[PlutoLib/PlutoShader] The initial implementation of the color API

NEXT_RELEASE_DRAFT.md

@@ -5,6 +5,8 @@
     * Rethink the class loader system.
 * `[PlutoLib]` Redo the resource system
 * `[PlutoLib]` Create a new Color API and port renderer code to it
+    * `[PlutoGUI]` FontRenderer code will not receive these changes
+    as it is awaiting a rewrite anyway
 
 ## Features targeted for 20.2.0.0-alpha.4
 * The stage subsystem
@@ -38,6 +40,11 @@
     instances
     * Allow stages to be inherited from, creating a stack-like structure
 * `[PlutoAudio]` Integrate the Audio API with the Stage API
+* `[PlutoGUI]` Initial implementation of the new font renderer
+    * Full rewrite
+    * High quality font rendering
+        * Subpixel rendering support [?]
+    * Possibly a new system for bitmap fonts
 * Improve upon the support of thread-local Pluto instances
     * The long term goal is to allow an unlimited amount of Pluto applications at any given time
 

README.md

@@ -45,18 +45,18 @@ See `NEXT_RELEASE_DRAFT.md` for details.
 ### Very high priority
 [ *Implemented in the current release.* ]
  * Rewrite the ModLoader
- * Finish PlutoCommandParser
  * Streamline PlutoLib, remove bad APIs and improve code quality
+ * The stage system and automated asset loading
  
 ### High priority
 [ *Implemented in the next release.* ]
+ * Rewrite PlutoGUI
  * Finish PlutoAudio
     * Depends on the stage system
- * The stage system and automated asset loading
+ * Finish PlutoCommandParser
  
 ### Normal priority
 [ *Planned for an upcoming release.* ]
- * Rewrite PlutoGUI
  * The collision system for PlutoStatic
  * Improve image loading capabilities, possibly rewrite PlutoLib#TPL
  
@@ -66,3 +66,7 @@ See `NEXT_RELEASE_DRAFT.md` for details.
     * Alternatively, if this deems too difficult to implement,
     prohibit the creation of more than instance per VM to avoid issues
  * A networking API
+ * Expand upon the Color API
+    * Color mixing and blending
+    * Color transformation
+    * High-performance serialization

UPDATE_NOTES.md

@@ -5,11 +5,17 @@
 * `[PlutoLib]` Added the `@ConstantExpression` annotation
 * `[PlutoLib]` The `RAID#getIDOf` method now returns `OptionalInt` to avoid NPEs
 * `[PlutoLib]` The transitive dependency JOML is now provided by `PlutoLib` instead of `PlutoStatic`
+* `[PlutoLib]` Created a simple Color API
+    * `[PlutoShader]` Added the 8-bit RGBA `Color` class as a counterpart to AWT's `Color` class
+    * `[PlutoShader]` Added the `RGBA` and `RGB` single precision float color objects 
+    * `[PlutoShader]` Added the respective `IRGBA` and `IRGB` read-only interfaces
+    * `[PlutoShader]` Added the `HSBA` and `HSB` single precision float color objects 
+    * `[PlutoShader]` Added methods to convert between HSBA, RGBA, HSB and RGB
+    * `[PlutoShader]` Added the `UniformRGBA` and `UniformRGB` shader uniform types
     
 Awaiting implementation:
 * `[PlutoLib]` Moved `cz.tefek.pluto.io.pluto.pp` to `cz.tefek.pluto.io.plutopackage`
 * `[PlutoLib]` Completely reworked the module system
-* `[PlutoLib]` Created a simple Color API
 
