protected override void OnUpdate()
{
AddMissingComponentsToCanvas();
float2 screenSize = UILayoutService.GetScreenSize(this);
Entities.ForEach((ref UICanvas canvas, ref RectTransform rectTransform, ref NonUniformScale scale,
ref Translation localPosition, ref Rotation localRotation) =>
{
if (!EntityManager.HasComponent <Camera2D>(canvas.camera))
{
return;
}
var camera = EntityManager.GetComponentData <Camera2D>(canvas.camera);
float cameraScale = (camera.halfVerticalSize * 2.0f) / screenSize.y;
float canvasScale = GetUICanvasScale(screenSize, ref canvas);
scale.Value = canvasScale * cameraScale;
rectTransform.sizeDelta = screenSize / canvasScale;
// If the camera is translated or rotated, we need to apply the same transformation on the canvas,
// so the UI is always in the center.
AlignCanvasWithCamera(canvas, ref rectTransform, ref localRotation);
rectTransform.anchoredPosition.x += screenSize.x / 2.0f;
rectTransform.anchoredPosition.y += screenSize.y / 2.0f;
// Pivot and anchors never change for the Canvas.
rectTransform.pivot = new float2(0.5f, 0.5f);
rectTransform.anchorMin = float2.zero;
rectTransform.anchorMax = float2.zero;
});
}
protected override void OnUpdate()
{
Entities.ForEach((
Entity e, ref Parent node, ref RectTransform rt, ref Sprite2DRenderer sprite,
ref Sprite2DRendererOptions sprite2DRendererOptions) =>
{
var size = UILayoutService.GetRectTransformSizeOfEntity(this, e);
sprite2DRendererOptions.size = size;
});
}
protected override void OnUpdate()
{
Entities.ForEach((Entity e, ref RectTransform rect, ref RectTransformFinalSize size) =>
{
var s = UILayoutService.GetRectTransformSizeOfEntity(this, e);
EntityManager.SetComponentData(e, new RectTransformFinalSize()
{
size = s
});
});
}
/**
* Calculate correct Transform.localPosition based on RectTransform component.
*/
private float2 GetLocalPosition(
Entity e, ref RectTransform rectTransform, ref Parent parent)
{
var parentSize = UILayoutService.GetRectTransformSizeOfParent(this, parent.Value);
var size = UILayoutService.ComputeRectTransformSize(rectTransform.anchorMin, rectTransform.anchorMax,
rectTransform.sizeDelta, parentSize);
var anchorReferencePoint =
GetAnchorReferencePoint(rectTransform.anchorMin, rectTransform.anchorMax, rectTransform.pivot, parentSize);
var pivotRealUnits = GetPivotRealUnits(rectTransform.pivot, size);
var position = anchorReferencePoint + rectTransform.anchoredPosition - pivotRealUnits;
float3 scale;
if (EntityManager.HasComponent <NonUniformScale>(e))
{
scale = EntityManager.GetComponentData <NonUniformScale>(e).Value;
}
else
{
scale = new float3(1, 1, 1);
}
quaternion rotation;
if (EntityManager.HasComponent <Rotation>(e))
{
rotation = EntityManager.GetComponentData <Rotation>(e).Value;
}
else
{
rotation = quaternion.identity;
}
position = TransformPosition(position, pivotRealUnits, rotation, scale);
return(position);
}