feat: switched to qt and refactored

.clangd

@@ -1,5 +1,3 @@
-If:
-  PathMatch: .*\.hpp
 
 CompileFlags:
   Add: [-std=c++20]

fastmath.hpp

@@ -3,7 +3,6 @@
 
 #include <cmath>
 #include <iostream>
-#include <sstream>
 #include <stdint.h>
 #include <stdlib.h>
 #include <vector>
@@ -20,7 +19,7 @@
 
 struct decimal {
 
-    const int32_t i;
+    int32_t i;
 
     decimal() : i(0) {}
     decimal(float i) : i(TO_INT(i)) {}
@@ -60,6 +59,9 @@ struct decimal {
     friend bool operator==(const decimal &d1, const decimal &d2) {
         return d1.i == d2.i;
     }
+    friend bool operator!=(const decimal &d1, const decimal &d2) {
+        return d1.i != d2.i;
+    }
 
     decimal &operator=(decimal const &in) {
         if (this != &in) {
@@ -153,6 +155,7 @@ template <int n, class Dev> struct vec {
         }
         return res;
     }
+    decimal &operator[](const int &i) { return v[i]; }
 
     decimal len_sq() { return *this * *this; }
 
@@ -166,7 +169,21 @@ template <int n, class Dev> struct vec {
   protected:
     decimal v[n];
 };
+struct vec2 : public vec<2, vec2> {
 
+    vec2() : vec<2, vec2>() {}
+
+    vec2(float x, float y) : vec<2, vec2>({decimal(x), decimal(y)}) {}
+
+    vec2(double x, double y) : vec<2, vec2>({decimal(x), decimal(y)}) {}
+
+    vec2(int32_t x, int32_t y) : vec<2, vec2>({decimal(x), decimal(y)}) {}
+
+    vec2(decimal x, decimal y) : vec<2, vec2>({x, y}) {}
+
+    decimal &x() { return v[0]; }
+    decimal &y() { return v[1]; }
+};
 struct vec3 : public vec<3, vec3> {
 
     vec3() : vec<3, vec3>() {}
@@ -182,14 +199,34 @@ struct vec3 : public vec<3, vec3> {
 
     vec3(decimal x, decimal y, decimal z) : vec<3, vec3>({x, y, z}) {}
 
-    decimal x() const { return v[0]; }
-    decimal y() const { return v[1]; }
-    decimal z() const { return v[2]; }
+    decimal &x() { return v[0]; }
+    decimal &y() { return v[1]; }
+    decimal &z() { return v[2]; }
 
-    vec3 cross(const vec3 &v) {
+    vec3 cross(vec3 &v) {
         return vec3((y() * v.z()) - (z() * v.y()),
                     (z() * v.x()) - (x() * v.z()),
                     (x() * v.y()) - (y() * v.x()));
     }
 };
+struct vec4 : public vec<4, vec4> {
+
+    vec4() : vec<4, vec4>() {}
+
+    vec4(float x, float y, float z, float w)
+        : vec<4, vec4>({decimal(x), decimal(y), decimal(z), decimal(w)}) {}
+
+    vec4(double x, double y, double z, double w)
+        : vec<4, vec4>({decimal(x), decimal(y), decimal(z), decimal(w)}) {}
+
+    vec4(int32_t x, int32_t y, int32_t z, int32_t w)
+        : vec<4, vec4>({decimal(x), decimal(y), decimal(z), decimal(w)}) {}
+
+    vec4(decimal x, decimal y, decimal z) : vec<4, vec4>({x, y, z}) {}
+
+    decimal &x() { return v[0]; }
+    decimal &y() { return v[1]; }
+    decimal &z() { return v[2]; }
+    decimal &w() { return v[3]; }
+};
 #endif

main.cpp

@@ -1,12 +1,18 @@
 #include "fastmath.hpp"
 #include "polygon.hpp"
+#include "renderer.hpp"
+#include "rendertarget.hpp"
+#include <QApplication>
+#include <QImage>
+#include <QLabel>
+#include <QPixmap>
+#include <functional>
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
 #include <unistd.h>
-
 #define HIGHT 64
 #define WIDTH 64
 
@@ -56,24 +62,54 @@ void drawImage(unsigned short *img) {
                 img[(y.i >> SHIFT_AMOUNT) * RWIDTH + (x.i >> SHIFT_AMOUNT)] =
                     (unsigned short)23; // (((-normal[1]+(1 <<
                                         // SHIFT_AMOUNT))*14)>>SHIFT_AMOUNT);
-            } else {
-                img[(y.i >> SHIFT_AMOUNT) * RWIDTH + (x.i >> SHIFT_AMOUNT)] =
-                    (unsigned short)0;
             }
         }
     }
     printf("done writing %d \n", *(img + sizeof(unsigned short) * 32 * 32));
 }
 
