From 3064355e159669f4b7a79ee9b5b508dd24980920 Mon Sep 17 00:00:00 2001
From: MrScautHD <65916181+MrScautHD@users.noreply.github.com>
Date: Sun, 21 Jul 2024 11:15:25 +0200
Subject: [PATCH] Add Color, Add Vertex

---
 src/Bliss/CSharp/Colors/Color.cs              | 169 ++++++++++++++++++
 src/Bliss/CSharp/Geometry/Vertex.cs           |  71 ++++++++
 .../CSharp/Rendering/Vulkan/BlissPipeline.cs  |   6 +-
 3 files changed, 243 insertions(+), 3 deletions(-)
 create mode 100644 src/Bliss/CSharp/Colors/Color.cs
 create mode 100644 src/Bliss/CSharp/Geometry/Vertex.cs

diff --git a/src/Bliss/CSharp/Colors/Color.cs b/src/Bliss/CSharp/Colors/Color.cs
new file mode 100644
index 0000000..2e08ba0
--- /dev/null
+++ b/src/Bliss/CSharp/Colors/Color.cs
@@ -0,0 +1,169 @@
+using System.Numerics;
+
+namespace Bliss.CSharp.Colors;
+
+public struct Color {
+    
+    public static readonly Color White = new Color(255, 255, 255, 255);
+    public static readonly Color Black = new Color(0, 0, 0, 255);
+    
+    public static readonly Color LightRed = new Color(255, 102, 102, 255);
+    public static readonly Color Red = new Color(255, 0, 0, 255);
+    public static readonly Color DarkRed = new Color(139, 0, 0, 255);
+
+    public static readonly Color LightGreen = new Color(144, 238, 144, 255);
+    public static readonly Color Green = new Color(0, 255, 0, 255);
+    public static readonly Color DarkGreen = new Color(0, 100, 0, 255);
+
+    public static readonly Color LightBlue = new Color(173, 216, 230, 255);
+    public static readonly Color Blue = new Color(0, 0, 255, 255);
+    public static readonly Color DarkBlue = new Color(0, 0, 139, 255);
+
+    public static readonly Color LightYellow = new Color(255, 255, 153, 255);
+    public static readonly Color Yellow = new Color(255, 255, 0, 255);
+    public static readonly Color DarkYellow = new Color(204, 204, 0, 255);
+
+    public static readonly Color LightCyan = new Color(224, 255, 255, 255);
+    public static readonly Color Cyan = new Color(0, 255, 255, 255);
+    public static readonly Color DarkCyan = new Color(0, 139, 139, 255);
+
+    public static readonly Color LightMagenta = new Color(255, 153, 255, 255);
+    public static readonly Color Magenta = new Color(255, 0, 255, 255);
+    public static readonly Color DarkMagenta = new Color(139, 0, 139, 255);
+
+    public static readonly Color LightOrange = new Color(255, 200, 0, 255);
+    public static readonly Color Orange = new Color(255, 165, 0, 255);
+    public static readonly Color DarkOrange = new Color(255, 140, 0, 255);
+
+    public static readonly Color LightBrown = new Color(205, 133, 63, 255);
+    public static readonly Color Brown = new Color(165, 42, 42, 255);
+    public static readonly Color DarkBrown = new Color(101, 67, 33, 255);
+
+    public static readonly Color LightPurple = new Color(147, 112, 219, 255);
+    public static readonly Color Purple = new Color(128, 0, 128, 255);
+    public static readonly Color DarkPurple = new Color(75, 0, 130, 255);
+
+    public static readonly Color LightPink = new Color(255, 182, 193, 255);
+    public static readonly Color Pink = new Color(255, 192, 203, 255);
+    public static readonly Color DarkPink = new Color(231, 84, 128, 255);
+
+    public static readonly Color LightGray = new Color(211, 211, 211, 255);
+    public static readonly Color Gray = new Color(128, 128, 128, 255);
+    public static readonly Color DarkGray = new Color(169, 169, 169, 255);
+    
+    public float R;
+    public float G;
+    public float B;
+    public float A;
+    
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Color"/> class.