 ## 20.2.0.0-alpha.2
 * `build.gradle` Extracted the version numbers into separate variables

plutolib/src/main/java/cz/tefek/pluto/util/color/Color.java

@@ -0,0 +1,446 @@
+package cz.tefek.pluto.util.color;
+
+import javax.annotation.Nonnull;
+
+/**
+ * TODO
+ *
+ * @since 20.2.0.0-alpha.3
+ * @author 493msi
+ */
+public final class Color
+{
+    // Black and white
+    public static Color WHITE = new Color(255, 255, 255);
+    public static Color BLACK = new Color(0, 0, 0);
+
+    // Shades of gray
+    public static Color VERY_DARK_GRAY = new Color(40, 40, 40);
+    public static Color DARK_GRAY = new Color(85, 85, 85);
+    public static Color GRAY = new Color(128, 128, 128);
+    public static Color SILVER = new Color(192, 192, 192);
+    public static Color LIGHT_GRAY = new Color(212, 212, 212);
+
+    // Basic colors
+    public static Color RED = new Color(255, 0, 0);
+    public static Color GREEN = new Color(0, 255, 0);
+    public static Color BLUE = new Color(0, 0, 255);
+    public static Color YELLOW = new Color(255, 255, 0);
+
+
+    public static Color TRANSPARENT = new Color(0, 0, 0,  0);
+    public static Color TRANSPARENT_WHITE = new Color(255, 255, 255,  0);
+
+    public static Color AMBER = new Color(255, 190, 0);
+    public static Color AMETHYST = new Color(153, 102, 204);
+    public static Color APRICOT = new Color(235, 147, 115);
+    public static Color AZURE = new Color(0, 57, 169);
+    public static Color BROWN = new Color(150, 75, 0);
+    public static Color COBALT = new Color(0, 71, 171);
+    public static Color COPPER = new Color(184, 115, 51);
+    public static Color CORAL_RED = new Color(255, 50, 60);
+    public static Color CORNFLOWER_BLUE = new Color(112, 112, 255);
+    public static Color CRIMSON = new Color(220, 26, 64);
+    public static Color CYAN = new Color(0, 188, 212);
+    public static Color DARK_BROWN = new Color(66, 33, 0);
+    public static Color DARK_GREEN = new Color(0, 150, 0);
+    public static Color LIGHT_AZURE = new Color(0, 128, 255);
+    public static Color LIME = new Color(191, 255, 0);
+    public static Color MAGENTA = new Color(255, 0, 255);
+    public static Color MALACHITE = new Color(11, 218, 81);
+    public static Color NAVY_BLUE = new Color(0, 0, 128);
+    public static Color OBSIDIAN = new Color(16, 18, 29);
+    public static Color ORANGE = new Color(255, 102, 0);
+    public static Color ORANGE_RED = new Color(255, 55, 0);
+    public static Color PEAR = new Color(209, 226, 49);
+    public static Color PINK = new Color(253, 109, 134);
+    public static Color PUMPKIN_ORANGE = new Color(255, 117, 0);
+    public static Color SAPPHIRE = new Color(47, 81, 158);
+    public static Color TEAL = new Color(0, 140, 140);
+    public static Color TURQUOISE = new Color(10, 255, 141);
+
+
+    public static Color PASTEL_PINK = new Color(255, 192, 203);
+    public static Color PASTEL_LIME = new Color(221, 255, 192);
+    public static Color PASTEL_YELLOW = new Color(252, 255, 192);
+    public static Color PASTEL_CYAN = new Color(192, 255, 234);
+    public static Color PASTEL_BLUE = new Color(192, 199, 255);
+    public static Color PASTEL_VIOLET = new Color(192, 199, 255);
+
+    public int red;
+    public int green;
+    public int blue;
+    public int alpha = 255;
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public Color(int red, int green, int blue, int alpha)
+    {
+        this.red = red;
+        this.green = green;
+        this.blue = blue;
+        this.alpha = alpha;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public Color(int red, int green, int blue)
+    {
+        this.red = red;
+        this.green = green;
+        this.blue = blue;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public static Color from(@Nonnull IRGBA colorComponents)
+    {
+        return new Color(Math.round(colorComponents.red() * 255),
+                Math.round(colorComponents.green() * 255),
+                Math.round(colorComponents.blue() * 255),
+                Math.round(colorComponents.alpha() * 255));
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public static Color from(@Nonnull IRGB colorComponents)
