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Merge pull request #70310 from Sauermann/3x-fix-follow-viewport-transform

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[3.x] Include the follow-viewport-transform into CanvasLayer transform calculations
This commit is contained in:
Rémi Verschelde 2022-12-22 08:55:28 +01:00
commit 3b7bb812fd
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GPG Key ID: C3336907360768E1
6 changed files with 28 additions and 8 deletions
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6
doc/classes/CanvasItem.xml
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@ -289,7 +289,7 @@
<method name="get_canvas_transform" qualifiers="const">
<return type="Transform2D" />
<description>
Returns the transform matrix of this item's canvas.
Returns the transform from the coordinate system of the canvas, this item is in, to the [Viewport]s coordinate system.
</description>
</method>
<method name="get_global_mouse_position" qualifiers="const">
@ -307,7 +307,7 @@
<method name="get_global_transform_with_canvas" qualifiers="const">
<return type="Transform2D" />
<description>
Returns the global transform matrix of this item in relation to the canvas.
Returns the transform from the local coordinate system of this [CanvasItem] to the [Viewport]s coordinate system.
</description>
</method>
<method name="get_local_mouse_position" qualifiers="const">
@ -331,7 +331,7 @@
<method name="get_viewport_transform" qualifiers="const">
<return type="Transform2D" />
<description>
Returns this item's transform in relation to the viewport.
Returns the transform from the coordinate system of the canvas, this item is in, to the [Viewport]s embedders coordinate system.
</description>
</method>
<method name="get_world_2d" qualifiers="const">

6
doc/classes/CanvasLayer.xml
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@ -18,6 +18,12 @@
Returns the RID of the canvas used by this layer.
</description>
</method>
<method name="get_final_transform" qualifiers="const">
<return type="Transform2D" />
<description>
Returns the transform from the [CanvasLayer]s coordinate system to the [Viewport]s coordinate system.
</description>
</method>
<method name="hide">
<return type="void" />
<description>

8
scene/2d/canvas_item.cpp
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@ -466,7 +466,7 @@ void CanvasItem::_update_callback() {
Transform2D CanvasItem::get_global_transform_with_canvas() const {
if (canvas_layer) {
return canvas_layer->get_transform() * get_global_transform();
return canvas_layer->get_final_transform() * get_global_transform();
} else if (is_inside_tree()) {
return get_viewport()->get_canvas_transform() * get_global_transform();
} else {
@ -1210,7 +1210,7 @@ Transform2D CanvasItem::get_canvas_transform() const {
ERR_FAIL_COND_V(!is_inside_tree(), Transform2D());
if (canvas_layer) {
return canvas_layer->get_transform();
return canvas_layer->get_final_transform();
} else if (Object::cast_to<CanvasItem>(get_parent())) {
return Object::cast_to<CanvasItem>(get_parent())->get_canvas_transform();
} else {
@ -1223,9 +1223,9 @@ Transform2D CanvasItem::get_viewport_transform() const {
if (canvas_layer) {
if (get_viewport()) {
return get_viewport()->get_final_transform() * canvas_layer->get_transform();
return get_viewport()->get_final_transform() * canvas_layer->get_final_transform();
} else {
return canvas_layer->get_transform();
return canvas_layer->get_final_transform();
}
} else {

13
scene/main/canvas_layer.cpp
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@ -83,6 +83,18 @@ Transform2D CanvasLayer::get_transform() const {
return transform;
}
Transform2D CanvasLayer::get_final_transform() const {
if (is_following_viewport()) {
Transform2D follow;
follow.scale(Vector2(get_follow_viewport_scale(), get_follow_viewport_scale()));
if (vp) {
follow = vp->get_canvas_transform() * follow;
}
return follow * transform;
}
return transform;
}
void CanvasLayer::_update_xform() {
transform.set_rotation_and_scale(rot, scale);
transform.set_origin(ofs);
@ -301,6 +313,7 @@ void CanvasLayer::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_transform", "transform"), &CanvasLayer::set_transform);
ClassDB::bind_method(D_METHOD("get_transform"), &CanvasLayer::get_transform);
ClassDB::bind_method(D_METHOD("get_final_transform"), &CanvasLayer::get_final_transform);
ClassDB::bind_method(D_METHOD("set_offset", "offset"), &CanvasLayer::set_offset);
ClassDB::bind_method(D_METHOD("get_offset"), &CanvasLayer::get_offset);

1
scene/main/canvas_layer.h
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@ -77,6 +77,7 @@ public:
void set_transform(const Transform2D &p_xform);
Transform2D get_transform() const;
Transform2D get_final_transform() const;
void set_offset(const Vector2 &p_offset);
Vector2 get_offset() const;

2
scene/main/viewport.cpp
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@ -553,7 +553,7 @@ void Viewport::_process_picking(bool p_ignore_paused) {
ObjectID canvas_layer_id;
if (E->get()) {
// A descendant CanvasLayer
canvas_transform = E->get()->get_transform();
canvas_transform = E->get()->get_final_transform();
canvas_layer_id = E->get()->get_instance_id();
} else {
// This Viewport's builtin canvas