Camera bounds based on texture

Unity Engine
1

Hi, all,

I’m working on a camera script that will enable me to “paint” camera bounds using a grayscale gradient image. In this way, I basically am using GetPixel(x,y).grayscale (or .r, .g, .b for that matter) to drive a coefficient to my speed. The camera should slow to a halt as it reaches its “bounds,” (black on the texture) but regain speed as it moves in a different direction.

As a start, I’m using the texture to drive the XZ plane in Unity. Eventually, I’ll tackle Y, either with a second texture, or splitting it into separate channels.

I’ve been testing this for a while, but I’m running into a problem. The images I’m using are throwing an “Unsupported image format” error. It says it needs to be either a ARGB32, RGB24, or Alpha8. I know for a fact that my texture is RGB24. As a result of the error, (or in addition to it) I’m only pulling a result of 1, regardless of the position of the camera.

Here’s my code so far:

var speed = 6.0;
var xzBounds : Texture2D;
var texSize = 512;

private var moveDirection = Vector3.zero;

function FixedUpdate() {
    // Transform X and Z camera position into texture space, using the center of the image as the origin.
	curX = transform.position.x + (texSize / 2);
	curZ = transform.position.z + (texSize / 2);
    
    texSpeed = xzBounds.GetPixel(curX, curZ).grayscale;
	
    moveDirection = new Vector3(Input.GetAxis("Horizontal"), Input.GetAxis("UpDown"), Input.GetAxis("Vertical"));
	moveDirection = transform.TransformDirection(moveDirection);
	moveDirection *= speed;
	moveDirection *=texSpeed;
	
	//Debug message to console to check texture data
	print (texSpeed);

	// Move the controller
	var controller : CharacterController = GetComponent(CharacterController);
	var flags = controller.Move(moveDirection * Time.deltaTime);
}

@script RequireComponent(CharacterController)

I’ve also attached a JPEG and TIF of my test image.

226515–8164–$bounds_123.tif (768 KB)

226515--8165--$boundsj_232.jpg
226515--8165--$boundsj_232.jpg512×512 4.03 KB

2

Is there a line elsewhere in the code that says var texSpeed : float;

3

No, but I was under the impression that since it was only used in the scope of my FixedUpdate() function, I wouldn’t need it. Adding this doesn’t seem to affect it. The error remains and my output is still 1.

4

Which file format are you using for the image?

5

I’m using bounds.tif. (24-bit RGB) The odd thing is, when I pick a different texture, regardless of its bit depth, I get no change.

I’ll continue working with it and let you know what I find. Again, this may just be a result of me not knowing exactly what Unity’s looking for.