459 lines
14 KiB
C++
459 lines
14 KiB
C++
/*************************************************************************/
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/* node_2d.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "node_2d.h"
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#include "core/message_queue.h"
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#include "scene/gui/control.h"
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#include "scene/main/viewport.h"
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#include "servers/visual_server.h"
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#ifdef TOOLS_ENABLED
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Dictionary Node2D::_edit_get_state() const {
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Dictionary state;
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state["position"] = get_position();
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state["rotation"] = get_rotation();
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state["scale"] = get_scale();
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return state;
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}
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void Node2D::_edit_set_state(const Dictionary &p_state) {
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pos = p_state["position"];
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angle = p_state["rotation"];
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_scale = p_state["scale"];
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_update_transform();
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_change_notify("rotation");
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_change_notify("rotation_degrees");
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_change_notify("scale");
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_change_notify("position");
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}
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void Node2D::_edit_set_position(const Point2 &p_position) {
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set_position(p_position);
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}
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Point2 Node2D::_edit_get_position() const {
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return pos;
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}
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void Node2D::_edit_set_scale(const Size2 &p_scale) {
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set_scale(p_scale);
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}
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Size2 Node2D::_edit_get_scale() const {
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return _scale;
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}
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void Node2D::_edit_set_rotation(float p_rotation) {
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angle = p_rotation;
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_update_transform();
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_change_notify("rotation");
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_change_notify("rotation_degrees");
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}
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float Node2D::_edit_get_rotation() const {
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return angle;
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}
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bool Node2D::_edit_use_rotation() const {
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return true;
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}
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void Node2D::_edit_set_rect(const Rect2 &p_edit_rect) {
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ERR_FAIL_COND(!_edit_use_rect());
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Rect2 r = _edit_get_rect();
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Vector2 zero_offset;
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if (r.size.x != 0) {
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zero_offset.x = -r.position.x / r.size.x;
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}
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if (r.size.y != 0) {
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zero_offset.y = -r.position.y / r.size.y;
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}
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Size2 new_scale(1, 1);
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if (r.size.x != 0) {
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new_scale.x = p_edit_rect.size.x / r.size.x;
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}
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if (r.size.y != 0) {
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new_scale.y = p_edit_rect.size.y / r.size.y;
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}
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Point2 new_pos = p_edit_rect.position + p_edit_rect.size * zero_offset;
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Transform2D postxf;
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postxf.set_rotation_and_scale(angle, _scale);
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new_pos = postxf.xform(new_pos);
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pos += new_pos;
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_scale *= new_scale;
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_update_transform();
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_change_notify("scale");
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_change_notify("position");
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}
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#endif
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void Node2D::_update_xform_values() {
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pos = _mat.elements[2];
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angle = _mat.get_rotation();
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_scale = _mat.get_scale();
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_xform_dirty = false;
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}
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void Node2D::_update_transform() {
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_mat.set_rotation_and_scale(angle, _scale);
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_mat.elements[2] = pos;
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VisualServer::get_singleton()->canvas_item_set_transform(get_canvas_item(), _mat);
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if (!is_inside_tree()) {
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return;
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}
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_notify_transform();
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}
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void Node2D::set_position(const Point2 &p_pos) {
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if (_xform_dirty) {
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((Node2D *)this)->_update_xform_values();
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}
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pos = p_pos;
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_update_transform();
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_change_notify("position");
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}
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void Node2D::set_rotation(float p_radians) {
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if (_xform_dirty) {
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((Node2D *)this)->_update_xform_values();
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}
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angle = p_radians;
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_update_transform();
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_change_notify("rotation");
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_change_notify("rotation_degrees");
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}
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void Node2D::set_rotation_degrees(float p_degrees) {
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set_rotation(Math::deg2rad(p_degrees));
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}
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void Node2D::set_scale(const Size2 &p_scale) {
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if (_xform_dirty) {
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((Node2D *)this)->_update_xform_values();
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}
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_scale = p_scale;
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// Avoid having 0 scale values, can lead to errors in physics and rendering.
