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godot/editor/plugins/collision_shape_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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/*************************************************************************/
/* collision_shape_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 "collision_shape_2d_editor_plugin.h"
#include "canvas_item_editor_plugin.h"
#include "scene/resources/capsule_shape_2d.h"
#include "scene/resources/circle_shape_2d.h"
#include "scene/resources/concave_polygon_shape_2d.h"
#include "scene/resources/convex_polygon_shape_2d.h"
#include "scene/resources/rectangle_shape_2d.h"
#include "scene/resources/segment_shape_2d.h"
#include "scene/resources/shape_line_2d.h"
Variant CollisionShape2DEditor::get_handle_value(int idx) const {
switch (shape_type) {
case CAPSULE_SHAPE: {
Ref<CapsuleShape2D> capsule = node->get_shape();
if (idx == 0) {
return capsule->get_radius();
} else if (idx == 1) {
return capsule->get_height();
}
} break;
case CIRCLE_SHAPE: {
Ref<CircleShape2D> circle = node->get_shape();
if (idx == 0) {
return circle->get_radius();
}
} break;
case CONCAVE_POLYGON_SHAPE: {
} break;
case CONVEX_POLYGON_SHAPE: {
} break;
case LINE_SHAPE: {
Ref<LineShape2D> line = node->get_shape();
if (idx == 0) {
return line->get_d();
} else {
return line->get_normal();
}
} break;
case RAY_SHAPE: {
Ref<RayShape2D> ray = node->get_shape();
if (idx == 0) {
return ray->get_length();
}
} break;
case RECTANGLE_SHAPE: {
Ref<RectangleShape2D> rect = node->get_shape();
if (idx < 2) {
return rect->get_extents().abs();
}
} break;
case SEGMENT_SHAPE: {
Ref<SegmentShape2D> seg = node->get_shape();
if (idx == 0) {
return seg->get_a();
} else if (idx == 1) {
return seg->get_b();
}
} break;
}
return Variant();
}
void CollisionShape2DEditor::set_handle(int idx, Point2 &p_point) {
switch (shape_type) {
case CAPSULE_SHAPE: {
if (idx < 2) {
Ref<CapsuleShape2D> capsule = node->get_shape();
real_t parameter = Math::abs(p_point[idx]);
if (idx == 0) {
capsule->set_radius(parameter);
} else if (idx == 1) {
capsule->set_height(parameter * 2 - capsule->get_radius() * 2);
}
canvas_item_editor->get_viewport_control()->update();
}
} break;
case CIRCLE_SHAPE: {
Ref<CircleShape2D> circle = node->get_shape();
circle->set_radius(p_point.length());
canvas_item_editor->get_viewport_control()->update();
} break;
case CONCAVE_POLYGON_SHAPE: {
} break;
case CONVEX_POLYGON_SHAPE: {
} break;
case LINE_SHAPE: {
if (idx < 2) {
Ref<LineShape2D> line = node->get_shape();
if (idx == 0) {
line->set_d(p_point.length());
} else {
line->set_normal(p_point.normalized());
}
canvas_item_editor->get_viewport_control()->update();
}
} break;
case RAY_SHAPE: {
Ref<RayShape2D> ray = node->get_shape();
ray->set_length(Math::abs(p_point.y));
canvas_item_editor->get_viewport_control()->update();
} break;
case RECTANGLE_SHAPE: {
if (idx < 2) {
Ref<RectangleShape2D> rect = node->get_shape();
Vector2 extents = rect->get_extents();
extents[idx] = p_point[idx];
rect->set_extents(extents.abs());
canvas_item_editor->get_viewport_control()->update();
}
} break;
case SEGMENT_SHAPE: {
if (edit_handle < 2) {
Ref<SegmentShape2D> seg = node->get_shape();
if (idx == 0) {
seg->set_a(p_point);
} else if (idx == 1) {
seg->set_b(p_point);
}
canvas_item_editor->get_viewport_control()->update();
}
} break;
}
}
void CollisionShape2DEditor::commit_handle(int idx, Variant &p_org) {
Control *c = canvas_item_editor->get_viewport_control();
undo_redo->create_action(TTR("Set Handle"));
switch (shape_type) {
case CAPSULE_SHAPE: {
Ref<CapsuleShape2D> capsule = node->get_shape();
if (idx == 0) {
undo_redo->add_do_method(capsule.ptr(), "set_radius", capsule->get_radius());
undo_redo->add_do_method(c, "update");
undo_redo->add_undo_method(capsule.ptr(), "set_radius", p_org);
undo_redo->add_do_method(c, "update");
} else if (idx == 1) {
