main.cpp

#include<iostream>
#include<vector>
#include<algorithm>
#include<Eigen/Core>
#include<glad/glad.h>
#include<GLFW/glfw3.h>
#include"Tooldev.h"
#include"Triangle.h"
#include"Pixel.h"
#include"Poly.h"
#include"GLWindow.h"
using namespace Eigen;
class Triangle_Index {
public:
    Triangle_Index(size_t ip1,size_t ip2,size_t ip3):p1_idx(ip1),p2_idx(ip2),p3_idx(ip3) {}
    std::vector<size_t> get_tIndex() {
        std::vector<size_t> t_idxs;
        t_idxs.resize(3);
        t_idxs[0] = p1_idx;
        t_idxs[1] = p2_idx;
        t_idxs[2] = p3_idx;
        return t_idxs;
    }
private:
    size_t p1_idx;
    size_t p2_idx;
    size_t p3_idx;
};
#define WIDTH 512.0f
#define HEIGHT 512.0f
#define FOV 60.0f
#define NEARF 1.0f
#define FARF 100.0f
int main() {
    LOG_INFO("===============Begin===============");
    GLWindow gwindow1(WIDTH,HEIGHT,"Snow's Screen");
    std::vector<Pixel> framebuffer(WIDTH * HEIGHT);
    std::vector<float> depthbuffer(WIDTH * HEIGHT);
    Vector3f cam(0, 0, 5);
    Vector3f tar(0, 0, 0);
    Vector3f up(0, 1, 0);
    Matrix4f mat_VP = getmatr_VP(FOV, WIDTH, HEIGHT, NEARF, FARF, cam, tar, up);
    LOG_INFO("Creat a Triangle");
    // test ...
    std::vector<Vertex> points = {
        Vertex(-1.0f, -1.0f, -1.0f, "red"),
        // 1: 前下右
        Vertex(1.0f, -1.0f, -1.0f, "green"),
        // 2: 前上右
        Vertex(1.0f, 1.0f, -1.0f, "blue"),
        // 3: 前上左
        Vertex(-1.0f, 1.0f, -1.0f, "yellow"),
        // 4: 后下左
        Vertex(-1.0f, -1.0f, -3.0f, "cyan"),
        // 5: 后下右
        Vertex(1.0f, -1.0f, -3.0f, "magenta"),
        // 6: 后上右
        Vertex(1.0f, 1.0f, -3.0f, "white"),
        // 7: 后上左
        Vertex(-1.0f, 1.0f, -3.0f, "gray")
    };
    Poly p(points);
    const Pixel& background_black = Pixel::create_black();
    LOG_INFO("Init done");
    LOG_INFO("Start the render loop");
    LOG_INFO("Start to draw : Triangle ...");
    while (!gwindow1.shouldClose()) {
        for (auto& px : framebuffer) {
            px.depth = 1e9;
        }
        std::fill(framebuffer.begin(), framebuffer.end(), background_black);
        LOG_INFO("Drawing ...");
        p.draw(mat_VP, framebuffer);
        gwindow1.update(framebuffer);
    }
    LOG_INFO("===============end===============");
}