added origin to mapper parameters

example.cpp

@@ -38,16 +38,16 @@ int main(void) {
   
   UwU::Surface surface = UwU::Surface(w, h, onKey);
 
-  UwU::Color fuchsia = UwU::Color(0xb00b69ff);
+  // UwU::Color fuchsia = UwU::Color(0xb00b69ff);
   UwU::Color red = UwU::Color(0xff0000ff);
   UwU::Color green = UwU::Color(0x00ff00ff);
   UwU::Color blue = UwU::Color(0x0000ffff);
 
   // UwU::ColorShader fuchsia = UwU::ColorShader(UwU::Color(0xb00b69ff));
   UwU::VGradientShader bisexual = UwU::VGradientShader(0, 351, red, blue);
-  UwU::OffsetMapper rectMapper = UwU::OffsetMapper(69, 69);
+  UwU::OffsetMapper offsetMapper = UwU::OffsetMapper();
   UwU::Rectangle rectangle = UwU::Rectangle(69, 69, 420, 420);
-  rectangle.draw(surface.buffer, rectMapper, bisexual);
+  rectangle.draw(surface.buffer, offsetMapper, bisexual);
 
   UwU::ColorShader greenShader = UwU::ColorShader(green);
   UwU::NullMapper nullMapper = UwU::NullMapper();

mappers/mapperbase.cpp

@@ -9,8 +9,8 @@ namespace UwU {
   template <class MapperT>
   class MapperBase {
     public:
-      Coord2 map(uint16_t x, uint16_t y) {
-        return static_cast<MapperT*>(this)->map(x, y);
+      Coord2 map(uint16_t x0, uint16_t y0, uint16_t x, uint16_t y) {
+        return static_cast<MapperT*>(this)->map(x0, y0, x, y);
      }
   };
 }

mappers/nullmapper.cpp

@@ -11,7 +11,9 @@ namespace UwU {
     public:
       NullMapper() {}
 
-      Coord2 map(uint16_t x, uint16_t y) {
+      Coord2 map(uint16_t x0, uint16_t y0, uint16_t x, uint16_t y) {
+        (void)x0;
+        (void)y0;
         return Coord2(x, y);
      }
   };

mappers/offsetmapper.cpp

@@ -9,13 +9,9 @@
 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;
+      OffsetMapper() {}
 
-      Coord2 map(uint16_t x, uint16_t y) {
+      Coord2 map(uint16_t x0, uint16_t y0, uint16_t x, uint16_t y) {
         uint16_t u = x -x0;
         uint16_t v = y -y0;
         return Coord2(u, v);

mappers/tilemapper.cpp

@@ -9,13 +9,9 @@
 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;
+      TileMapper() {}
 
-      Coord2 map(uint16_t x, uint16_t y) {
+      Coord2 map(uint16_t x0, uint16_t y0, uint16_t x, uint16_t y) {
         uint16_t u = x -x0;
         uint16_t v = y -y0;
         return Coord2(u, v);

primatives/line.cpp

@@ -28,7 +28,7 @@ namespace UwU {
         Coord2 uv;
 
         for (int16_t x = ix0; x < ix1; x++) {
-          uv = mapper.map(x, y);
+          uv = mapper.map(ix0, iy0, x, y);
           buffer.drawPixel((uint16_t)x, (uint16_t)y, shader.shade(uv.x, uv.y));
           if (d > 0) {
             y += yi;
@@ -56,7 +56,7 @@ namespace UwU {
         Coord2 uv;
 
         for (int16_t y = iy0; y < iy1; y++) {
-          uv = mapper.map(x, y);
+          uv = mapper.map(ix0, iy0, x, y);
           buffer.drawPixel((uint16_t)x, (uint16_t)y, shader.shade(uv.x, uv.y));
           if (d > 0) {
             x += xi;

primatives/point.cpp

@@ -24,7 +24,7 @@ namespace UwU {
       template <class MapperT, class ShaderT>
       void draw (Buffer buffer, MapperBase<MapperT>& mapper, ShaderBase<ShaderT>& shader) {
         if (x > buffer.width || y > buffer.height) {return;};
-        Coord2 uv = mapper.map(x, y);
+        Coord2 uv = mapper.map(x, y, x, y);
         buffer.drawPixel(x, y, shader.shade(uv.x, uv.y));
         return;
       }

primatives/rectangle.cpp

@@ -30,7 +30,7 @@ namespace UwU {
         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++) {
-            Coord2 uv = mapper.map(x, y);
+            Coord2 uv = mapper.map(x0, y0, x, y);
             buffer.drawPixel(x, y, shader.shade(uv.x, uv.y));
           }
         }

primatives/trapezoid.cpp

@@ -40,9 +40,11 @@ namespace UwU {
         Helpers::bresenham(0, xl0, y1 - y0, xl1, LeftBound);
         Helpers::bresenham(0, xr0, y1 - y0, xr1, RightBound);
 
+        uint16_t x0 = std::min(xl0, xl1);
+        
         for (uint16_t i = 0; i < height; i++) {
           for (uint16_t x = LeftBound[i]; x <= RightBound[i]; x++) {
-            Coord2 uv = mapper.map(x, i + y0);
+            Coord2 uv = mapper.map(x0, y0, x, i + y0);
             buffer.drawPixel(x, i + y0, shader.shade(uv.x, uv.y));
           }
         }

primatives/triangle.cpp

@@ -91,13 +91,15 @@ namespace UwU {
         // Calculate LUT for short two lines
         Helpers::bresenham(0, topX, midY - topY, midX, splitBound);
         Helpers::bresenham(midY - topY, midX, height - 1, btmX, splitBound);
+
         Coord2 uv;
+        uint16_t leftX = std::min(topX, std::min(midX, btmX));
 
         // Left-handed triangle case (midpoint is left of triangle)
         if ((int16_t)midX < longBound[midY - topY]) {
           for (uint16_t i = 0; i < height; i++) {
             for (uint16_t x = (uint16_t)splitBound[i]; x <= (uint16_t)longBound[i]; x++) {
-              uv = mapper.map(x, i + (uint16_t)topY);
+              uv = mapper.map(leftX, topY, x, i + (uint16_t)topY);
               buffer.drawPixel(x, i + (uint16_t)topY, shader.shade(uv.x, uv.y));
             }
           }
@@ -105,7 +107,7 @@ namespace UwU {
         } else {
           for (uint16_t i = 0; i < height; i++) {
             for (uint16_t x = (uint16_t)longBound[i]; x <= (uint16_t)splitBound[i]; x++) {
-              uv = mapper.map(x, i + (uint16_t)topY);
+              uv = mapper.map(leftX, topY, x, i + (uint16_t)topY);
               buffer.drawPixel(x, i + (uint16_t)topY, shader.shade(uv.x, uv.y));
             }
           }