koobas.hobune.stream
Copy pixel color values to array
Hello,
I'm trying to read individual pixel values from a 1024x1024 texture to use as terrain data but Unity crashes with an Out of Memory error.
I'm using this code:
var www : WWW = new WWW("http://ex2.localhost/heightmap.png");
yield(www);
var map :float[,] = new float[1024,1024];
for (var y:int=0; y<1024;y++) {
for (var x:int=0; x<1024;x++) {
map[x,y] = www.texture.GetPixel(x,y).grayscale;
}
}
What is the correct way to do it?
I also looked into GetPixels, but individual pixel color doesn't seem to be available.
Thanks.
Best Answer
Every time you do www.texture you get a new copy. Instead take a reference first:
var www : WWW = new WWW("http://ex2.localhost/heightmap.png");
yield www;
var map :float[,] = new float[1024,1024];
var tex = www.texture;
for (var y:int=0; y<1024;y++) {
for (var x:int=0; x<1024;x++) {
map[x,y] = tex.GetPixel(x,y).grayscale;
}
}
