I want my game script to detect mouse clicks everywhere on my screen, except one corner where I have a pair of buttons to control the sound and will be handled separately. To help identify this corner, I've created a soundPanel object with the Rect Transform component (available in the Unity 4 Beta 17+) and have sized/positioned it appropriately in the editor in my UI layer.
In my game's script, I have passed in this corner object, and tried using it in the following way:
bool tap = (Input.GetMouseButtonDown(0) || Input.GetMouseButtonUp(0))
&& !soundPanel.rect.Contains(Input.mousePosition);
Clicking in the soundPanel still triggers a tap. I figured this is because the mouse position and soundPanel.Rect are not in the same coordinate space. Since the documentation on the new Unity Beta UI is a bit lacking / hard to find, I tried converting the mouse coordinates to everything I could:
if (Input.GetMouseButtonDown(0) || Input.GetMouseButtonUp(0))
{
if (soundPanel.rect.Contains(Input.mousePosition)) { print("Raw"); }
if (soundPanel.rect.Contains(camera.ScreenToViewportPoint(Input.mousePosition))) { print("ScreenToViewportPoint"); }
if (soundPanel.rect.Contains(camera.ScreenToWorldPoint(Input.mousePosition))) { print("ScreenToWorldPoint"); }
if (soundPanel.rect.Contains(camera.ViewportToScreenPoint(Input.mousePosition))) { print("ViewportToScreenPoint"); }
if (soundPanel.rect.Contains(camera.ViewportToWorldPoint(Input.mousePosition))) { print("ViewportToWorldPoint"); }
if (soundPanel.rect.Contains(camera.WorldToScreenPoint(Input.mousePosition))) { print("WorldToScreenPoint"); }
if (soundPanel.rect.Contains(camera.WorldToViewportPoint(Input.mousePosition))) { print("WorldToViewportPoint"); }
print("-------------------");
}
When I click with the above code, "ScreenToViewportPoint" and "ScreenToWorldPoint" print no matter where I click, and no others trigger. I suspect I need to transform the soundPanel somehow.
Here is the Hierarchy, Scene, and Inspector. The selected rect is the soundPanel, and it is in the bottom-right of the UI Canvas:
