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godot/scene/2d/node_2d.cpp
Rémi Verschelde c7bc44d5ad Welcome in 2017, dear changelog reader! 
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!
2017-01-01 22:03:33 +01:00

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/*************************************************************************/
/* node_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "node_2d.h"
#include "servers/visual_server.h"
#include "scene/gui/control.h"
#include "scene/main/viewport.h"
#include "message_queue.h"
void Node2D::edit_set_pivot(const Point2& p_pivot) {
}
Point2 Node2D::edit_get_pivot() const {
return Point2();
}
bool Node2D::edit_has_pivot() const {
return false;
}
Variant Node2D::edit_get_state() const {
Array state;
state.push_back(get_pos());
state.push_back(get_rot());
state.push_back(get_scale());
return state;
}
void Node2D::edit_set_state(const Variant& p_state) {
Array state = p_state;
ERR_FAIL_COND( state.size() != 3);
pos = state[0];
angle = state[1];
_scale = state[2];
_update_transform();
_change_notify("transform/rot");
_change_notify("transform/scale");
_change_notify("transform/pos");
}
void Node2D::edit_set_rect(const Rect2& p_edit_rect) {
Rect2 r = get_item_rect();
Vector2 zero_offset;
if (r.size.x!=0)
zero_offset.x = -r.pos.x / r.size.x;
if (r.size.y!=0)
zero_offset.y = -r.pos.y / r.size.y;
Size2 new_scale(1,1);
if (r.size.x!=0)
new_scale.x = p_edit_rect.size.x / r.size.x;
if (r.size.y!=0)
new_scale.y = p_edit_rect.size.y / r.size.y;
Point2 new_pos = p_edit_rect.pos + p_edit_rect.size*zero_offset;//p_edit_rect.pos - r.pos;
Matrix32 postxf;
postxf.set_rotation_and_scale(angle,_scale);
new_pos = postxf.xform(new_pos);
pos+=new_pos;
_scale*=new_scale;
_update_transform();
_change_notify("transform/scale");
_change_notify("transform/pos");
}
void Node2D::edit_rotate(float p_rot) {
angle+=p_rot;
_update_transform();
_change_notify("transform/rot");
}
void Node2D::_update_xform_values() {
pos=_mat.elements[2];
angle=_mat.get_rotation();
_scale=_mat.get_scale();
_xform_dirty=false;
}
void Node2D::_update_transform() {
Matrix32 mat(angle,pos);
_mat.set_rotation_and_scale(angle,_scale);
_mat.elements[2]=pos;
VisualServer::get_singleton()->canvas_item_set_transform(get_canvas_item(),_mat);
if (!is_inside_tree())
return;
_notify_transform();
}
void Node2D::set_pos(const Point2& p_pos) {
if (_xform_dirty)
((Node2D*)this)->_update_xform_values();
pos=p_pos;
_update_transform();
_change_notify("transform/pos");
}
void Node2D::set_rot(float p_radians) {
if (_xform_dirty)
((Node2D*)this)->_update_xform_values();
angle=p_radians;
_update_transform();
_change_notify("transform/rot");
}
void Node2D::set_rotd(float p_degrees) {
set_rot(Math::deg2rad(p_degrees));
}
// Kept for compatibility after rename to set_rotd.
// Could be removed after a couple releases.
void Node2D::_set_rotd(float p_degrees) {
WARN_PRINT("Deprecated method Node2D._set_rotd(): This method was renamed to set_rotd. Please adapt your code accordingly, as the old method will be obsoleted.");
set_rotd(p_degrees);
}
void Node2D::set_scale(const Size2& p_scale) {
if (_xform_dirty)
((Node2D*)this)->_update_xform_values();
_scale=p_scale;
if (_scale.x==0)
_scale.x=CMP_EPSILON;
if (_scale.y==0)
_scale.y=CMP_EPSILON;
_update_transform();
_change_notify("transform/scale");
}
Point2 Node2D::get_pos() const {
if (_xform_dirty)
((Node2D*)this)->_update_xform_values();
return pos;
}
float Node2D::get_rot() const {
if (_xform_dirty)
((Node2D*)this)->_update_xform_values();
return angle;
}
float Node2D::get_rotd() const {
return Math::rad2deg(get_rot());
}
// Kept for compatibility after rename to get_rotd.