+    {
+        return new Color(Math.round(colorComponents.red() * 255),
+                Math.round(colorComponents.green() * 255),
+                Math.round(colorComponents.blue() * 255));
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public static Color from(int color, @Nonnull EnumColorFormat colorFormat)
+    {
+        switch (colorFormat)
+        {
+            case CF_INT_BGR:
+                return new Color(color & 0xff, (color >> 8) & 0xff, (color >> 16) & 0xff);
+            case CF_INT_RGB:
+                return new Color((color >> 16) & 0xff, (color >> 8) & 0xff, color & 0xff);
+            case CF_INT_ABGR:
+                return new Color(color & 0xff, (color >> 8) & 0xff, (color >> 16) & 0xff, (color >> 24) & 0xff);
+            case CF_INT_ARGB:
+                return new Color((color >> 16) & 0xff, (color >> 8) & 0xff, color & 0xff, (color >> 24) & 0xff);
+            case CF_INT_BGRA:
+                return new Color((color >> 8) & 0xff, (color >> 16) & 0xff, (color >> 24) & 0xff, color & 0xff);
+            case CF_INT_RGBA:
+                return new Color((color >> 24) & 0xff, (color >> 16) & 0xff, (color >> 8) & 0xff, color & 0xff);
+            default:
+                throw new UnsupportedOperationException("Use the from(byte[], int, ColorFormat) for byte color formats!");
+        }
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public static Color from(@Nonnull byte[] color, @Nonnull EnumColorFormat colorFormat)
+    {
+        return from(color, 0, colorFormat);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public static Color from(@Nonnull byte[] color, int offset, @Nonnull EnumColorFormat colorFormat)
+    {
+        switch (colorFormat)
+        {
+            case CF_3BYTE_BGR:
+                return new Color(color[offset + 2] & 0xFF, color[offset + 1] & 0xFF, color[offset] & 0xFF);
+            case CF_3BYTE_RGB:
+                return new Color(color[offset] & 0xFF, color[offset + 1] & 0xFF, color[offset + 2] & 0xFF);
+            case CF_4BYTE_ABGR:
+                return new Color(color[offset + 3] & 0xFF, color[offset + 2] & 0xFF, color[offset + 1] & 0xFF, color[offset] & 0xFF);
+            case CF_4BYTE_ARGB:
+                return new Color(color[offset + 1] & 0xFF, color[offset + 2] & 0xFF, color[offset + 3] & 0xFF, color[offset] & 0xFF);
+            case CF_4BYTE_BGRA:
+                return new Color(color[offset + 2] & 0xFF, color[offset + 1] & 0xFF, color[offset] & 0xFF, color[offset + 3] & 0xFF);
+            case CF_4BYTE_RGBA:
+                return new Color(color[offset] & 0xFF, color[offset + 1] & 0xFF, color[offset + 2] & 0xFF, color[offset + 3] & 0xFF);
+            default:
+                throw new UnsupportedOperationException("Use the from(int, ColorFormat) for int color formats!");
+        }
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public int getIntRGBA()
+    {
+        return get(EnumColorFormat.CF_INT_RGBA);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public int getIntARGB()
+    {
+        return get(EnumColorFormat.CF_INT_ARGB);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public int get(@Nonnull EnumColorFormat colorFormat)
+    {
+        switch (colorFormat)
+        {
+            case CF_INT_BGR:
+                return (this.blue << 16) | (this.green << 8) | this.red;
+            case CF_INT_RGB:
+                return (this.red << 16) | (this.green << 8) | this.blue;
+            case CF_INT_ABGR:
+                return (this.alpha << 24) | (this.blue << 16) | (this.green << 8) | this.red;
+            case CF_INT_ARGB:
+                return (this.alpha << 24) | (this.red << 16) | (this.green << 8) | this.blue;
+            case CF_INT_BGRA:
+                return (this.blue << 24) | (this.green << 16) | (this.red << 8) | this.alpha;
+            case CF_INT_RGBA:
+                return (this.red << 24) | (this.green << 16) | (this.blue << 8) | this.alpha;
+            default:
+                throw new UnsupportedOperationException("Use the get(ColorFormat, byte[], int) for byte color formats!");