+    /// </summary>
+    /// <param name="r">The red component.</param>
+    /// <param name="g">The green component.</param>
+    /// <param name="b">The blue component.</param>
+    /// <param name="a">The alpha component.</param>
+    public Color(byte r, byte g, byte b, byte a) {
+        this.R = r;
+        this.G = g;
+        this.B = b;
+        this.A = a;
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Color"/> class using HSV values.
+    /// </summary>
+    /// <param name="hue">The hue component, in degrees (0-360).</param>
+    /// <param name="saturation">The saturation component, as a percentage (0-100).</param>
+    /// <param name="value">The value (brightness) component, as a percentage (0-100).</param>
+    public Color(float hue, float saturation, float value) {
+        hue /= 360;
+        saturation /= 100;
+        value /= 100;
+    
+        float chroma = value * saturation;
+        float hue2 = hue * 6f;
+        float x = chroma * (1 - Math.Abs( (hue2 % 2) - 1));
+        float r = 0, g = 0, b = 0;
+    
+        if( 0 <= hue2 && hue2 < 1) {
+            r = chroma;
+            g = x;
+            b = 0;
+        }
+        else if( 1 <= hue2 && hue2 < 2) {
+            r = x;
+            g = chroma;
+            b = 0;
+        }
+        else if( 2 <= hue2 && hue2 < 3) {
+            r = 0;
+            g = chroma;
+            b = x;
+        }    
+        else if( 3 <= hue2 && hue2 < 4) {
+            r = 0;
+            g = x;
+            b = chroma;
+        }    
+        else if( 4 <= hue2 && hue2 < 5) {
+            r = x;
+            g = 0;
+            b = chroma;
+        }       
+        else if( 5 <= hue2 && hue2 < 6) {
+            r = chroma;
+            g = 0;
+            b = x;
+        }   
+    
+        float m = value - chroma;
+        this.R = (r + m) * 255;
+        this.G = (g + m) * 255;
+        this.B = (b + m) * 255;
+        this.A = 255;
+    }
+
+    /// <summary>
+    /// Converts the color from RGB to HSV (Hue, Saturation, Value) format.
+    /// </summary>
+    /// <returns>A <see cref="Vector3"/> representing the HSV values, where:
+    /// - X is Hue (0-360 degrees),
+    /// - Y is Saturation (0-100 percent),
+    /// - Z is Value (0-100 percent).</returns>
+    public Vector3 GetHsv() {
+        float r = this.R / 255.0f;
+        float g = this.G / 255.0f;
+        float b = this.B / 255.0f;
+
+        float max = Math.Max(Math.Max(r, g), b);
+        float min = Math.Min(Math.Min(r, g), b);
+        
+        float h = max;
+        float s = max;
+        float v = max;
+        
+        float diff = max - min;
+
+        s = max == 0.0 ? 0 : diff / max;
+
+        if (max == min) {
+            h = 0;
+        }
+        else {
+            if (max == r) {
+                h = (g - b) / diff + (g < b ? 6 : 0);
+            }
+            else if (max == g) {
+                h = (b - r) / diff + 2;
+            }
+            else if (max == b) {
+                h = (r - g) / diff + 4;
+            }
+            
+            h /= 6.0f;
+        }
+        
+        return new Vector3(h * 360, s * 100, v * 100);
+    }
+}
\ No newline at end of file
diff --git a/src/Bliss/CSharp/Geometry/Vertex.cs b/src/Bliss/CSharp/Geometry/Vertex.cs
new file mode 100644
index 0000000..9fbdaa8
--- /dev/null
+++ b/src/Bliss/CSharp/Geometry/Vertex.cs
@@ -0,0 +1,71 @@
+using System.Numerics;
+using System.Runtime.InteropServices;
+using Bliss.CSharp.Colors;
+using Silk.NET.Vulkan;
+
+namespace Bliss.CSharp.Geometry;
+
+public class Vertex {
+    