undo_redo->add_do_method(capsule.ptr(), "set_height", capsule->get_height());
undo_redo->add_do_method(c, "update");
undo_redo->add_undo_method(capsule.ptr(), "set_height", p_org);
undo_redo->add_undo_method(c, "update");
}
} break;
case CIRCLE_SHAPE: {
Ref<CircleShape2D> circle = node->get_shape();
undo_redo->add_do_method(circle.ptr(), "set_radius", circle->get_radius());
undo_redo->add_do_method(c, "update");
undo_redo->add_undo_method(circle.ptr(), "set_radius", p_org);
undo_redo->add_undo_method(c, "update");
} break;
case CONCAVE_POLYGON_SHAPE: {
} break;
case CONVEX_POLYGON_SHAPE: {
} break;
case LINE_SHAPE: {
Ref<LineShape2D> line = node->get_shape();
if (idx == 0) {
undo_redo->add_do_method(line.ptr(), "set_d", line->get_d());
undo_redo->add_do_method(c, "update");
undo_redo->add_undo_method(line.ptr(), "set_d", p_org);
undo_redo->add_undo_method(c, "update");
} else {
undo_redo->add_do_method(line.ptr(), "set_normal", line->get_normal());
undo_redo->add_do_method(c, "update");
undo_redo->add_undo_method(line.ptr(), "set_normal", p_org);
undo_redo->add_undo_method(c, "update");
}
} break;
case RAY_SHAPE: {
Ref<RayShape2D> ray = node->get_shape();
undo_redo->add_do_method(ray.ptr(), "set_length", ray->get_length());
undo_redo->add_do_method(c, "update");
undo_redo->add_undo_method(ray.ptr(), "set_length", p_org);
undo_redo->add_undo_method(c, "update");
} break;
case RECTANGLE_SHAPE: {
Ref<RectangleShape2D> rect = node->get_shape();
undo_redo->add_do_method(rect.ptr(), "set_extents", rect->get_extents());
undo_redo->add_do_method(c, "update");
undo_redo->add_undo_method(rect.ptr(), "set_extents", p_org);
undo_redo->add_undo_method(c, "update");
} break;
case SEGMENT_SHAPE: {
Ref<SegmentShape2D> seg = node->get_shape();
if (idx == 0) {
undo_redo->add_do_method(seg.ptr(), "set_a", seg->get_a());
undo_redo->add_do_method(c, "update");
undo_redo->add_undo_method(seg.ptr(), "set_a", p_org);
undo_redo->add_undo_method(c, "update");
} else if (idx == 1) {
undo_redo->add_do_method(seg.ptr(), "set_b", seg->get_b());
undo_redo->add_do_method(c, "update");
undo_redo->add_undo_method(seg.ptr(), "set_b", p_org);
undo_redo->add_undo_method(c, "update");
}
} break;
}
undo_redo->commit_action();
}
bool CollisionShape2DEditor::forward_canvas_gui_input(const Ref<InputEvent> &p_event) {
if (!node) {
return false;
}
if (!node->get_shape().is_valid()) {
return false;
}
if (shape_type == -1) {
return false;
}
Ref<InputEventMouseButton> mb = p_event;
Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
if (mb.is_valid()) {
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->get_button_index() == BUTTON_LEFT) {
if (mb->is_pressed()) {
for (int i = 0; i < handles.size(); i++) {
if (xform.xform(handles[i]).distance_to(gpoint) < 8) {
edit_handle = i;
break;
}
}
if (edit_handle == -1) {
pressed = false;
return false;
}
original = get_handle_value(edit_handle);
pressed = true;
return true;
} else {
if (pressed) {
commit_handle(edit_handle, original);
edit_handle = -1;
pressed = false;
return true;
}
}
}
return false;
}
Ref<InputEventMouseMotion> mm = p_event;
if (mm.is_valid()) {
if (edit_handle == -1 || !pressed) {
return false;
}
Vector2 cpoint = canvas_item_editor->snap_point(canvas_item_editor->get_canvas_transform().affine_inverse().xform(mm->get_position()));
cpoint = node->get_global_transform().affine_inverse().xform(cpoint);
set_handle(edit_handle, cpoint);
return true;
}
return false;
}
void CollisionShape2DEditor::_get_current_shape_type() {
if (!node) {
return;
}
Ref<Shape2D> s = node->get_shape();
if (!s.is_valid()) {
return;
}
if (Object::cast_to<CapsuleShape2D>(*s)) {
shape_type = CAPSULE_SHAPE;
} else if (Object::cast_to<CircleShape2D>(*s)) {
shape_type = CIRCLE_SHAPE;
} else if (Object::cast_to<ConcavePolygonShape2D>(*s)) {
shape_type = CONCAVE_POLYGON_SHAPE;
} else if (Object::cast_to<ConvexPolygonShape2D>(*s)) {
shape_type = CONVEX_POLYGON_SHAPE;
