Compare commits
6 Commits
00fbf4e4f1
...
533461204a
| Author | SHA1 | Date |
|---|---|---|
 jbb01
|
533461204a | 5 months ago |
|
jbb01
|
b8aae8c2e5 | 5 months ago |
|
jbb01
|
9eb8afcb59 | 5 months ago |
|
jbb01
|
75c56c0032 | 5 months ago |
|
jbb01
|
903ab1409b | 5 months ago |
|
jbb01
|
791ee606c4 | 5 months ago |
@ -1,135 +0,0 @@
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package eu.jonahbauer.raytracing.render;
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import eu.jonahbauer.raytracing.render.canvas.Canvas;
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import eu.jonahbauer.raytracing.render.spectral.colors.ColorSpaces;
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import org.jetbrains.annotations.NotNull;
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import java.io.*;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.zip.CRC32;
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import java.util.zip.CheckedOutputStream;
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import java.util.zip.DeflaterOutputStream;
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public enum ImageFormat {
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PPM {
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@Override
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public void write(@NotNull Canvas image, @NotNull OutputStream out) throws IOException {
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try (var writer = new BufferedWriter(new OutputStreamWriter(out, StandardCharsets.US_ASCII))) {
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writer.write("P3\n");
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writer.write(String.valueOf(image.getWidth()));
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writer.write(" ");
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writer.write(String.valueOf(image.getHeight()));
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writer.write("\n255\n");
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for (int y = 0; y < image.getHeight(); y++) {
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for (int x = 0; x < image.getWidth(); x++) {
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var color = image.getRGB(x, y, ColorSpaces.sRGB);
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writer.write(String.valueOf(color.red()));
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writer.write(" ");
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writer.write(String.valueOf(color.green()));
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writer.write(" ");
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writer.write(String.valueOf(color.blue()));
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writer.write("\n");
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}
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}
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}
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}
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},
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PNG {
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private static final byte[] MAGIC = new byte[] { (byte) 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A };
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private static final int IHDR_LENGTH = 13;
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private static final int IHDR_TYPE = 0x49484452;
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private static final int IDAT_TYPE = 0x49444154;
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private static final int IEND_TYPE = 0x49454E44;
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private static final int IEND_CRC = 0xAE426082;
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@Override
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public void write(@NotNull Canvas image, @NotNull OutputStream out) throws IOException {
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try (var data = new NoCloseDataOutputStream(out); var _ = data.closeable()) {
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data.write(MAGIC);
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writeIHDR(image, data);
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writeIDAT(image, data);
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writeIEND(image, data);
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}
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}
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private void writeIHDR(@NotNull Canvas image, @NotNull DataOutputStream data) throws IOException {
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data.writeInt(IHDR_LENGTH);
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try (
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var crc = new CheckedOutputStream(data, new CRC32());
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var ihdr = new DataOutputStream(crc)
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) {
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ihdr.writeInt(IHDR_TYPE);
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ihdr.writeInt(image.getWidth()); // image width
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ihdr.writeInt(image.getHeight()); // image height
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ihdr.writeByte(8); // bit depth
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ihdr.writeByte(2); // color type
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ihdr.writeByte(0); // compression method
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ihdr.writeByte(0); // filter method
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ihdr.writeByte(0); // interlace method
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ihdr.flush();
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data.writeInt((int) crc.getChecksum().getValue());
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}
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}
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private void writeIDAT(@NotNull Canvas image, @NotNull DataOutputStream data) throws IOException {
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try (