+        }
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public void get(@Nonnull EnumColorFormat colorFormat, @Nonnull byte[] dataOut)
+    {
+        get(colorFormat, dataOut, 0);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public void get(@Nonnull EnumColorFormat colorFormat, @Nonnull byte[] dataOut, int offset)
+    {
+        switch (colorFormat)
+        {
+            case CF_3BYTE_BGR:
+                dataOut[offset++] = (byte) this.blue;
+                dataOut[offset++] = (byte) this.green;
+                dataOut[offset] = (byte) this.red;
+                break;
+            case CF_3BYTE_RGB:
+                dataOut[offset++] = (byte) this.red;
+                dataOut[offset++] = (byte) this.green;
+                dataOut[offset] = (byte) this.blue;
+                break;
+            case CF_4BYTE_ABGR:
+                dataOut[offset++] = (byte) this.alpha;
+                dataOut[offset++] = (byte) this.blue;
+                dataOut[offset++] = (byte) this.green;
+                dataOut[offset] = (byte) this.red;
+                break;
+            case CF_4BYTE_ARGB:
+                dataOut[offset++] = (byte) this.alpha;
+                dataOut[offset++] = (byte) this.red;
+                dataOut[offset++] = (byte) this.green;
+                dataOut[offset] = (byte) this.blue;
+                break;
+            case CF_4BYTE_BGRA:
+                dataOut[offset++] = (byte) this.blue;
+                dataOut[offset++] = (byte) this.green;
+                dataOut[offset++] = (byte) this.red;
+                dataOut[offset] = (byte) this.alpha;
+                break;
+            case CF_4BYTE_RGBA:
+                dataOut[offset++] = (byte) this.red;
+                dataOut[offset++] = (byte) this.green;
+                dataOut[offset++] = (byte) this.blue;
+                dataOut[offset] = (byte) this.alpha;
+                break;
+            default:
+                throw new UnsupportedOperationException("Use the get(ColorFormat) for int color formats!");
+        }
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public int getRed()
+    {
+        return this.red;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public int getGreen()
+    {
+        return this.green;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public int getBlue()
+    {
+        return this.blue;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public int getAlpha()
+    {
+        return this.alpha;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public RGB getFloatComponentsRGB()
+    {
+        return new RGB(this.red / 255.0f, this.green / 255.0f, this.blue / 255.0f);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public RGBA getFloatComponentsRGBA()
+    {
+        return new RGBA(this.red / 255.0f, this.green / 255.0f, this.blue / 255.0f, this.alpha / 255.0f);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public HSB getFloatComponentsHSB()
+    {
+        return this.getFloatComponentsRGB().toHSB();
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public HSBA getFloatComponentsHSBA()
+    {
+        return this.getFloatComponentsRGBA().toHSBA();
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public void storeFloatComponentsRGBA(@Nonnull RGBA target)
+    {
+        storeFloatComponentsRGB(target);
+        target.a = this.alpha / 255.0f;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public void storeFloatComponentsRGB(@Nonnull RGB target)
+    {
+        target.r = this.red / 255.0f;
+        target.g = this.green / 255.0f;
+        target.b = this.blue / 255.0f;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public void storeFloatComponentsHSBA(@Nonnull HSBA target)
+    {
+        var hsb = this.getFloatComponentsHSBA();
+
+        target.h = hsb.h;
+        target.s = hsb.s;
+        target.b = hsb.b;
+        target.a = hsb.a;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public void storeFloatComponentsHSB(@Nonnull HSB target)
+    {
+        var hsb = this.getFloatComponentsHSB();
+
+        target.h = hsb.h;
+        target.s = hsb.s;
+        target.b = hsb.b;
+    }
+}