} else if (Object::cast_to<LineShape2D>(*s)) {
shape_type = LINE_SHAPE;
} else if (Object::cast_to<RayShape2D>(*s)) {
shape_type = RAY_SHAPE;
} else if (Object::cast_to<RectangleShape2D>(*s)) {
shape_type = RECTANGLE_SHAPE;
} else if (Object::cast_to<SegmentShape2D>(*s)) {
shape_type = SEGMENT_SHAPE;
} else {
shape_type = -1;
}
canvas_item_editor->get_viewport_control()->update();
}
void CollisionShape2DEditor::forward_draw_over_viewport(Control *p_overlay) {
if (!node) {
return;
}
if (!node->get_shape().is_valid()) {
return;
}
_get_current_shape_type();
if (shape_type == -1) {
return;
}
Transform2D gt = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
Ref<Texture> h = get_icon("EditorHandle", "EditorIcons");
Vector2 size = h->get_size() * 0.5;
handles.clear();
switch (shape_type) {
case CAPSULE_SHAPE: {
Ref<CapsuleShape2D> shape = node->get_shape();
handles.resize(2);
float radius = shape->get_radius();
float height = shape->get_height() / 2;
handles[0] = Point2(radius, -height);
handles[1] = Point2(0, -(height + radius));
p_overlay->draw_texture(h, gt.xform(handles[0]) - size);
p_overlay->draw_texture(h, gt.xform(handles[1]) - size);
} break;
case CIRCLE_SHAPE: {
Ref<CircleShape2D> shape = node->get_shape();
handles.resize(1);
handles[0] = Point2(shape->get_radius(), 0);
p_overlay->draw_texture(h, gt.xform(handles[0]) - size);
} break;
case CONCAVE_POLYGON_SHAPE: {
} break;
case CONVEX_POLYGON_SHAPE: {
} break;
case LINE_SHAPE: {
Ref<LineShape2D> shape = node->get_shape();
handles.resize(2);
handles[0] = shape->get_normal() * shape->get_d();
handles[1] = shape->get_normal() * (shape->get_d() + 30.0);
p_overlay->draw_texture(h, gt.xform(handles[0]) - size);
p_overlay->draw_texture(h, gt.xform(handles[1]) - size);
} break;
case RAY_SHAPE: {
Ref<RayShape2D> shape = node->get_shape();
handles.resize(1);
handles[0] = Point2(0, shape->get_length());
p_overlay->draw_texture(h, gt.xform(handles[0]) - size);
} break;
case RECTANGLE_SHAPE: {
Ref<RectangleShape2D> shape = node->get_shape();
handles.resize(2);
Vector2 ext = shape->get_extents();
handles[0] = Point2(ext.x, 0);
handles[1] = Point2(0, -ext.y);
p_overlay->draw_texture(h, gt.xform(handles[0]) - size);
p_overlay->draw_texture(h, gt.xform(handles[1]) - size);
} break;
case SEGMENT_SHAPE: {
Ref<SegmentShape2D> shape = node->get_shape();
handles.resize(2);
handles[0] = shape->get_a();
handles[1] = shape->get_b();
p_overlay->draw_texture(h, gt.xform(handles[0]) - size);
p_overlay->draw_texture(h, gt.xform(handles[1]) - size);
} break;
}
}
void CollisionShape2DEditor::edit(Node *p_node) {
if (!canvas_item_editor) {
canvas_item_editor = CanvasItemEditor::get_singleton();
}
if (p_node) {
node = Object::cast_to<CollisionShape2D>(p_node);
_get_current_shape_type();
} else {
edit_handle = -1;
shape_type = -1;
node = NULL;
}
canvas_item_editor->get_viewport_control()->update();
}
void CollisionShape2DEditor::_bind_methods() {
ClassDB::bind_method("_get_current_shape_type", &CollisionShape2DEditor::_get_current_shape_type);
}
CollisionShape2DEditor::CollisionShape2DEditor(EditorNode *p_editor) {
node = NULL;
canvas_item_editor = NULL;
editor = p_editor;
undo_redo = p_editor->get_undo_redo();
edit_handle = -1;
pressed = false;
}
void CollisionShape2DEditorPlugin::edit(Object *p_obj) {
collision_shape_2d_editor->edit(Object::cast_to<Node>(p_obj));
}
bool CollisionShape2DEditorPlugin::handles(Object *p_obj) const {
return p_obj->is_class("CollisionShape2D");
}
void CollisionShape2DEditorPlugin::make_visible(bool visible) {
if (!visible) {
edit(NULL);
}
}
CollisionShape2DEditorPlugin::CollisionShape2DEditorPlugin(EditorNode *p_editor) {
editor = p_editor;
collision_shape_2d_editor = memnew(CollisionShape2DEditor(p_editor));
p_editor->get_gui_base()->add_child(collision_shape_2d_editor);
}
CollisionShape2DEditorPlugin::~CollisionShape2DEditorPlugin() {
}
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