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var baos = new ByteArrayOutputStream();
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var crc = new CheckedOutputStream(baos, new CRC32());
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var idat = new DataOutputStream(crc)
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) {
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idat.writeInt(IDAT_TYPE);
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try (var deflate = new DataOutputStream(new DeflaterOutputStream(idat))) {
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for (int y = 0; y < image.getHeight(); y++) {
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deflate.writeByte(0); // filter type
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for (int x = 0; x < image.getWidth(); x++) {
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var pixel = image.getRGB(x, y, ColorSpaces.sRGB);
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deflate.writeByte(pixel.red());
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deflate.writeByte(pixel.green());
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deflate.writeByte(pixel.blue());
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}
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}
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}
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var bytes = baos.toByteArray();
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data.writeInt(bytes.length - 4); // don't include type in length
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data.write(bytes);
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data.writeInt((int) crc.getChecksum().getValue());
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}
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}
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private void writeIEND(@NotNull Canvas image, @NotNull DataOutputStream data) throws IOException {
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data.writeInt(0);
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data.writeInt(IEND_TYPE);
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data.writeInt(IEND_CRC);
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}
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private static class NoCloseDataOutputStream extends DataOutputStream {
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public NoCloseDataOutputStream(OutputStream out) {
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super(out);
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}
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@Override
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public void close() {
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// do nothing
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}
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public Closeable closeable() {
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return super::close;
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}
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}
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},
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;
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public void write(@NotNull Canvas image, @NotNull Path path) throws IOException {
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try (var out = Files.newOutputStream(path)) {
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write(image, out);
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}
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}
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public abstract void write(@NotNull Canvas image, @NotNull OutputStream out) throws IOException;
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}
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@ -1,4 +1,4 @@
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package eu.jonahbauer.raytracing.render.spectral.colors;
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package eu.jonahbauer.raytracing.render.color;
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/**
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* A pair of chromaticity coordinates in the xyY color space
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@ -1,6 +1,6 @@
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package eu.jonahbauer.raytracing.render.spectral.colors;
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package eu.jonahbauer.raytracing.render.color;
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import eu.jonahbauer.raytracing.render.spectral.spectrum.Spectrum;
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import eu.jonahbauer.raytracing.render.spectrum.Spectrum;
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/**
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* A function of the form {@code s(p(x))} where {@code p} is a polynomial of second degree and {@code s} is the sigmoid
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@ -1,4 +1,4 @@
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package eu.jonahbauer.raytracing.render.spectral.colors;
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package eu.jonahbauer.raytracing.render.color;
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import org.jetbrains.annotations.NotNull;
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@ -1,8 +1,8 @@
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package eu.jonahbauer.raytracing.render.spectral.colors;
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package eu.jonahbauer.raytracing.render.color;
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import eu.jonahbauer.raytracing.math.Matrix3;
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import eu.jonahbauer.raytracing.math.Vec3;
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import eu.jonahbauer.raytracing.render.spectral.spectrum.Spectrum;
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import eu.jonahbauer.raytracing.render.spectrum.Spectrum;
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import org.jetbrains.annotations.NotNull;
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import java.io.IOException;
