp.distance_to(gpoint);
if (d < closest_dist && d < grab_threshold) {
closest_dist = d;
closest_pos = cp;
closest_idx = i;
}
}
if (closest_idx >= 0) {
undo_redo->create_action(TTR("Edit Poly (Remove Point)"));
undo_redo->add_undo_method(node->get_occluder_polygon().ptr(), "set_polygon", poly);
poly.remove(closest_idx);
undo_redo->add_do_method(node->get_occluder_polygon().ptr(), "set_polygon", poly);
undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
undo_redo->commit_action();
return true;
}
}
} break;
}
}
Ref<InputEventMouseMotion> mm = p_event;
if (mm.is_valid()) {
if (edited_point != -1 && (wip_active || mm->get_button_mask() & BUTTON_MASK_LEFT)) {
Vector2 gpoint = mm->get_position();
Vector2 cpoint = canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint);
cpoint = canvas_item_editor->snap_point(cpoint);
edited_point_pos = node->get_global_transform().affine_inverse().xform(cpoint);
canvas_item_editor->get_viewport_control()->update();
}
}
return false;
}
void LightOccluder2DEditor::forward_draw_over_viewport(Control *p_overlay) {
if (!node || !node->get_occluder_polygon().is_valid())
return;
Control *vpc = canvas_item_editor->get_viewport_control();
Vector<Vector2> poly;
if (wip_active)
poly = wip;
else
poly = Variant(node->get_occluder_polygon()->get_polygon());
Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
Ref<Texture> handle = get_icon("EditorHandle", "EditorIcons");
for (int i = 0; i < poly.size(); i++) {
Vector2 p, p2;
p = i == edited_point ? edited_point_pos : poly[i];
if ((wip_active && i == poly.size() - 1) || (((i + 1) % poly.size()) == edited_point))
p2 = edited_point_pos;
else
p2 = poly[(i + 1) % poly.size()];
Vector2 point = xform.xform(p);
Vector2 next_point = xform.xform(p2);
Color col = Color(1, 0.3, 0.1, 0.8);
if (i == poly.size() - 1 && (!node->get_occluder_polygon()->is_closed() || wip_active)) {
} else {
vpc->draw_line(point, next_point, col, 2);
}
vpc->draw_texture(handle, point - handle->get_size() * 0.5);
}
}
void LightOccluder2DEditor::edit(Node *p_collision_polygon) {
if (!canvas_item_editor) {
canvas_item_editor = CanvasItemEditor::get_singleton();
}
if (p_collision_polygon) {
node = Object::cast_to<LightOccluder2D>(p_collision_polygon);
wip.clear();
wip_active = false;
edited_point = -1;
canvas_item_editor->get_viewport_control()->update();
} else {
node = NULL;
}
}
void LightOccluder2DEditor::_create_poly() {
if (!node)
return;
undo_redo->create_action(TTR("Create Occluder Polygon"));
undo_redo->add_do_method(node, "set_occluder_polygon", Ref<OccluderPolygon2D>(memnew(OccluderPolygon2D)));
undo_redo->add_undo_method(node, "set_occluder_polygon", Variant(REF()));
undo_redo->commit_action();
}
void LightOccluder2DEditor::_bind_methods() {
ClassDB::bind_method(D_METHOD("_menu_option"), &LightOccluder2DEditor::_menu_option);
ClassDB::bind_method(D_METHOD("_node_removed"), &LightOccluder2DEditor::_node_removed);
ClassDB::bind_method(D_METHOD("_create_poly"), &LightOccluder2DEditor::_create_poly);
}
LightOccluder2DEditor::LightOccluder2DEditor(EditorNode *p_editor) {
node = NULL;
canvas_item_editor = NULL;
editor = p_editor;
undo_redo = editor->get_undo_redo();
add_child(memnew(VSeparator));
button_create = memnew(ToolButton);
add_child(button_create);
button_create->connect("pressed", this, "_menu_option", varray(MODE_CREATE));
button_create->set_toggle_mode(true);
button_create->set_tooltip(TTR("Create a new polygon from scratch."));
button_edit = memnew(ToolButton);
add_child(button_edit);
button_edit->connect("pressed", this, "_menu_option", varray(MODE_EDIT));
button_edit->set_toggle_mode(true);
button_edit->set_tooltip(TTR("Edit existing polygon:") + "\n" + TTR("LMB: Move Point.") + "\n" + TTR("Ctrl+LMB: Split Segment.") + "\n" + TTR("RMB: Erase Point."));
create_poly = memnew(ConfirmationDialog);
add_child(create_poly);
create_poly->get_ok()->set_text(TTR("Create"));
mode = MODE_EDIT;
wip_active = false;
}
void LightOccluder2DEditorPlugin::edit(Object *p_object) {
light_occluder_editor->edit(Object::cast_to<Node>(p_object));
}
bool LightOccluder2DEditorPlugin::handles(Object *p_object) const {
return p_object->is_class("LightOccluder2D");
}
void LightOccluder2DEditorPlugin::make_visible(bool p_visible) {
if (p_visible) {
light_occluder_editor->show();
} else {
light_occluder_editor->hide();
light_occluder_editor->edit(NULL);
}
}
LightOccluder2DEditorPlugin::LightOccluder2DEditorPlugin(EditorNode *p_node) {
editor = p_node;
light_occluder_editor = memnew(LightOccluder2DEditor(p_node));
CanvasItemEditor::get_singleton()->add_control_to_menu_panel(light_occluder_editor);
light_occluder_editor->hide();
}
LightOccluder2DEditorPlugin::~LightOccluder2DEditorPlugin() {
}
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