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godot/scene/2d/node_2d.cpp
Rémi Verschelde d8223ffa75 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!

(cherry picked from commit c7bc44d5ad)
2017-01-12 19:15:30 +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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