// Could be removed after a couple releases.
float Node2D::_get_rotd() const {
WARN_PRINT("Deprecated method Node2D._get_rotd(): This method was renamed to get_rotd. Please adapt your code accordingly, as the old method will be obsoleted.");
return get_rotd();
}
Size2 Node2D::get_scale() const {
if (_xform_dirty)
((Node2D*)this)->_update_xform_values();
return _scale;
}
void Node2D::_notification(int p_what) {
switch(p_what) {
}
}
Matrix32 Node2D::get_transform() const {
return _mat;
}
Rect2 Node2D::get_item_rect() const {
if (get_script_instance()) {
Variant::CallError err;
Rect2 r = get_script_instance()->call("_get_item_rect",NULL,0,err);
if (err.error==Variant::CallError::CALL_OK)
return r;
}
return Rect2(Point2(-32,-32),Size2(64,64));
}
void Node2D::rotate(float p_radians) {
set_rot( get_rot() + p_radians);
}
void Node2D::translate(const Vector2& p_amount) {
set_pos( get_pos() + p_amount );
}
void Node2D::global_translate(const Vector2& p_amount) {
set_global_pos( get_global_pos() + p_amount );
}
void Node2D::scale(const Size2& p_amount) {
set_scale( get_scale() * p_amount );
}
void Node2D::move_x(float p_delta,bool p_scaled){
Matrix32 t = get_transform();
Vector2 m = t[0];
if (!p_scaled)
m.normalize();
set_pos(t[2]+m*p_delta);
}
void Node2D::move_y(float p_delta,bool p_scaled){
Matrix32 t = get_transform();
Vector2 m = t[1];
if (!p_scaled)
m.normalize();
set_pos(t[2]+m*p_delta);
}
Point2 Node2D::get_global_pos() const {
return get_global_transform().get_origin();
}
void Node2D::set_global_pos(const Point2& p_pos) {
Matrix32 inv;
CanvasItem *pi = get_parent_item();
if (pi) {
inv = pi->get_global_transform().affine_inverse();
set_pos(inv.xform(p_pos));
} else {
set_pos(p_pos);
}
}
float Node2D::get_global_rot() const {
return get_global_transform().get_rotation();
}
void Node2D::set_global_rot(float p_radians) {
CanvasItem *pi = get_parent_item();
if (pi) {
const float parent_global_rot = pi->get_global_transform().get_rotation();
set_rot(p_radians - parent_global_rot);
} else {
set_rot(p_radians);
}
}
float Node2D::get_global_rotd() const {
return Math::rad2deg(get_global_rot());
}
void Node2D::set_global_rotd(float p_degrees) {
set_global_rot(Math::deg2rad(p_degrees));
}
Size2 Node2D::get_global_scale() const {
return get_global_transform().get_scale();
}
void Node2D::set_global_scale(const Size2& p_scale) {
CanvasItem *pi = get_parent_item();
if (pi) {
const Size2 parent_global_scale = pi->get_global_transform().get_scale();
set_scale(p_scale - parent_global_scale);
} else {
set_scale(p_scale);
}
}
void Node2D::set_transform(const Matrix32& p_transform) {
_mat=p_transform;
_xform_dirty=true;
VisualServer::get_singleton()->canvas_item_set_transform(get_canvas_item(),_mat);
if (!is_inside_tree())
return;
_notify_transform();
}
void Node2D::set_global_transform(const Matrix32& p_transform) {
CanvasItem *pi = get_parent_item();
if (pi)
set_transform( pi->get_global_transform().affine_inverse() * p_transform);
else
set_transform(p_transform);
}
void Node2D::set_z(int p_z) {
ERR_FAIL_COND(p_z<VS::CANVAS_ITEM_Z_MIN);
ERR_FAIL_COND(p_z>VS::CANVAS_ITEM_Z_MAX);
z=p_z;
VS::get_singleton()->canvas_item_set_z(get_canvas_item(),z);
}
void Node2D::set_z_as_relative(bool p_enabled) {
if (z_relative==p_enabled)
return;
z_relative=p_enabled;
VS::get_singleton()->canvas_item_set_z_as_relative_to_parent(get_canvas_item(),p_enabled);
}
bool Node2D::is_z_relative() const {
return z_relative;
}
int Node2D::get_z() const{
return z;
}
Matrix32 Node2D::get_relative_transform_to_parent(const Node *p_parent) const {
if (p_parent==this)
return Matrix32();
Node2D *parent_2d = get_parent()->cast_to<Node2D>();
ERR_FAIL_COND_V(!parent_2d,Matrix32());
if (p_parent==parent_2d)
return get_transform();
