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Implement channel noise sampler

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Astrash
2023-05-01 13:58:56 +10:00
parent 50fc589001
commit 39d21fbe08
3 changed files with 83 additions and 0 deletions
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2
common/addons/library-image/src/main/java/com/dfsek/terra/addons/image/ImageLibraryAddon.java
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@@ -4,6 +4,7 @@ import com.dfsek.tectonic.api.config.template.object.ObjectTemplate;
import java.util.function.Supplier;
import com.dfsek.terra.addons.image.config.noisesampler.ChannelNoiseSamplerTemplate;
import com.dfsek.terra.addons.image.config.noisesampler.DistanceTransformNoiseSamplerTemplate;
import com.dfsek.terra.addons.image.config.image.ImageTemplate;
import com.dfsek.terra.addons.image.config.image.StitchedImageTemplate;
@@ -65,6 +66,7 @@ public class ImageLibraryAddon implements AddonInitializer {
CheckedRegistry<Supplier<ObjectTemplate<NoiseSampler>>> noiseRegistry = event.getPack().getOrCreateRegistry(
NOISE_SAMPLER_TOKEN);
noiseRegistry.register(addon.key("DISTANCE_TRANSFORM"), DistanceTransformNoiseSamplerTemplate::new);
noiseRegistry.register(addon.key("CHANNEL"), ChannelNoiseSamplerTemplate::new);
})
.then(event -> {
CheckedRegistry<Supplier<ObjectTemplate<ColorSampler>>> colorSamplerRegistry = event.getPack().getOrCreateRegistry(

41
common/addons/library-image/src/main/java/com/dfsek/terra/addons/image/config/noisesampler/ChannelNoiseSamplerTemplate.java Normal file
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@@ -0,0 +1,41 @@
package com.dfsek.terra.addons.image.config.noisesampler;
import com.dfsek.tectonic.api.config.template.annotations.Default;
import com.dfsek.tectonic.api.config.template.annotations.Value;
import com.dfsek.tectonic.api.config.template.object.ObjectTemplate;
import com.dfsek.terra.addons.image.colorsampler.ColorSampler;
import com.dfsek.terra.addons.image.noisesampler.ChannelNoiseSampler;
import com.dfsek.terra.addons.image.util.ColorUtil.Channel;
import com.dfsek.terra.api.noise.NoiseSampler;
public class ChannelNoiseSamplerTemplate implements ObjectTemplate<NoiseSampler> {
@Value("color-sampler")
private ColorSampler colorSampler;
@Value("channel")
private Channel channel;
/*
* If the channel should be normalized to range [-1, 1] or not
*/
@Value("normalize")
@Default
private boolean normalize = true;
/*
* Whether to multiply color channels by the alpha channel or not. If users
* are expecting pixel transparency to reduce the output value then this should
* be set to true.
*/
@Value("premultiply")
@Default
private boolean premultiply = false;
@Override
public NoiseSampler get() {
return new ChannelNoiseSampler(colorSampler, channel, normalize, premultiply);
}
}

40
common/addons/library-image/src/main/java/com/dfsek/terra/addons/image/noisesampler/ChannelNoiseSampler.java Normal file
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@@ -0,0 +1,40 @@
package com.dfsek.terra.addons.image.noisesampler;
import com.dfsek.terra.addons.image.colorsampler.ColorSampler;
import com.dfsek.terra.addons.image.util.ColorUtil;
import com.dfsek.terra.addons.image.util.ColorUtil.Channel;
import com.dfsek.terra.api.noise.NoiseSampler;
import static com.dfsek.terra.addons.image.util.MathUtil.lerp;
public class ChannelNoiseSampler implements NoiseSampler {
private final ColorSampler colorSampler;
private final Channel channel;
private final boolean normalize;
private final boolean premultiply;
public ChannelNoiseSampler(ColorSampler colorSampler, Channel channel, boolean normalize, boolean premultiply) {
this.colorSampler = colorSampler;
this.channel = channel;
this.normalize = normalize;
this.premultiply = premultiply;
}
@Override
public double noise(long seed, double x, double y) {
int sample = colorSampler.apply((int) x, (int) y);
int premultiplied = premultiply ? ColorUtil.premultiply(sample) : sample;
double channelValue = channel.from(premultiplied);
return normalize ? lerp(channelValue, 0, -1, 255, 1) : channelValue;
}
@Override
public double noise(long seed, double x, double y, double z) {
return noise(seed, x, z);
}
}