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@ -0,0 +1,8 @@
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package eu.jonahbauer.raytracing.render.color;
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import org.jetbrains.annotations.NotNull;
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public interface TransferFunction {
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@NotNull ColorRGB decode(@NotNull ColorRGB rgb);
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@NotNull ColorRGB encode(@NotNull ColorRGB rgb);
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}
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@ -0,0 +1,50 @@
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package eu.jonahbauer.raytracing.render.color;
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import org.jetbrains.annotations.NotNull;
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public final class TransferFunctions {
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public static final @NotNull TransferFunction sRGB = new ComponentTransferFunction() {
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@Override
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protected double encode(double value) {
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if (value <= 0.0031308) return 12.92 * value;
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return 1.055 * Math.pow(value, 1. / 2.4) - 0.055;
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}
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@Override
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protected double decode(double value) {
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if (value <= 0.04045) return value / 12.92;
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return Math.pow((value + 0.055) / 1.055, 2.4d);
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}
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};
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public static final @NotNull TransferFunction LINEAR = new TransferFunction() {
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@Override
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public @NotNull ColorRGB encode(@NotNull ColorRGB rgb) {
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return rgb;
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}
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@Override
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public @NotNull ColorRGB decode(@NotNull ColorRGB rgb) {
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return rgb;
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}
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};
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private TransferFunctions() {
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throw new UnsupportedOperationException();
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}
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private abstract static class ComponentTransferFunction implements TransferFunction {
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@Override
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public final @NotNull ColorRGB decode(@NotNull ColorRGB rgb) {
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return new ColorRGB(decode(rgb.r()), decode(rgb.g()), decode(rgb.b()));
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}
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@Override
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public final @NotNull ColorRGB encode(@NotNull ColorRGB rgb) {
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return new ColorRGB(encode(rgb.r()), encode(rgb.g()), encode(rgb.b()));
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}
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protected abstract double encode(double value);
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protected abstract double decode(double value);
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}
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}
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|
Before Width: | Height: | Size: 4.6 KiB After Width: | Height: | Size: 4.6 KiB |
@ -0,0 +1,19 @@
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package eu.jonahbauer.raytracing.render.image;
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import eu.jonahbauer.raytracing.render.canvas.Canvas;
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import org.jetbrains.annotations.NotNull;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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public interface ImageWriter {
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default void write(@NotNull Canvas image, @NotNull Path path) throws IOException {
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try (var out = Files.newOutputStream(path)) {
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write(image, out);
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}
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}
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void write(@NotNull Canvas canvas, @NotNull OutputStream out) throws IOException;
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}
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@ -0,0 +1,107 @@
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package eu.jonahbauer.raytracing.render.image;
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import eu.jonahbauer.raytracing.render.canvas.Canvas;
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import eu.jonahbauer.raytracing.render.color.ColorSpace;
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import eu.jonahbauer.raytracing.render.color.ColorSpaces;
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import org.jetbrains.annotations.NotNull;
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import java.io.*;
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import java.util.Objects;
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import java.util.zip.CRC32;
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import java.util.zip.CheckedOutputStream;
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import java.util.zip.DeflaterOutputStream;
