实现double CIlluminationViewGouraud int Pt3 int Vertices43 double Normals43 int lightPos3 double Ip double Kd

{ // 计算视点到顶点的向量 double viewVector[3]; viewVector[0] = Pt[0] - lightPos[0]; viewVector[1] = Pt[1] - lightPos[1]; viewVector[2] = Pt[2] - lightPos[2];

// 计算每个顶点的光强度
double intensities[4];
for (int i = 0; i < 4; i++) {
    // 计算光线和法向量的点积
    double dotProduct = 0.0;
    for (int j = 0; j < 3; j++) {
        dotProduct += Normals[i][j] * viewVector[j];
    }
    // 根据光线和法向量的夹角计算光强度
    if (dotProduct > 0) {
        intensities[i] = Ip * Kd * dotProduct;
    } else {
        intensities[i] = 0.0;
    }
}

// 计算每个像素的颜色
double colors[3];
for (int i = 0; i < 3; i++) {
    colors[i] = 0.0;
    for (int j = 0; j < 4; j++) {
        colors[i] += intensities[j] * Vertices[j][i];
    }
    colors[i] = max(0.0, min(255.0, colors[i]));
}

// 返回像素的颜色
return (colors[0] << 16) | (colors[1] << 8) | colors[2];

}