else
return parent_2d->get_relative_transform_to_parent(p_parent) * get_transform();
}
void Node2D::look_at(const Vector2& p_pos) {
rotate(get_angle_to(p_pos));
}
float Node2D::get_angle_to(const Vector2& p_pos) const {
return (get_global_transform().affine_inverse().xform(p_pos)).angle();
}
void Node2D::_bind_methods() {
// TODO: Obsolete those two methods (old name) properly (GH-4397)
ObjectTypeDB::bind_method(_MD("_get_rotd"),&Node2D::_get_rotd);
ObjectTypeDB::bind_method(_MD("_set_rotd","degrees"),&Node2D::_set_rotd);
ObjectTypeDB::bind_method(_MD("set_pos","pos"),&Node2D::set_pos);
ObjectTypeDB::bind_method(_MD("set_rot","radians"),&Node2D::set_rot);
ObjectTypeDB::bind_method(_MD("set_rotd","degrees"),&Node2D::set_rotd);
ObjectTypeDB::bind_method(_MD("set_scale","scale"),&Node2D::set_scale);
ObjectTypeDB::bind_method(_MD("get_pos"),&Node2D::get_pos);
ObjectTypeDB::bind_method(_MD("get_rot"),&Node2D::get_rot);
ObjectTypeDB::bind_method(_MD("get_rotd"),&Node2D::get_rotd);
ObjectTypeDB::bind_method(_MD("get_scale"),&Node2D::get_scale);
ObjectTypeDB::bind_method(_MD("rotate","radians"),&Node2D::rotate);
ObjectTypeDB::bind_method(_MD("move_local_x","delta","scaled"),&Node2D::move_x,DEFVAL(false));
ObjectTypeDB::bind_method(_MD("move_local_y","delta","scaled"),&Node2D::move_y,DEFVAL(false));
ObjectTypeDB::bind_method(_MD("translate","offset"),&Node2D::translate);
ObjectTypeDB::bind_method(_MD("global_translate","offset"),&Node2D::global_translate);
ObjectTypeDB::bind_method(_MD("scale","ratio"),&Node2D::scale);
ObjectTypeDB::bind_method(_MD("set_global_pos","pos"),&Node2D::set_global_pos);
ObjectTypeDB::bind_method(_MD("get_global_pos"),&Node2D::get_global_pos);
ObjectTypeDB::bind_method(_MD("set_global_rot","radians"),&Node2D::set_global_rot);
ObjectTypeDB::bind_method(_MD("get_global_rot"),&Node2D::get_global_rot);
ObjectTypeDB::bind_method(_MD("set_global_rotd","degrees"),&Node2D::set_global_rotd);
ObjectTypeDB::bind_method(_MD("get_global_rotd"),&Node2D::get_global_rotd);
ObjectTypeDB::bind_method(_MD("set_global_scale","scale"),&Node2D::set_global_scale);
ObjectTypeDB::bind_method(_MD("get_global_scale"),&Node2D::get_global_scale);
ObjectTypeDB::bind_method(_MD("set_transform","xform"),&Node2D::set_transform);
ObjectTypeDB::bind_method(_MD("set_global_transform","xform"),&Node2D::set_global_transform);
ObjectTypeDB::bind_method(_MD("look_at","point"),&Node2D::look_at);
ObjectTypeDB::bind_method(_MD("get_angle_to","point"),&Node2D::get_angle_to);
ObjectTypeDB::bind_method(_MD("set_z","z"),&Node2D::set_z);
ObjectTypeDB::bind_method(_MD("get_z"),&Node2D::get_z);
ObjectTypeDB::bind_method(_MD("set_z_as_relative","enable"),&Node2D::set_z_as_relative);
ObjectTypeDB::bind_method(_MD("is_z_relative"),&Node2D::is_z_relative);
ObjectTypeDB::bind_method(_MD("edit_set_pivot","pivot"),&Node2D::edit_set_pivot);
ObjectTypeDB::bind_method(_MD("get_relative_transform_to_parent","parent"),&Node2D::get_relative_transform_to_parent);
ADD_PROPERTYNZ(PropertyInfo(Variant::VECTOR2,"transform/pos"),_SCS("set_pos"),_SCS("get_pos"));
ADD_PROPERTYNZ(PropertyInfo(Variant::REAL,"transform/rot",PROPERTY_HINT_RANGE,"-1440,1440,0.1"),_SCS("set_rotd"),_SCS("get_rotd"));
ADD_PROPERTYNO(PropertyInfo(Variant::VECTOR2,"transform/scale"),_SCS("set_scale"),_SCS("get_scale"));
ADD_PROPERTYNZ(PropertyInfo(Variant::INT,"z/z",PROPERTY_HINT_RANGE,itos(VS::CANVAS_ITEM_Z_MIN)+","+itos(VS::CANVAS_ITEM_Z_MAX)+",1"),_SCS("set_z"),_SCS("get_z"));
ADD_PROPERTYNO(PropertyInfo(Variant::BOOL,"z/relative"),_SCS("set_z_as_relative"),_SCS("is_z_relative"));
}
Node2D::Node2D() {
angle=0;
_scale=Vector2(1,1);
_xform_dirty=false;
z=0;
z_relative=true;
}
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