A-simple-render/Poly.cpp at main · Snow-Shao/A-simple-render · GitHub

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#include<iostream>
#include"Pixel.h"
#include"Tooldev.h"
#include<Eigen/Core>
#include"Poly.h"
#define WIDTH 512.0f
#define HEIGHT 512.0f

#define LEFT -1
#define CENTER 0
#define RIGHT 1
#define OUTSIDE 2
#define CENT 3
#define INSIDE 4
using namespace Eigen;
Poly::Poly(const std::vector<Vertex>& vtxs) :vertexs(vtxs) {
    std::vector<std::vector<int>> faces = {
        { 0,1,2,3 },
        { 4,5,6,7 },
        { 0,4,7,3 },
        { 1,5,6,2 },
        { 3,2,6,7 },
        { 0,1,5,4 }
    };
    idxs.reserve(12);
    for (int i = 0; i < 6; i++) {
        int a, b, c, d;
        a = faces[i][0];
        b = faces[i][1];
        c = faces[i][2];
        d = faces[i][3];
        idxs.emplace_back(a, b, c);
        idxs.emplace_back(a, c, d);
    }
}
void Poly::draw(const Matrix4f& mat_VP, std::vector<Pixel>& framebuffer) {
    for (size_t i = 0; i < idxs.size(); i++) {
        if (i / 2 == 0) {
            LOG_INFO("Front faces");
        }
        else if (i / 2 == 1) {
            LOG_INFO("Back faces");
        }else if (i / 2 == 2) {
            LOG_INFO("Left faces");
        }else if (i / 2 == 3) {
            LOG_INFO("Right faces");
        }else if (i / 2 == 4) {
            LOG_INFO("Up faces");
        }else if (i / 2 == 5) {
            LOG_INFO("Down faces");
        }
        Vertex& p1 = vertexs[idxs[i].get_ip1()];
        Vertex& p2 = vertexs[idxs[i].get_ip2()];
        Vertex& p3 = vertexs[idxs[i].get_ip3()];
        Triangle t(mat_VP, p1, p2, p3);
        t.draw(framebuffer);
    }
}