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godot/editor/plugins/collision_shape_2d_editor_plugin.cpp
Hein-Pieter van Braam 0e29f7974b Reduce unnecessary COW on Vector by make writing explicit 
This commit makes operator[] on Vector const and adds a write proxy to it.  From
now on writes to Vectors need to happen through the .write proxy. So for
instance:

Vector<int> vec;
vec.push_back(10);
std::cout << vec[0] << std::endl;
vec.write[0] = 20;

Failing to use the .write proxy will cause a compilation error.

In addition COWable datatypes can now embed a CowData pointer to their data.
This means that String, CharString, and VMap no longer use or derive from
Vector.

_ALWAYS_INLINE_ and _FORCE_INLINE_ are now equivalent for debug and non-debug
builds. This is a lot faster for Vector in the editor and while running tests.
The reason why this difference used to exist is because force-inlined methods
used to give a bad debugging experience. After extensive testing with modern
compilers this is no longer the case.
2018-07-26 00:54:16 +02:00

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/*************************************************************************/
/* collision_shape_2d_editor_plugin.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 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.write[0] = Point2(radius, -height);
handles.write[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.write[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.write[0] = shape->get_normal() * shape->get_d();
handles.write[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.write[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.write[0] = Point2(ext.x, 0);
handles.write[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.write[0] = shape->get_a();
handles.write[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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