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if (Math::is_zero_approx(_scale.x)) {
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_scale.x = CMP_EPSILON;
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}
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if (Math::is_zero_approx(_scale.y)) {
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_scale.y = CMP_EPSILON;
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}
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_update_transform();
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_change_notify("scale");
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}
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Point2 Node2D::get_position() const {
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if (_xform_dirty) {
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((Node2D *)this)->_update_xform_values();
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}
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return pos;
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}
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float Node2D::get_rotation() const {
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if (_xform_dirty) {
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((Node2D *)this)->_update_xform_values();
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}
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return angle;
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}
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float Node2D::get_rotation_degrees() const {
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return Math::rad2deg(get_rotation());
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}
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Size2 Node2D::get_scale() const {
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if (_xform_dirty) {
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((Node2D *)this)->_update_xform_values();
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}
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return _scale;
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}
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Transform2D Node2D::get_transform() const {
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return _mat;
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}
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void Node2D::rotate(float p_radians) {
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set_rotation(get_rotation() + p_radians);
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}
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void Node2D::translate(const Vector2 &p_amount) {
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set_position(get_position() + p_amount);
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}
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void Node2D::global_translate(const Vector2 &p_amount) {
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set_global_position(get_global_position() + p_amount);
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}
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void Node2D::apply_scale(const Size2 &p_amount) {
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set_scale(get_scale() * p_amount);
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}
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void Node2D::move_x(float p_delta, bool p_scaled) {
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Transform2D t = get_transform();
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Vector2 m = t[0];
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if (!p_scaled) {
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m.normalize();
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}
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set_position(t[2] + m * p_delta);
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}
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void Node2D::move_y(float p_delta, bool p_scaled) {
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Transform2D t = get_transform();
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Vector2 m = t[1];
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if (!p_scaled) {
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m.normalize();
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}
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set_position(t[2] + m * p_delta);
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}
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Point2 Node2D::get_global_position() const {
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return get_global_transform().get_origin();
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}
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void Node2D::set_global_position(const Point2 &p_pos) {
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Transform2D inv;
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CanvasItem *pi = get_parent_item();
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if (pi) {
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inv = pi->get_global_transform().affine_inverse();
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set_position(inv.xform(p_pos));
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} else {
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set_position(p_pos);
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}
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}
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float Node2D::get_global_rotation() const {
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return get_global_transform().get_rotation();
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}
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void Node2D::set_global_rotation(float p_radians) {
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CanvasItem *pi = get_parent_item();
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if (pi) {
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const float parent_global_rot = pi->get_global_transform().get_rotation();
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set_rotation(p_radians - parent_global_rot);
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} else {
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set_rotation(p_radians);
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}
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}
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float Node2D::get_global_rotation_degrees() const {
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return Math::rad2deg(get_global_rotation());
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}
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void Node2D::set_global_rotation_degrees(float p_degrees) {
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set_global_rotation(Math::deg2rad(p_degrees));
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}
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Size2 Node2D::get_global_scale() const {
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return get_global_transform().get_scale();
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}
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void Node2D::set_global_scale(const Size2 &p_scale) {
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CanvasItem *pi = get_parent_item();
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if (pi) {
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const Size2 parent_global_scale = pi->get_global_transform().get_scale();
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set_scale(p_scale / parent_global_scale);
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} else {
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set_scale(p_scale);
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}
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}
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void Node2D::set_transform(const Transform2D &p_transform) {
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_mat = p_transform;
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_xform_dirty = true;
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VisualServer::get_singleton()->canvas_item_set_transform(get_canvas_item(), _mat);
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if (!is_inside_tree()) {
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return;
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}
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_notify_transform();
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}
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void Node2D::set_global_transform(const Transform2D &p_transform) {
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CanvasItem *pi = get_parent_item();
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if (pi) {
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set_transform(pi->get_global_transform().affine_inverse() * p_transform);
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} else {
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set_transform(p_transform);
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}
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}
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void Node2D::set_z_index(int p_z) {
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ERR_FAIL_COND(p_z < VS::CANVAS_ITEM_Z_MIN);
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ERR_FAIL_COND(p_z > VS::CANVAS_ITEM_Z_MAX);
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z_index = p_z;
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VS::get_singleton()->canvas_item_set_z_index(get_canvas_item(), z_index);
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_change_notify("z_index");
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}
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void Node2D::set_z_as_relative(bool p_enabled) {
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if (z_relative == p_enabled) {
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return;
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}
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z_relative = p_enabled;