plutolib/src/main/java/cz/tefek/pluto/util/color/EnumColorFormat.java

@@ -0,0 +1,81 @@
+package cz.tefek.pluto.util.color;
+
+/**
+ * TODO
+ *
+ * @since 20.2.0.0-alpha.3
+ * @author 493msi
+ */
+public enum EnumColorFormat
+{
+    /**
+     * 8-bit RGBA stored in a big-endian 32-bit integer
+     */
+    CF_INT_RGBA(4),
+    /**
+     * 8-bit BGRA stored in a big-endian 32-bit integer
+     */
+    CF_INT_BGRA(4),
+
+    /**
+     * 8-bit ARGB stored in a big-endian 32-bit integer
+     */
+    CF_INT_ARGB(4),
+    /**
+     * 8-bit ABGR stored in a big-endian 32-bit integer
+     */
+    CF_INT_ABGR(4),
+
+    /**
+     * 8-bit RGB stored in a big-endian 32-bit integer, the highest 8-bits are unused
+     */
+    CF_INT_RGB(4),
+    /**
+     * 8-bit RGB stored in a big-endian 32-bit integer, the highest 8-bits are unused
+     */
+    CF_INT_BGR(4),
+
+    /**
+     * 8-bit RGBA, one byte per color component
+     */
+    CF_4BYTE_RGBA(4),
+    /**
+     * 8-bit BGRA, one byte per color component
+     */
+    CF_4BYTE_BGRA(4),
+
+    /**
+     * 8-bit ARGB, one byte per color component
+     */
+    CF_4BYTE_ARGB(4),
+    /**
+     * 8-bit ABGR, one byte per color component
+     */
+    CF_4BYTE_ABGR(4),
+
+    /**
+     * 8-bit RGB, one byte per color component
+     */
+    CF_3BYTE_RGB(3),
+    /**
+     * 8-bit BGR, one byte per color component
+     */
+    CF_3BYTE_BGR(3);
+
+    private final int size;
+
+    EnumColorFormat(int size)
+    {
+        this.size = size;
+    }
+
+    /**
+     * Returns the size in bytes.
+     *
+     * @return The size of the color format, in bytes
+     */
+    public int getSize()
+    {
+        return this.size;
+    }
+}

plutolib/src/main/java/cz/tefek/pluto/util/color/HSB.java

@@ -0,0 +1,145 @@
+package cz.tefek.pluto.util.color;
+
+import org.apache.commons.lang3.Range;
+
+/**
+ * TODO
+ *
+ * @since 20.2.0.0-alpha.3
+ * @author 493msi
+ */
+public class HSB
+{
+    /**
+     * Hue [0°..360°]
+     * */
+    protected float h;
+
+    /**
+     * Saturation [0..1]
+     * */
+    protected float s;
+    private final static Range<Float> SATURATION_RANGE = Range.between(0.0f, 1.0f);
+
+    /**
+     * Value/Brightness [0..1]
+     * */
+    protected float b;
+    private final static Range<Float> BRIGHTNESS_RANGE = Range.between(0.0f, 1.0f);
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public HSB(float hue, float saturation, float brightness)
+    {
+        this.h = (360.0f + hue % 360.0f) % 360.0f;
+        this.s = SATURATION_RANGE.fit(saturation);
+        this.b = BRIGHTNESS_RANGE.fit(brightness);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public RGB toRGB()
+    {
+        return this.toRGBA(1.0f);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public RGB toRGBA()
+    {
+        return this.toRGBA(1.0f);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public RGBA toRGBA(float alpha)
+    {
+        float h6 = this.h / 60.0f;
+
+        int hueSide = (int) h6;
+
+        // The color component furthest on the hue wheel
+        float p = this.b * (1 - this.s);
+
+        float hueFractCCW = h6 - hueSide;
+        // The second nearest color component on the hue wheel - counter-clockwise
+        float q = this.b * (1 - hueFractCCW * this.s);
+
+        float hueFractCW = 1 - hueFractCCW;
+        // The second nearest color component on the hue wheel - clockwise
+        float t = this.b * (1 - hueFractCW * this.s);
+
+        switch (hueSide % 6)
+        {
+            case 1: // Hues 60°-119° -- Green is the brightest color, no blue is present at max saturation
+                return new RGBA(q, this.b, p, alpha);
+
+            case 2: // Hues 120°-179° -- Green is the brightest color, no red is present at max saturation
+                return new RGBA(p, this.b, t, alpha);
+
+            case 3: // Hues 180°-239° -- Blue is the brightest color, no red is present at max saturation
+                return new RGBA(p, q, this.b, alpha);
+
+            case 4: // Hues 240°-299° -- Blue is the brightest color, no green is present at max saturation
+                return new RGBA(t, p, this.b, alpha);
+
+            case 5: // Hues 300°-359° -- Red is the brightest color, no green is present at max saturation
+                return new RGBA(this.b, p, q, alpha);
+
+            case 0: // Hues 0°-59° -- Red is the brightest color, no blue is present at max saturation
+                return new RGBA(this.b, t, p, alpha);
+
+            default:
+                throw new IllegalStateException("This HSB object's hue is negative - this is not legal.");
+        }
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public float hue()
+    {
+        return this.h;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public float saturation()
+    {
+        return this.s;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public float brightness()
+    {
+        return this.b;
+    }
+}

