Sha256: 8fd02c982ad5632e0a3fb609b37e0704c41ac3d50eef97449dc46ba87113e110
Contents?: true
Size: 1.38 KB
Versions: 6
Compression:
Stored size: 1.38 KB
Contents
package org.sunflow.image.formats;
import org.sunflow.image.Bitmap;
import org.sunflow.image.Color;
public class BitmapRGBE extends Bitmap {
private int w, h;
private int[] data;
private static final float[] EXPONENT = new float[256];
static {
EXPONENT[0] = 0;
for (int i = 1; i < 256; i++) {
float f = 1.0f;
int e = i - (128 + 8);
if (e > 0) {
for (int j = 0; j < e; j++) {
f *= 2.0f;
}
} else {
for (int j = 0; j < -e; j++) {
f *= 0.5f;
}
}
EXPONENT[i] = f;
}
}
public BitmapRGBE(int w, int h, int[] data) {
this.w = w;
this.h = h;
this.data = data;
}
@Override
public int getWidth() {
return w;
}
@Override
public int getHeight() {
return h;
}
@Override
public Color readColor(int x, int y) {
int rgbe = data[x + y * w];
float f = EXPONENT[rgbe & 0xFF];
float r = f * ((rgbe >>> 24) + 0.5f);
float g = f * (((rgbe >> 16) & 0xFF) + 0.5f);
float b = f * (((rgbe >> 8) & 0xFF) + 0.5f);
return new Color(r, g, b);
}
@Override
public float readAlpha(int x, int y) {
return 1;
}
}
Version data entries
6 entries across 6 versions & 1 rubygems