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#include "graphics.h"
#include <cmath>
#include <vector>
#include <cstdlib>
struct Vec3 {
float x, y, z;
};
Vec3 rotateX(const Vec3& v, float angle) {
float c = std::cos(angle);
float s = std::sin(angle);
return { v.x, v.y * c - v.z * s, v.y * s + v.z * c };
}
Vec3 rotateY(const Vec3& v, float angle) {
float c = std::cos(angle);
float s = std::sin(angle);
return { v.x * c + v.z * s, v.y, -v.x * s + v.z * c };
}
Vec3 rotateZ(const Vec3& v, float angle) {
float c = std::cos(angle);
float s = std::sin(angle);
return { v.x * c - v.y * s, v.x * s + v.y * c, v.z };
}
void project(const Vec3& v, int& x2d, int& y2d, float width, float height, float zoom) {
float distance = 4.0f;
float z = v.z + distance;
float factor = zoom / z;
x2d = static_cast<int>(v.x * factor + width / 2);
y2d = static_cast<int>(v.y * factor + height / 2);
}
struct Star {
float x, y, z;
};
int main() {
const int width = 800;
const int height = 600;
WindowHandle* window = createWindow("DEMOSCENE CUBE", width, height);
if (!window) return -1;
std::vector<Vec3> vertices = {
{-1,-1,-1},{1,-1,-1},{1,1,-1},{-1,1,-1},
{-1,-1,1},{1,-1,1},{1,1,1},{-1,1,1}
};
std::vector<std::pair<int,int>> edges = {
{0,1},{1,2},{2,3},{3,0},
{4,5},{5,6},{6,7},{7,4},
{0,4},{1,5},{2,6},{3,7}
};
// Starfield
const int starCount = 300;
std::vector<Star> stars;
for (int i = 0; i < starCount; ++i) {
stars.push_back({
((rand() % 200) - 100) / 10.0f,
((rand() % 200) - 100) / 10.0f,
(rand() % 100) / 10.0f
});
}
float time = 0.0f;
while (!windowShouldClose(window)) {
pollEvents(window);
// Pulsing background
int bg = static_cast<int>((std::sin(time * 0.5f) + 1.0f) * 20);
clearScreen(window, Color(bg, 0, bg + 20));
// --- STARFIELD ---
for (auto& star : stars) {
star.z -= 0.05f;
if (star.z <= 0.1f)
star.z = 10.0f;
int sx = static_cast<int>((star.x / star.z) * 200 + width/2);
int sy = static_cast<int>((star.y / star.z) * 200 + height/2);
if (sx >= 0 && sx < width && sy >= 0 && sy < height)
drawPixel(window, sx, sy, Color(255,255,255));
}
// Color cycling (rainbow)
int r = static_cast<int>((std::sin(time) + 1) * 127);
int g = static_cast<int>((std::sin(time + 2) + 1) * 127);
int b = static_cast<int>((std::sin(time + 4) + 1) * 127);
float zoom = 150.0f + std::sin(time) * 50.0f;
// --- MULTI-CUBE EFFECT ---
for (int c = 0; c < 3; ++c) {
float offset = c * 2.5f - 2.5f;
std::vector<Vec3> transformed;
for (const auto& v : vertices) {
Vec3 r3 = rotateX(v, time + c);
r3 = rotateY(r3, time * 0.7f + c);
r3 = rotateZ(r3, time * 0.5f);
r3.x += offset;
transformed.push_back(r3);
}
for (const auto& edge : edges) {
int x1, y1, x2, y2;
project(transformed[edge.first], x1, y1, width, height, zoom);
project(transformed[edge.second], x2, y2, width, height, zoom);
drawLine(window, x1, y1, x2, y2, Color(r, g, b));
}
}
swapBuffers(window);
time += 0.02f;
delay(16);
}
destroyWindow(window);
return 0;
}
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