plutolib/src/main/java/cz/tefek/pluto/util/color/HSBA.java

@@ -0,0 +1,51 @@
+package cz.tefek.pluto.util.color;
+
+import org.apache.commons.lang3.Range;
+
+/**
+ * TODO
+ *
+ * @since 20.2.0.0-alpha.3
+ * @author 493msi
+ */
+public class HSBA extends HSB
+{
+    protected float a;
+    private final static Range<Float> ALPHA_RANGE = Range.between(0.0f, 1.0f);
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public HSBA(float hue, float saturation, float lightness, float alpha)
+    {
+        super(hue, saturation, lightness);
+
+        this.a = ALPHA_RANGE.fit(alpha);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public float alpha()
+    {
+        return this.a;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    @Override
+    public RGB toRGBA()
+    {
+        return this.toRGBA(this.a);
+    }
+}

plutolib/src/main/java/cz/tefek/pluto/util/color/IRGB.java

@@ -0,0 +1,31 @@
+package cz.tefek.pluto.util.color;
+
+/**
+ * An interface for single precision RGB color objects.
+ *
+ * @since 20.2.0.0-alpha.3
+ * @author 493msi
+ */
+public interface IRGB
+{
+    /**
+     * Returns the red color component.
+     *
+     * @return The red component, in range 0..1
+     */
+    float red();
+
+    /**
+     * Returns the green color component.
+     *
+     * @return The green component, in range 0..1
+     */
+    float green();
+
+    /**
+     * Returns the blue color component.
+     *
+     * @return The blue color component, in range 0..1
+     */
+    float blue();
+}

plutolib/src/main/java/cz/tefek/pluto/util/color/IRGBA.java

@@ -0,0 +1,17 @@
+package cz.tefek.pluto.util.color;
+
+/**
+ * An interface for single precision RGBA color objects.
+ *
+ * @since 20.2.0.0-alpha.3
+ * @author 493msi
+ */
+public interface IRGBA extends IRGB
+{
+    /**
+     * Returns the alpha color component.
+     *
+     * @return The alpha component, in range 0..1
+     */
+    float alpha();
+}

plutolib/src/main/java/cz/tefek/pluto/util/color/RGB.java

@@ -0,0 +1,121 @@
+package cz.tefek.pluto.util.color;
+
+import org.apache.commons.lang3.math.NumberUtils;
+
+/**
+ * TODO
+ *
+ * @since 20.2.0.0-alpha.3
+ * @author 493msi
+ */
+public class RGB implements IRGB
+{
+    protected float r;
+    protected float g;
+    protected float b;
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public RGB(float r, float g, float b)
+    {
+        this.r = r;
+        this.g = g;
+        this.b = b;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public HSBA toHSB()
+    {
+        return this.toHSBA(1.0f);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public HSBA toHSBA()
+    {
+        return this.toHSBA(1.0f);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public HSBA toHSBA(float alpha)
+    {
+        float brightness = NumberUtils.max(this.r, this.g, this.b);
+        float min = NumberUtils.min(this.r, this.g, this.b);
+
+        if (brightness == 0)
+            return new HSBA(0, 0, 0, alpha);
+
+        float chroma = brightness - min;
+
+        if (chroma == 0)
+            return new HSBA(0, 0, brightness, alpha);
+
+        float saturation = chroma / brightness;
+        float hue;
+
+        if (brightness == this.r)
+            if (this.g < this.b)
+                hue = (this.g - this.b) / chroma + 6;
+            else
+                hue = (this.g - this.b) / chroma;
+        else if (brightness == this.g)
+            hue = (this.b - this.r) / chroma + 2;
+        else
+            hue = (this.r - this.g) / chroma + 4;
+
+        hue *= 60;
+
+        return new HSBA(hue, saturation, brightness, alpha);
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public float red()
+    {
+        return this.r;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public float green()
+    {
+        return this.g;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public float blue()
+    {
+        return this.b;
+    }
+}

