jonah/raytracing
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add antialiasing

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jbb01 2024-08-03 02:42:15 +02:00
parent af3dc8dac7
commit 9d204f6aa4
1 changed files with 20 additions and 4 deletions
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24
src/main/java/eu/jonahbauer/raytracing/render/Camera.java
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@ -21,6 +21,9 @@ public final class Camera {
private final @NotNull Vec3 origin;
private final @NotNull Vec3 direction;
// antialiasing
private final int samplesPerPixel = 100;
// internal properties
private final @NotNull Vec3 pixelU;
private final @NotNull Vec3 pixelV;
@ -86,10 +89,20 @@ public final class Camera {
var image = new Image(width, height);
for (int y = 0; y < height; y++) {
var ray = getRay(x, y);
var color = getColor(scene, ray);
image.set(x, y, color);
for (int x = 0; x < width; x++) {
var r = 0d;
var g = 0d;
var b = 0d;
for (int i = 0; i < samplesPerPixel; i++) {
var ray = getRay(x, y);
var color = getColor(scene, ray);
r += color.r();
g += color.g();
b += color.b();
}
image.set(x, y, new Color(r / samplesPerPixel, g / samplesPerPixel, b / samplesPerPixel));
}
}
@ -103,7 +116,10 @@ public final class Camera {
private @NotNull Vec3 getPixel(int x, int y) {
Objects.checkIndex(x, width);
Objects.checkIndex(y, height);
return pixel00.plus(pixelU.times(x)).plus(pixelV.times(y));
double dx = x + Math.random() - 0.5;
double dy = y + Math.random() - 0.5;
return pixel00.plus(pixelU.times(dx)).plus(pixelV.times(dy));
}
private @NotNull Color getColor(@NotNull Scene scene, @NotNull Ray ray) {