added basic mappers

FEATURES.md

@@ -0,0 +1,19 @@
+shapes:
+  triangles:
+    point
+    line
+      solid
+      gradient
+    rectangle
+      solid
+      gradient
+      blitter (tilemaps)
+    triangle
+      solid
+      gradient
+      perspective mapping (3D!!!)
+    quad
+      solid
+      gradient (charts)
+      blitter (isometric)
+      affine mapping (sprite rotation and scaling)

datatypes.cpp

@@ -26,15 +26,15 @@ namespace UwU {
   };
 
   // Coord2 datatype for xy coordinates, from top-left of surface
-  // struct Coord2 {
-  //   Coord2(uint16_t x, uint16_t y) {
-  //     this->x = x;
-  //     this->y = y;
-  //   }
-  //   Coord2() {}
-  //   uint16_t x;
-  //   uint16_t y;
-  // };
+  struct Coord2 {
+    Coord2(uint16_t x, uint16_t y) {
+      this->x = x;
+      this->y = y;
+    }
+    Coord2() {}
+    uint16_t x;
+    uint16_t y;
+  };
 
   // Vec2 datatype for signed x, y coordinates
   // struct Vec2 {

example.cpp

@@ -44,21 +44,22 @@ int main(void) {
   UwU::Color blue = UwU::Color(0x0000ffff);
 
   // UwU::ColorShader fuchsia = UwU::ColorShader(UwU::Color(0xb00b69ff));
-  UwU::VGradientShader bisexual = UwU::VGradientShader(69, 420, UwU::Color(0xff0000ff), UwU::Color(0x0000ffff));
+  UwU::VGradientShader bisexual = UwU::VGradientShader(0, 351, UwU::Color(0xff0000ff), UwU::Color(0x0000ffff));
+  UwU::OffsetMapper rectMapper = UwU::OffsetMapper(69, 69);
   UwU::Rectangle rectangle = UwU::Rectangle(69, 69, 420, 420);
-  rectangle.draw(surface.buffer, bisexual);
+  rectangle.draw(surface.buffer, rectMapper, bisexual);
 
   UwU::ColorShader greenShader = UwU::ColorShader(green);
   UwU::Point point = UwU::Point(187, 37);
   point.draw(surface.buffer, greenShader);
 
-  UwU::ColorShader blue = UwU::ColorShader(UwU::Color(0x0000ffff));
+  UwU::ColorShader blueShader = UwU::ColorShader(blue);
   UwU::Trapezoid trapezoid = UwU::Trapezoid(100, 300, 690, 320, 720, 780);
-  trapezoid.draw(surface.buffer, blue);
+  trapezoid.draw(surface.buffer, blueShader);
 
-  UwU::ColorShader red = UwU::ColorShader(UwU::Color(0xff0000ff));
+  UwU::ColorShader redShader = UwU::ColorShader(red);
   UwU::Triangle triangle = UwU::Triangle(140, 140, 60, 400, 240, 240);
-  triangle.draw(surface.buffer, red);
+  triangle.draw(surface.buffer, redShader);
   
   // // Benchmarking
   // struct timespec start, end;
@@ -99,7 +100,7 @@ int main(void) {
   };
 
   for (uint16_t i = 0; i < 8; i++) {
-    lines[i].draw(surface.buffer, blue);
+    lines[i].draw(surface.buffer, blueShader);
   }
 
 

mappers/mapperbase.cpp

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <stdint.h>
+
+#include "../datatypes.cpp"
+#include "../helpers.cpp"
+
+namespace UwU {
+  template <class MapperT>
+  class MapperBase {
+    public:
+      Coord2 map(uint16_t x, uint16_t y) {
+        return static_cast<MapperT*>(this)->map(x, y);
+     }
+  };
+}

mappers/mappers.h

@@ -0,0 +1,4 @@
+#include "mapperbase.cpp"
+#include "nullmapper.cpp"
+#include "offsetmapper.cpp"
+#include "tilemapper.cpp"

mappers/nullmapper.cpp

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <stdint.h>
+
+#include "../datatypes.cpp"
+#include "../helpers.cpp"
+#include "mapperbase.cpp"
+
+namespace UwU {
+  class NullMapper : public MapperBase<NullMapper> {
+    public:
+      NullMapper() {}
+
+      Coord2 map(uint16_t x, uint16_t y) {
+        return Coord2(x, y);
+     }
+  };
+}

mappers/offsetmapper.cpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <stdint.h>
+
+#include "../datatypes.cpp"
+#include "../helpers.cpp"
+#include "mapperbase.cpp"
+
+namespace UwU {
+  class OffsetMapper : public MapperBase<OffsetMapper> {
+    public:
+      OffsetMapper(uint16_t x0, uint16_t y0) {
+        this->x0 = x0;
+        this->y0 = y0;
+      }
+      uint16_t x0, y0;
+
+      Coord2 map(uint16_t x, uint16_t y) {
+        uint16_t u = x -x0;
+        uint16_t v = y -y0;
+        return Coord2(u, v);
+     }
+  };
+}

mappers/tilemapper.cpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <stdint.h>
+
+#include "../datatypes.cpp"
+#include "../helpers.cpp"
+#include "mapperbase.cpp"
+
+namespace UwU {
+  class TileMapper : public MapperBase<TileMapper> { // not actually tilemapping yet
+    public:
+      TileMapper(uint16_t x0, uint16_t y0) {
+        this->x0 = x0;
+        this->y0 = y0;
+      }
+      uint16_t x0, y0;
+
+      Coord2 map(uint16_t x, uint16_t y) {
+        uint16_t u = x -x0;
+        uint16_t v = y -y0;
+        return Coord2(u, v);
+     }
+  };
+}

primatives/rectangle.cpp

@@ -5,8 +5,8 @@
 #include "../datatypes.cpp"
 #include "../helpers.cpp"
 #include "../buffer.cpp"
-#include "../shaders/shaderbase.cpp"
 #include "../shaders/shaders.h"
+#include "../mappers/mappers.h"
 
 namespace UwU {
   // rectangle
@@ -25,12 +25,13 @@ namespace UwU {
       uint16_t y1;
       
       // Draw a rectangle
-      template <class ShaderT>
-      void draw (Buffer buffer, ShaderBase<ShaderT>& shader) {
+      template <class ShaderT, class MapperT>
+      void draw (Buffer buffer, MapperBase<MapperT>& mapper, ShaderBase<ShaderT>& shader) {
         if (x0 > buffer.width || y0 > buffer.height || x1 > buffer.width || y1 > buffer.height) {return;};
         for (uint16_t y = y0; y <= y1; y++) {
           for (uint16_t x = x0; x <= x1; x++) {
-            buffer.drawPixel(x, y, shader.shade(x, y));
+            Coord2 uv = mapper.map(x, y);
+            buffer.drawPixel(x, y, shader.shade(uv.x, uv.y));
           }
         }
         return;