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public class PNGImageWriter implements ImageWriter {
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public static final @NotNull PNGImageWriter sRGB = new PNGImageWriter(ColorSpaces.sRGB);
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private static final byte[] MAGIC = new byte[] { (byte) 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A };
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private static final int IHDR_LENGTH = 13;
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private static final int IHDR_TYPE = 0x49484452;
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private static final int IDAT_TYPE = 0x49444154;
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private static final int IEND_TYPE = 0x49454E44;
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private static final int IEND_CRC = 0xAE426082;
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private final @NotNull ColorSpace cs;
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public PNGImageWriter(@NotNull ColorSpace cs) {
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this.cs = Objects.requireNonNull(cs, "cs");
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}
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@Override
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public void write(@NotNull Canvas image, @NotNull OutputStream out) throws IOException {
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try (var data = new NoCloseDataOutputStream(out); var _ = data.closeable()) {
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data.write(MAGIC);
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writeIHDR(image, data);
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writeIDAT(image, data);
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writeIEND(image, data);
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}
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}
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private void writeIHDR(@NotNull Canvas image, @NotNull DataOutputStream data) throws IOException {
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data.writeInt(IHDR_LENGTH);
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try (
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var crc = new CheckedOutputStream(data, new CRC32());
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var ihdr = new DataOutputStream(crc)
|
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) {
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ihdr.writeInt(IHDR_TYPE);
|
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ihdr.writeInt(image.getWidth()); // image width
|
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ihdr.writeInt(image.getHeight()); // image height
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ihdr.writeByte(8); // bit depth
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ihdr.writeByte(2); // color type
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ihdr.writeByte(0); // compression method
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ihdr.writeByte(0); // filter method
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ihdr.writeByte(0); // interlace method
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ihdr.flush();
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data.writeInt((int) crc.getChecksum().getValue());
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}
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}
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private void writeIDAT(@NotNull Canvas image, @NotNull DataOutputStream data) throws IOException {
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try (
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var baos = new ByteArrayOutputStream();
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var crc = new CheckedOutputStream(baos, new CRC32());
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var idat = new DataOutputStream(crc)
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) {
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idat.writeInt(IDAT_TYPE);
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try (var deflate = new DataOutputStream(new DeflaterOutputStream(idat))) {
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for (int y = 0; y < image.getHeight(); y++) {
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deflate.writeByte(0); // filter type
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for (int x = 0; x < image.getWidth(); x++) {
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var pixel = cs.encode(image.getRGB(x, y, cs));
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deflate.writeByte(pixel.red());
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deflate.writeByte(pixel.green());
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deflate.writeByte(pixel.blue());
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}
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}
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}
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var bytes = baos.toByteArray();
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data.writeInt(bytes.length - 4); // don't include type in length
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data.write(bytes);
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data.writeInt((int) crc.getChecksum().getValue());
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}
|
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}
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private void writeIEND(@NotNull Canvas image, @NotNull DataOutputStream data) throws IOException {
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data.writeInt(0);
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data.writeInt(IEND_TYPE);
|
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data.writeInt(IEND_CRC);
|
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}
|
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|
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private static class NoCloseDataOutputStream extends DataOutputStream {
|
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public NoCloseDataOutputStream(OutputStream out) {
