Add constants

include/constants.hpp

@@ -0,0 +1,10 @@
+#pragma once
+#include <cstdint>
+
+namespace graphics {
+// constexpr int WIDTH = 640;
+constexpr int HEIGHT = 480;
+constexpr int FRAME_RATE = 60;
+constexpr int FRAME_TIME = 1000 / FRAME_RATE;
+constexpr int FOV = 1;
+}  // namespace graphics

include/display.hpp

@@ -18,11 +18,14 @@ class Display {
   SDL_Surface *surface;
   SDL_Event *event;
   SDL_Renderer *renderer;
-  Vector3D camera;
-  Vector3D rotation;
   std::unique_ptr<FrameBuffer> frameBuffer;
   std::vector<Vector3D> vertices;
 
+  Vector3D camera;
+  Vector3D rotation;
+
+  int prevTime;
+
   public:
   // Constructor to initialize memory
   Display();

src/display.cpp

@@ -2,12 +2,15 @@
 
 #include <SDL2/SDL.h>
 
+#include "../include/constants.hpp"
 #include "../include/vector3d.hpp"
 
 namespace graphics {
 Display::Display() {
   // Initialize the camera
   camera = Vector3D(0, 0, -5);
+  rotation = Vector3D(0, 0, 0);
+  prevTime = SDL_GetTicks();
 
   // Initialize SDL
   if (SDL_Init(SDL_INIT_EVERYTHING) < 0) {
@@ -114,6 +117,8 @@ void Display::render() {
     frameBuffer->drawFilledRectangle(
         projectedPoint.x + (frameBuffer->getWidth() / 2),
         projectedPoint.y + (frameBuffer->getHeight() / 2), 4, 4,
+        projectedPoint.x * (frameBuffer->getWidth() / 2),
+        projectedPoint.y * (frameBuffer->getHeight() / 2), 4, 4,
         Color(0xFFFFFF00));
   }
 

src/vector3d.cpp

@@ -1,9 +1,11 @@
 #include "../include/vector3d.hpp"
 
 #include <cmath>
+
+#include "../include/constants.hpp"
 namespace graphics {
 Vector2D Vector3D::project() const {
-  return Vector2D(x * 128 / z, y * 128 / z);
+  return Vector2D(x * FOV / z, y * FOV / z);
 }
 
 void Vector3D::rotateX(double theta) {