-int main() {
-    unsigned short *img =
-        (unsigned short *)malloc(128 * 128 * sizeof(unsigned short));
-    while (true) {
-        drawImage(img);
-        printf("%s", drawToString(img));
-        return 0;
-        // sleep(0.001);
+int main(int argc, char *argv[]) {
+    Rendertarget target(128, 128);
+    Renderer renderer;
+    renderer.target = &target;
+
+    polygon poly =
+        polygon(vec3(0.9, 0.9, 0.0), vec3(0.5, 0.1, 0.0), vec3(0.1, 0.9, 0.0));
+
+    renderer.render(&poly);
+    QApplication a(argc, argv);
+
+    uint8_t *pixel = new uint8_t[64 * 64 * 3];
+    /*for (int i = 0; i < 64 * 64 * 3; i++) {
+        pixel[i] = target.pixels[i].i >> SHIFT_AMOUNT;
+    }*/
+    std::function<void(int, uint32_t *)> addTo = [&target](int start,
+                                                           uint32_t *arr) {
+        for (int c = 0; c < 3; c++) {
+            arr[c] += target.pixels[start + c].i >> SHIFT_AMOUNT;
         }
-    // printf("%s", test);
-    return 0;
+    };
+
+    for (int x = 0; x < 64; x++) {
+        for (int y = 0; y < 64; y++) {
+            uint32_t result[3] = {};
+            addTo((target.width * y * 2 + x * 2) * 3, result);
+            addTo((target.width * (y * 2 + 1) + x * 2) * 3, result);
+            addTo((target.width * y * 2 + (x * 2 + 1)) * 3, result);
+            addTo((target.width * (y * 2 + 1) + (x * 2 + 1)) * 3, result);
+            for (int c = 0; c < 3; c++) {
+                pixel[(WIDTH * y + x) * 3 + c] = result[c] >> 2; /*
+                     target.pixels[(target.width * y * 2 + x * 2) * 3 + c].i >>
+                     SHIFT_AMOUNT;*/
+            }
+        }
+    }
+    QWidget widget;
+    widget.setAutoFillBackground(true);
+    widget.setGeometry(0, 0, 500, 500);
+    QLabel display(&widget);
+    QImage img((unsigned char *)pixel, 64, 64, QImage::Format_RGB888);
+    display.setPixmap(QPixmap::fromImage(img).scaled(widget.size()));
+    widget.show();
+    return a.exec();
 }

renderer.hpp

@@ -0,0 +1,42 @@
+
+#ifndef RENDERER_H
+#define RENDERER_H
+
+#include "fastmath.hpp"
+#include "polygon.hpp"
+#include "rendertarget.hpp"
+#include <memory.h>
+
+class Renderer {
+
+  public:
+    Rendertarget *target;
+
+    bool clearTarget = true;
+    Renderer() : clearTarget(false) {}
+
+    void render(polygon *p) {
+        decimal widthScale = decimal(1.0) / decimal((float)target->width);
+        decimal heightScale = decimal(1.0) / decimal((float)target->height);
+        // std::cout << widthScale << std::endl;
+        vec3 pos = vec3();
+
+        if (clearTarget) {
+            memset((wchar_t *)target->pixels, 0,
+                   target->height * target->width * sizeof(target[0]));
+        }
+
+        for (int x = 0; x < target->height; x++) {
+            for (int y = 0; y < target->height; y++) {
+                if (p->contains(pos)) {
+                    target->set(x, y, vec3(0.0, 255.0, 0.0));
+                }
+                pos.y() += heightScale;
+            }
+            pos.y() = decimal(0);
+            pos.x() += widthScale;
+        }
+    }
+};
+
+#endif

rendertarget.hpp

@@ -0,0 +1,32 @@
+
+#ifndef RENDERTARGET_H
+#define RENDERTARGET_H
+
+#include "fastmath.hpp"
+class Rendertarget {
+
+  public:
+    const int width;
+    const int height;
+
+    Rendertarget(int width, int height) : width(width), height(height) {
+        pixels = new decimal[width * height * 3];
+    }
+
+    void set(int x, int y, vec3 val) {
+        int start = (width * y + x) * 3;
+        for (int i = 0; i < 3; i++) {
+            pixels[start + i] = val[i];
+        }
+    }
+    void get(int x, int y, vec3 *val) {
+        int start = (width * y + x) * 3;
+        for (int i = 0; i < 3; i++) {
+            (*val)[i] = pixels[start + i];
+        }
+    }
+
+    decimal *pixels;
+};
+
+#endif