jonah/raytracing
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

add color to DielectricMaterial

Browse Source
This commit is contained in:
jbb01 2024-08-06 11:16:14 +02:00
parent 4dfeb133de
commit b96c6db440
4 changed files with 68 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
README.md
View File

@ -32,3 +32,11 @@ java -jar raytracing.jar --samples 50000 --height 1200 CORNELL
```
java -jar raytracing.jar --samples 50000 --height 600 CORNELL_SMOKE
```
### diagramm
![](./docs/diagramm.png)
```
java -jar raytracing.jar --samples 1000 --height 1080 DIAGRAMM
```

BIN
docs/diagramm.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 2.3 MiB

49
src/main/java/eu/jonahbauer/raytracing/Examples.java
View File

@ -30,6 +30,7 @@ public class Examples {
register("LIGHT", Examples::getLight);
register("CORNELL", Examples::getCornellBox);
register("CORNELL_SMOKE", Examples::getCornellBoxSmoke);
register("DIAGRAMM", Examples::getDiagramm);
}
public static @NotNull IntFunction<Example> getByName(@NotNull String name) {
@ -202,6 +203,54 @@ public class Examples {
);
}
public static @NotNull Example getDiagramm(int height) {
if (height <= 0) height = 450;
record Partei(String name, Color color, double stimmen) { }
var data = List.of(
new Partei("CDU", new Color(0x00, 0x4B, 0x76), 18.9),
new Partei("SPD", new Color(0xC0, 0x00, 0x3C), 25.7),
new Partei("AfD", new Color(0x80, 0xCD, 0xEC), 10.3),
new Partei("FDP", new Color(0xF7, 0xBB, 0x3D), 11.5),
new Partei("DIE LINKE", new Color(0x5F, 0x31, 0x6E), 4.9),
new Partei("GRÜNE", new Color(0x00, 0x85, 0x4A), 14.8),
new Partei("CSU", new Color(0x00, 0x77, 0xB6), 5.2)
);
var white = new LambertianMaterial(new Color(.99, .99, .99));
var count = data.size();
var size = 75d;
var spacing = 50d;
var x = (count + 1) * spacing + count * size + 1000;
var y = 500 + 1000;
var z = 2 * spacing + size + 1000;
var objects = new ArrayList<Hittable>();
objects.add(new Parallelogram(new Vec3(0, 0, 0), new Vec3(x, 0, 0), new Vec3(0, y, 0), white));
objects.add(new Parallelogram(new Vec3(0, 0, 0), new Vec3(0, 0, z), new Vec3(x, 0, 0), white));
objects.add(new Parallelogram(new Vec3(0, 0, 0), new Vec3(0, y, 0), new Vec3(0, 0, z), white));
for (int i = 0; i < data.size(); i++) {
var partei = data.get(i);
objects.add(Hittables.box(
new Vec3((i + 1) * spacing + i * size, 0, spacing),
new Vec3((i + 1) * spacing + (i + 1) * size, partei.stimmen() * 15, spacing + size),
new DielectricMaterial(1.5, partei.color())
));
}
return new Example(
new Scene(new Color(1.25, 1.25, 1.25), objects),
SimpleCamera.builder()
.withImage(height * 16 / 9, height)
.withPosition(new Vec3(700, 250, 800))
.withTarget(new Vec3(500, 200, 0))
.withFieldOfView(Math.toRadians(40))
.build()
);
}
private static @NotNull SkyBox getSkyBox() {
return SkyBox.gradient(new Color(0.5, 0.7, 1.0), Color.WHITE);
}

13
src/main/java/eu/jonahbauer/raytracing/render/material/DielectricMaterial.java
View File

@ -6,9 +6,18 @@ import eu.jonahbauer.raytracing.render.Color;
import eu.jonahbauer.raytracing.scene.HitResult;
import org.jetbrains.annotations.NotNull;
import java.util.Objects;
import java.util.Optional;
public record DielectricMaterial(double refractionIndex) implements Material {
public record DielectricMaterial(double refractionIndex, @NotNull Color albedo) implements Material {
public DielectricMaterial(double refractionIndex) {
this(refractionIndex, Color.WHITE);
}
public DielectricMaterial {
Objects.requireNonNull(albedo, "albedo");
}
@Override
public @NotNull Optional<ScatterResult> scatter(@NotNull Ray ray, @NotNull HitResult hit) {
var ri = hit.frontFace() ? (1 / refractionIndex) : refractionIndex;
@ -20,7 +29,7 @@ public record DielectricMaterial(double refractionIndex) implements Material {
var newDirection = (reflect ? Optional.<Vec3>empty() : Vec3.refract(ray.direction(), hit.normal(), ri))
.orElseGet(() -> Vec3.reflect(ray.direction(), hit.normal()));
return Optional.of(new ScatterResult(new Ray(hit.position(), newDirection), Color.WHITE));
return Optional.of(new ScatterResult(new Ray(hit.position(), newDirection), albedo));
}
private double reflectance(double cos) {