public static Bounds GetModelSpaceBounds(this SpriteRenderer spriteRenderer)
{
Sprite sprite = spriteRenderer.sprite;
if (sprite == null)
{
return(BoundsExtensions.GetInvalidBoundsInstance());
}
#if !UNITY_5
Vector3 modelSpaceCenter = spriteRenderer.transform.InverseTransformPoint(spriteRenderer.bounds.center);
modelSpaceCenter.z = 0.0f;
return(new Bounds(modelSpaceCenter, sprite.rect.size / sprite.pixelsPerUnit));
#else
List <Vector2> spriteVerts = new List <Vector2>(sprite.vertices);
return(Vector2Extensions.GetPointCloudAABB(spriteVerts));
#endif
}
public static Bounds GetPointCloudAABB(List <Vector2> pointCloud)
{
if (pointCloud.Count == 0)
{
return(BoundsExtensions.GetInvalidBoundsInstance());
}
Vector2 min = pointCloud[0];
Vector2 max = pointCloud[0];
for (int ptIndex = 1; ptIndex < pointCloud.Count; ++ptIndex)
{
Vector2 pt = pointCloud[ptIndex];
min = Vector2.Min(pt, min);
max = Vector2.Max(pt, max);
}
return(new Bounds((min + max) * 0.5f, max - min));
}
/// <summary>
/// Builds the camera view volume for the specified camera. Please see the comments for the
/// class constructor in order to understand what the second parameter is about.
/// </summary>
public void BuildForCamera(Camera camera, float desiredCameraFarClipPlane)
{
// Store the old camera far clip plane distance. We need to do this because we will
// temporarily modify the camera far clip plane to 'desiredCameraFarClipPlane' in order
// to perform all the necessary calculations.
float oldCameraFarClipPlane = camera.farClipPlane;
AdjustCameraFarClipPlane(camera, desiredCameraFarClipPlane);
// Calculate the view volume data
CalculateWorldSpacePoints(camera);
CalculateWorldSpacePlanes(camera);
CalculateWorldSpaceVolumeEdgeRays();
// Restore the camera far clip plane to what it was before
camera.farClipPlane = oldCameraFarClipPlane;
// Store clip plane distances
_farClipPlaneDistance = desiredCameraFarClipPlane;
_nearClipPlaneDistance = camera.nearClipPlane;
// Calculate near and far plane dimensions
Transform cameraTransform = camera.transform;
Vector3 cornerVector = TopLeftPointOnNearPlane - BottomRightPointOnNearPlane;
float width = Mathf.Abs(Vector3.Dot(cornerVector, cameraTransform.right));
float height = Mathf.Abs(Vector3.Dot(cornerVector, cameraTransform.up));
_nearPlaneSize = new Vector2(width, height);
cornerVector = TopLeftPointOnFarPlane - BottomRightPointOnFarPlane;
width = Mathf.Abs(Vector3.Dot(cornerVector, cameraTransform.right));
height = Mathf.Abs(Vector3.Dot(cornerVector, cameraTransform.up));
_farPlaneSize = new Vector2(width, height);
// Calculate the volume AABB
_aabb = BoundsExtensions.FromPointCloud(new List <Vector3>(_worldSpaceVolumePoints));
}