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VS::get_singleton()->canvas_item_set_z_as_relative_to_parent(get_canvas_item(), p_enabled);
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}
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bool Node2D::is_z_relative() const {
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return z_relative;
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}
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int Node2D::get_z_index() const {
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return z_index;
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}
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Transform2D Node2D::get_relative_transform_to_parent(const Node *p_parent) const {
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if (p_parent == this) {
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return Transform2D();
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}
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Node2D *parent_2d = Object::cast_to<Node2D>(get_parent());
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ERR_FAIL_COND_V(!parent_2d, Transform2D());
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if (p_parent == parent_2d) {
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return get_transform();
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} else {
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return parent_2d->get_relative_transform_to_parent(p_parent) * get_transform();
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}
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}
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void Node2D::look_at(const Vector2 &p_pos) {
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rotate(get_angle_to(p_pos));
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}
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float Node2D::get_angle_to(const Vector2 &p_pos) const {
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return (to_local(p_pos) * get_scale()).angle();
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}
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Point2 Node2D::to_local(Point2 p_global) const {
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return get_global_transform().affine_inverse().xform(p_global);
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}
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Point2 Node2D::to_global(Point2 p_local) const {
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return get_global_transform().xform(p_local);
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}
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void Node2D::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_position", "position"), &Node2D::set_position);
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ClassDB::bind_method(D_METHOD("set_rotation", "radians"), &Node2D::set_rotation);
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ClassDB::bind_method(D_METHOD("set_rotation_degrees", "degrees"), &Node2D::set_rotation_degrees);
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ClassDB::bind_method(D_METHOD("set_scale", "scale"), &Node2D::set_scale);
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ClassDB::bind_method(D_METHOD("get_position"), &Node2D::get_position);
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ClassDB::bind_method(D_METHOD("get_rotation"), &Node2D::get_rotation);
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ClassDB::bind_method(D_METHOD("get_rotation_degrees"), &Node2D::get_rotation_degrees);
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ClassDB::bind_method(D_METHOD("get_scale"), &Node2D::get_scale);
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ClassDB::bind_method(D_METHOD("rotate", "radians"), &Node2D::rotate);
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ClassDB::bind_method(D_METHOD("move_local_x", "delta", "scaled"), &Node2D::move_x, DEFVAL(false));
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ClassDB::bind_method(D_METHOD("move_local_y", "delta", "scaled"), &Node2D::move_y, DEFVAL(false));
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ClassDB::bind_method(D_METHOD("translate", "offset"), &Node2D::translate);
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ClassDB::bind_method(D_METHOD("global_translate", "offset"), &Node2D::global_translate);
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ClassDB::bind_method(D_METHOD("apply_scale", "ratio"), &Node2D::apply_scale);
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ClassDB::bind_method(D_METHOD("set_global_position", "position"), &Node2D::set_global_position);
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ClassDB::bind_method(D_METHOD("get_global_position"), &Node2D::get_global_position);
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ClassDB::bind_method(D_METHOD("set_global_rotation", "radians"), &Node2D::set_global_rotation);
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ClassDB::bind_method(D_METHOD("get_global_rotation"), &Node2D::get_global_rotation);
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ClassDB::bind_method(D_METHOD("set_global_rotation_degrees", "degrees"), &Node2D::set_global_rotation_degrees);
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ClassDB::bind_method(D_METHOD("get_global_rotation_degrees"), &Node2D::get_global_rotation_degrees);
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ClassDB::bind_method(D_METHOD("set_global_scale", "scale"), &Node2D::set_global_scale);
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ClassDB::bind_method(D_METHOD("get_global_scale"), &Node2D::get_global_scale);
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ClassDB::bind_method(D_METHOD("set_transform", "xform"), &Node2D::set_transform);
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ClassDB::bind_method(D_METHOD("set_global_transform", "xform"), &Node2D::set_global_transform);
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ClassDB::bind_method(D_METHOD("look_at", "point"), &Node2D::look_at);
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ClassDB::bind_method(D_METHOD("get_angle_to", "point"), &Node2D::get_angle_to);
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ClassDB::bind_method(D_METHOD("to_local", "global_point"), &Node2D::to_local);
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ClassDB::bind_method(D_METHOD("to_global", "local_point"), &Node2D::to_global);
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ClassDB::bind_method(D_METHOD("set_z_index", "z_index"), &Node2D::set_z_index);
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ClassDB::bind_method(D_METHOD("get_z_index"), &Node2D::get_z_index);
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ClassDB::bind_method(D_METHOD("set_z_as_relative", "enable"), &Node2D::set_z_as_relative);
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ClassDB::bind_method(D_METHOD("is_z_relative"), &Node2D::is_z_relative);
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ClassDB::bind_method(D_METHOD("get_relative_transform_to_parent", "parent"), &Node2D::get_relative_transform_to_parent);
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ADD_GROUP("Transform", "");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "position"), "set_position", "get_position");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "rotation", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "set_rotation", "get_rotation");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "rotation_degrees", PROPERTY_HINT_RANGE, "-360,360,0.1,or_lesser,or_greater", PROPERTY_USAGE_EDITOR), "set_rotation_degrees", "get_rotation_degrees");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scale"), "set_scale", "get_scale");
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ADD_PROPERTY(PropertyInfo(Variant::TRANSFORM2D, "transform", PROPERTY_HINT_NONE, "", 0), "set_transform", "get_transform");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "global_position", PROPERTY_HINT_NONE, "", 0), "set_global_position", "get_global_position");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "global_rotation", PROPERTY_HINT_NONE, "", 0), "set_global_rotation", "get_global_rotation");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "global_rotation_degrees", PROPERTY_HINT_NONE, "", 0), "set_global_rotation_degrees", "get_global_rotation_degrees");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "global_scale", PROPERTY_HINT_NONE, "", 0), "set_global_scale", "get_global_scale");
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ADD_PROPERTY(PropertyInfo(Variant::TRANSFORM2D, "global_transform", PROPERTY_HINT_NONE, "", 0), "set_global_transform", "get_global_transform");
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ADD_GROUP("Z Index", "");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "z_index", PROPERTY_HINT_RANGE, itos(VS::CANVAS_ITEM_Z_MIN) + "," + itos(VS::CANVAS_ITEM_Z_MAX) + ",1"), "set_z_index", "get_z_index");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "z_as_relative"), "set_z_as_relative", "is_z_relative");
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}
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#ifdef TOOLS_ENABLED
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StringName Node2D::get_property_store_alias(const StringName &p_property) const {
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if (p_property == "rotation_degrees") {
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return "rotation";
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} else {
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return Node::get_property_store_alias(p_property);
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}
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}
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#endif
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Node2D::Node2D() {
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angle = 0;
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_scale = Vector2(1, 1);
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_xform_dirty = false;
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z_index = 0;
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z_relative = true;
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}
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