void detectHoles()
{
renderTexture.DiscardContents();
RenderTexture.active = camera.GetComponent <Camera> ().targetTexture;
camera.GetComponent <Camera> ().Render();
texture.filterMode = FilterMode.Point;
texture.wrapMode = TextureWrapMode.Clamp;
texture.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
texture.Apply();
for (int i = 0; i < 4; i++)
{
TextureScale.Half(texture);
}
FloodFill.Fill(texture, 0, 0);
FloodFill.Fill(texture, texture.width - 1, 0);
FloodFill.Fill(texture, texture.width - 1, texture.height - 1);
FloodFill.Fill(texture, 0, texture.height - 1);
// holes
ConnectedComponentLabeling ccl = new ConnectedComponentLabeling();
ccl.Process(texture, texture, false, false);
holesPositions = ccl.holesAveragePositions;
holesPositions.Add(new Vector2(0f, 0f));
holesPositions.Add(new Vector2((float)texture.width, 0f));
holesPositions.Add(new Vector2(0f, (float)texture.height));
holesPositions.Add(new Vector2((float)texture.width, (float)texture.height));
}
public override float Evaluate(Representation representation)
{
int texSize = 1024;
RenderTexture renderTexture = new RenderTexture(texSize, texSize, 0);
RenderTexture renderTextureTemp = RenderTexture.active;
GameObject camera = new GameObject("Camera");
camera.transform.position = new Vector3(0, 150f, -300f);
camera.AddComponent <Camera> ();
camera.GetComponent <Camera> ().backgroundColor = Color.white;
camera.GetComponent <Camera> ().orthographic = true;
camera.GetComponent <Camera> ().orthographicSize = 150;
camera.GetComponent <Camera> ().targetTexture = renderTexture;
camera.AddComponent <GrayscaleBinary> ();
camera.GetComponent <GrayscaleBinary> ().shader = Shader.Find("Hidden/GrayscaleBinary");
RenderTexture.active = renderTexture;
camera.GetComponent <Camera> ().Render();
Texture2D texture = new Texture2D(renderTexture.width, renderTexture.height, TextureFormat.RGB24, false);
texture.filterMode = FilterMode.Point;
texture.wrapMode = TextureWrapMode.Clamp;
texture.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
texture.Apply();
TextureScale.Half(texture);
texSize /= 2;
// texture to copy
Texture2D tempTex = new Texture2D(texture.width, texture.height);
tempTex.SetPixels(texture.GetPixels());
// fill
FloodFill.Fill(tempTex, 0, 0);
FloodFill.Fill(tempTex, tempTex.width - 1, 0);
FloodFill.Fill(tempTex, tempTex.width - 1, tempTex.height - 1);
FloodFill.Fill(tempTex, 0, tempTex.height - 1);
// holes
ConnectedComponentLabeling ccl = new ConnectedComponentLabeling();
int holes = ccl.Process(tempTex, texture, false);
RenderTexture.active = renderTextureTemp;
GameObject.DestroyImmediate(camera);
return(holes * (1f + Mathf.Exp(2f)) / (28.4103f * Mathf.Exp(2f)) + 43.9867f / 28.4103f);
}