+    public Vector3 Position;
+    public Color Color;
+    public Vector3 Normal;
+    public Vector2 Uv;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Vertex"/> class.
+    /// </summary>
+    /// <param name="pos">The position of the vertex.</param>
+    /// <param name="color">The color of the vertex.</param>
+    public Vertex(Vector3 pos, Color color) {
+        this.Position = pos;
+        this.Color = color;
+    }
+
+    /// <summary>
+    /// Get the binding descriptions for the Vertex class.
+    /// </summary>
+    /// <returns>An array of VertexInputBindingDescription objects.</returns>
+    public static VertexInputBindingDescription[] GetBindingDescriptions() {
+        return new[] {
+            new VertexInputBindingDescription() {
+                Binding = 0,
+                Stride = (uint) Marshal.SizeOf<Vertex>(),
+                InputRate = VertexInputRate.Vertex
+            }
+        };
+    }
+
+    /// <summary>
+    /// Get the attribute descriptions for the Vertex class.
+    /// </summary>
+    /// <returns>An array of VertexInputAttributeDescription objects.</returns>
+    public static VertexInputAttributeDescription[] GetAttributeDescriptions() {
+        return new[] {
+            new VertexInputAttributeDescription() {
+                Binding = 0,
+                Location = 0,
+                Format = Format.R32G32B32Sfloat,
+                Offset = (uint) Marshal.OffsetOf<Vertex>(nameof(Position))
+            },
+            new VertexInputAttributeDescription() {
+                Binding = 0,
+                Location = 1,
+                Format = Format.R32G32B32Sfloat,
+                Offset = (uint) Marshal.OffsetOf<Vertex>(nameof(Color.GetHsv))
+            },
+            new VertexInputAttributeDescription() {
+                Binding = 0,
+                Location = 2,
+                Format = Format.R32G32B32Sfloat,
+                Offset = (uint) Marshal.OffsetOf<Vertex>(nameof(Normal))
+            },
+            new VertexInputAttributeDescription() {
+                Binding = 0,
+                Location = 3,
+                Format = Format.R32G32Sfloat,
+                Offset = (uint) Marshal.OffsetOf<Vertex>(nameof(Uv))
+            }
+        };
+    }
+}
\ No newline at end of file
diff --git a/src/Bliss/CSharp/Rendering/Vulkan/BlissPipeline.cs b/src/Bliss/CSharp/Rendering/Vulkan/BlissPipeline.cs
index f89c3fa..4c424ce 100644
--- a/src/Bliss/CSharp/Rendering/Vulkan/BlissPipeline.cs
+++ b/src/Bliss/CSharp/Rendering/Vulkan/BlissPipeline.cs
@@ -1,7 +1,7 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
+using Bliss.CSharp.Geometry;
 using Silk.NET.Core.Native;
-using Silk.NET.SDL;
 using Silk.NET.Vulkan;
 using BlendFactor = Silk.NET.Vulkan.BlendFactor;
 
@@ -149,7 +149,7 @@ private unsafe void CreateGraphicsPipeline(string vertPath, string fragPath, Pip
             PName = (byte*) SilkMarshal.StringToPtr("main"),
             Flags = PipelineShaderStageCreateFlags.None,
             PNext = null,
-            PSpecializationInfo = null,
+            PSpecializationInfo = null
         };
 
         PipelineShaderStageCreateInfo fragShaderStageInfo = new() {
@@ -159,7 +159,7 @@ private unsafe void CreateGraphicsPipeline(string vertPath, string fragPath, Pip
             PName = (byte*) SilkMarshal.StringToPtr("main"),
             Flags = PipelineShaderStageCreateFlags.None,
             PNext = null,
-            PSpecializationInfo = null,
+            PSpecializationInfo = null
         };
 
         PipelineShaderStageCreateInfo* shaderStages = stackalloc[] {