plutolib/src/main/java/cz/tefek/pluto/util/color/RGBA.java

@@ -0,0 +1,47 @@
+package cz.tefek.pluto.util.color;
+
+/**
+ * TODO
+ *
+ * @since 20.2.0.0-alpha.3
+ * @author 493msi
+ */
+public class RGBA extends RGB implements IRGBA
+{
+    protected float a;
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public RGBA(float r, float g, float b, float a)
+    {
+        super(r, g, b);
+        this.a = a;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public float alpha()
+    {
+        return this.a;
+    }
+
+    /**
+     * TODO
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    @Override
+    public HSBA toHSBA()
+    {
+        return this.toHSBA(this.a);
+    }
+}

plutoshader/src/main/java/cz/tefek/pluto/engine/shader/uniform/UniformRGB.java

@@ -0,0 +1,58 @@
+package cz.tefek.pluto.engine.shader.uniform;
+
+import org.lwjgl.opengl.GL33;
+
+import cz.tefek.pluto.util.color.IRGB;
+import cz.tefek.pluto.util.color.IRGBA;
+
+/**
+ * A uniform allowing loading RGBA color data into shader uniforms.
+ *
+ * @since 20.2.0.0-alpha.3
+ * @author 493msi
+ */
+public class UniformRGB extends UniformBase
+{
+    /**
+     * Creates a new instance of the {@link UniformRGB} uniform
+     * with the specified shader location.
+     *
+     * @param location The location within the shader
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public UniformRGB(int location)
+    {
+        super(location);
+    }
+
+    /**
+     /**
+     * Loads the {@link IRGB} color components into the shader uniform.
+     *
+     * @param value The {@link IRGB} color object
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public void load(IRGB value)
+    {
+        GL33.glUniform3f(this.location, value.red(), value.green(), value.blue());
+    }
+
+    /**
+     * Loads the RGB color components into the shader uniform.
+     *
+     * @param r The red color component, in range [0..1]
+     * @param g The green color component, in range [0..1]
+     * @param b The blue color component, in range [0..1]
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public void load(float r, float g, float b)
+    {
+        GL33.glUniform3f(this.location, r, g, b);
+    }
+}

plutoshader/src/main/java/cz/tefek/pluto/engine/shader/uniform/UniformRGBA.java

@@ -0,0 +1,57 @@
+package cz.tefek.pluto.engine.shader.uniform;
+
+import org.lwjgl.opengl.GL33;
+
+import cz.tefek.pluto.util.color.IRGBA;
+
+/**
+ * A uniform allowing loading RGBA color data into shader uniforms.
+ *
+ * @since 20.2.0.0-alpha.3
+ * @author 493msi
+ */
+public class UniformRGBA extends UniformBase
+{
+    /**
+     * Creates a new instance of the {@link UniformRGBA} uniform
+     * with the specified shader location.
+     *
+     * @param location The location within the shader
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public UniformRGBA(int location)
+    {
+        super(location);
+    }
+
+    /**
+     * Loads the {@link IRGBA} color components into the shader uniform.
+     *
+     * @param value The {@link IRGBA} color object
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public void load(IRGBA value)
+    {
+        GL33.glUniform4f(this.location, value.red(), value.green(), value.blue(), value.alpha());
+    }
+
+    /**
+     * Loads the RGBA color components into the shader uniform.
+     *
+     * @param r The red color component, in range [0..1]
+     * @param g The green color component, in range [0..1]
+     * @param b The blue color component, in range [0..1]
+     * @param a The alpha component, in range [0..1]
+     *
+     * @since 20.2.0.0-alpha.3
+     * @author 493msi
+     */
+    public void load(float r, float g, float b, float a)
+    {
+        GL33.glUniform4f(this.location, r, g, b, a);
+    }
+}