|
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super(out);
|
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}
|
||||
|
||||
@Override
|
||||
public void close() {
|
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// do nothing
|
||||
}
|
||||
|
||||
public Closeable closeable() {
|
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return super::close;
|
||||
}
|
||||
}
|
||||
}
|
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@ -0,0 +1,46 @@
|
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package eu.jonahbauer.raytracing.render.image;
|
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|
||||
import eu.jonahbauer.raytracing.render.canvas.Canvas;
|
||||
import eu.jonahbauer.raytracing.render.color.ColorSpace;
|
||||
import eu.jonahbauer.raytracing.render.color.ColorSpaces;
|
||||
import org.jetbrains.annotations.NotNull;
|
||||
|
||||
import java.io.BufferedWriter;
|
||||
import java.io.IOException;
|
||||
import java.io.OutputStream;
|
||||
import java.io.OutputStreamWriter;
|
||||
import java.nio.charset.StandardCharsets;
|
||||
import java.util.Objects;
|
||||
|
||||
public class PPMImageWriter implements ImageWriter {
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public static final PPMImageWriter sRGB = new PPMImageWriter(ColorSpaces.sRGB);
|
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|
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private final @NotNull ColorSpace cs;
|
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|
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public PPMImageWriter(@NotNull ColorSpace cs) {
|
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this.cs = Objects.requireNonNull(cs, "cs");
|
||||
}
|
||||
|
||||
@Override
|
||||
public void write(@NotNull Canvas image, @NotNull OutputStream out) throws IOException {
|
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try (var writer = new BufferedWriter(new OutputStreamWriter(out, StandardCharsets.US_ASCII))) {
|
||||
writer.write("P3\n");
|
||||
writer.write(String.valueOf(image.getWidth()));
|
||||
writer.write(" ");
|
||||
writer.write(String.valueOf(image.getHeight()));
|
||||
writer.write("\n255\n");
|
||||
|
||||
for (int y = 0; y < image.getHeight(); y++) {
|
||||
for (int x = 0; x < image.getWidth(); x++) {
|
||||
var color = cs.encode(image.getRGB(x, y, cs));
|
||||
writer.write(String.valueOf(color.red()));
|
||||
writer.write(" ");
|
||||
writer.write(String.valueOf(color.green()));
|
||||
writer.write(" ");
|
||||
writer.write(String.valueOf(color.blue()));
|
||||
writer.write("\n");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,25 @@
|
||||
package eu.jonahbauer.raytracing.render.material;
|
||||
|
||||
import eu.jonahbauer.raytracing.render.color.ColorSpaces;
|
||||
import eu.jonahbauer.raytracing.render.material.DielectricMaterial.SellmeierRefractiveIndex;
|
||||
import eu.jonahbauer.raytracing.render.spectrum.Spectra;
|
||||
import eu.jonahbauer.raytracing.render.texture.CheckerTexture;
|
||||
import org.jetbrains.annotations.NotNull;
|
||||
|
||||
public final class Materials {
|
||||
public static final @NotNull Material GLASS = new DielectricMaterial(new SellmeierRefractiveIndex(
|
||||
1.0361212, 0.231792344, 1.01046945,
|
||||
6.00069867E-3, 2.00179144E-2, 1.03560653E2
|
||||
));
|
||||
|
||||
public static final @NotNull Material MIRROR = new MetallicMaterial(ColorSpaces.sRGB.albedo(0.7, 0.7, 0.7));
|
||||
|
||||
public static final @NotNull Material DEBUG = new DirectionalMaterial(
|
||||
new LambertianMaterial(new CheckerTexture(50.0, ColorSpaces.sRGB.albedo(1.0, 0.0, 1.0), Spectra.BLACK)),
|
||||
new LambertianMaterial(new CheckerTexture(50.0, ColorSpaces.sRGB.albedo(1.0, 1.0, 1.0), Spectra.BLACK))
|
||||
);
|
||||
|
||||
private Materials() {
|
||||
throw new UnsupportedOperationException();
|
||||
}
|
||||
}
|
||||
@ -1,4 +1,4 @@
|
||||
package eu.jonahbauer.raytracing.render.spectral.spectrum;
|
||||
package eu.jonahbauer.raytracing.render.spectrum;
|
||||
|
||||
public final class BlackbodySpectrum implements Spectrum {
|
||||
/**
|
||||
@ -1,4 +1,4 @@
|
||||
package eu.jonahbauer.raytracing.render.spectral.spectrum;
|
||||
package eu.jonahbauer.raytracing.render.spectrum;
|
||||
|
||||
/**
|
||||
* A constant spectrum.
|
||||
@ -1,4 +1,4 @@
|
||||
package eu.jonahbauer.raytracing.render.spectral.spectrum;
|
||||
package eu.jonahbauer.raytracing.render.spectrum;
|
||||
|
||||
import org.jetbrains.annotations.NotNull;
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
package eu.jonahbauer.raytracing.render.spectral.spectrum;
|
||||
package eu.jonahbauer.raytracing.render.spectrum;
|
||||
|
||||
import java.util.Arrays;
|
||||
|
||||
@ -1,10 +1,9 @@
|
||||
package eu.jonahbauer.raytracing.render.spectral;
|
||||
package eu.jonahbauer.raytracing.render.spectrum;
|
||||
|
||||
import eu.jonahbauer.raytracing.math.IVec;
|
||||
import eu.jonahbauer.raytracing.render.spectral.colors.ColorSpace;
|
||||
import eu.jonahbauer.raytracing.render.spectral.colors.ColorXYZ;
|
||||
import eu.jonahbauer.raytracing.render.spectral.spectrum.Spectrum;
|
||||
import eu.jonahbauer.raytracing.render.spectral.colors.ColorRGB;
|
||||
import eu.jonahbauer.raytracing.render.color.ColorSpace;
|
||||
import eu.jonahbauer.raytracing.render.color.ColorXYZ;
|
||||
import eu.jonahbauer.raytracing.render.color.ColorRGB;
|
||||
import org.jetbrains.annotations.NotNull;
|
||||
|
||||
import java.util.Arrays;
|
||||
@ -1,4 +1,4 @@
|
||||
package eu.jonahbauer.raytracing.render.spectral.spectrum;
|
||||
package eu.jonahbauer.raytracing.render.spectrum;
|
||||
|
||||
import org.jetbrains.annotations.NotNull;
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
package eu.jonahbauer.raytracing.render.spectral.spectrum;
|
||||
package eu.jonahbauer.raytracing.render.spectrum;
|
||||
|
||||
import eu.jonahbauer.raytracing.render.spectral.colors.ColorXYZ;
|
||||
import eu.jonahbauer.raytracing.render.color.ColorXYZ;
|
||||
import org.jetbrains.annotations.NotNull;
|
||||
|
||||
import java.io.BufferedReader;
|
||||
@ -1,4 +1,4 @@
|
||||
package eu.jonahbauer.raytracing.render.spectral.spectrum;
|
||||
package eu.jonahbauer.raytracing.render.spectrum;
|
||||
|
||||
import org.jetbrains.annotations.NotNull;
|
||||
|
||||
Loading…
Reference in New Issue