/// <summary>Creates a new Flat World UI with the given pixels of space and a given name.
/// The gameobjects origin sits at the middle of the UI by default. See <see cref="PowerUI.WorldUI.SetOrigin"/>.
/// By default, 100 pixels are 1 world unit. See <see cref="PowerUI.WorldUI.SetResolution"/>.</summary>
/// <param name="name">The name for the UI's gameobject.</param>
/// <param name="widthPX">The width in pixels of this UI.</param>
/// <param name="heightPX">The height in pixels of this UI.</param>
public FlatWorldUI(string name, int widthPX, int heightPX) : base(name, widthPX, heightPX)
{
// It's a flat UI:
Flat = true;
// Create camera gameobject:
CameraObject = new GameObject();
CameraObject.name = name + "-#camera";
// Parent the camera to the root:
CameraObject.transform.parent = gameObject.transform;
CameraObject.transform.localPosition = Vector3.zero;
// Add a camera:
SourceCamera = CameraObject.AddComponent <Camera>();
// Put it right at the back:
SourceCamera.depth = -9999;
// Set the clear flags:
SourceCamera.clearFlags = CameraClearFlags.Color;
SourceCamera.backgroundColor = new Color(1f, 1f, 1f, 0f);
// Make it forward rendered (it deals with transparency):
SourceCamera.renderingPath = RenderingPath.Forward;
float zSpace = UI.GetCameraDistance();
// Setup the cameras distance:
SetCameraDistance(zSpace);
// Call the camera creation method:
UI.CameraGotCreated(SourceCamera);
// Make it orthographic:
SourceCamera.orthographic = true;
// Set the orthographic size:
SetOrthographicSize();
// Start our handler:
Handler = CameraObject.AddComponent <FlatWorldUIHandler>();
// And the location too:
Handler.Location = new Rect(0, 0, widthPX, heightPX);
// Apply aspect:
Handler.Aspect = (float)widthPX / (float)heightPX;
// Hook up the camera:
Handler.Camera = SourceCamera;
// Next it's time for the texture itself! We're going to try using a RenderTexture first.
RenderTexture renderTexture = null;
#if UNITY_5_5_OR_NEWER
// Create a render texture:
renderTexture = new RenderTexture(widthPX, heightPX, 16, RenderTextureFormat.ARGB32);
// Apply it to the texture:
Texture = renderTexture;
// Hook it up:
SourceCamera.targetTexture = renderTexture;
#else
if (SystemInfo.supportsRenderTextures)
{
// Create a render texture:
renderTexture = new RenderTexture(widthPX, heightPX, 16, RenderTextureFormat.ARGB32);
// Apply it to the texture:
Texture = renderTexture;
// Hook it up:
SourceCamera.targetTexture = renderTexture;
}
else
{
// No RT support. Time to use our workaround instead!
// Create the texture:
Texture2D texture = new Texture2D(widthPX, heightPX);
// Hook it up now:
Handler.Output = texture;
// Apply it:
Texture = texture;
}
#endif
// Change the layer of the gameobject and also the camera.
// Set the culling mask:
if (DefaultLayer == -1)
{
Layer = UI.Layer;
}
else
{
Layer = DefaultLayer;
}
gameObject.transform.position = new Vector3(0f, -150f, GlobalOffset);
GlobalOffset += zSpace + 1f;
}
