计算机图形学：绘制一个3d交互场景（1）

OpenGL作为一种图形与硬件的接口，与其他图形程序开发工具相比较，它提供了众多图形函数，直观的编程环境简化了三维图形的绘制过程，使用OpenGL搭建一个三维场景，能够通过输入设备与场景内物体交互。

豪华单间

配置环境：vs22+freeglut库

1.绘制墙体使其成为封闭空间，在封闭空间内完成场景的布置

//空间基本架构
void drawWall()
{
    
    
    glColor3f(0.47, 0.54, 0.60);//rgb颜色可调
    GLfloat matWall[] = {
    
     0.37, 0.83, 0.98};
	GLfloat matBlack[] = {
    
     0, 0, 0, 1 };
	GLfloat matWhite[] = {
    
     1, 1, 1, 1 };
	GLfloat matShininess[] = {
    
     40 };
	glMaterialfv(GL_FRONT, GL_AMBIENT, matWall);
	glMaterialfv(GL_FRONT, GL_DIFFUSE, matWall);
	glMaterialfv(GL_FRONT, GL_SPECULAR, matWhite);
	glMaterialfv(GL_FRONT, GL_SHININESS, matShininess);
	glMaterialfv(GL_FRONT, GL_EMISSION, matBlack);
    // 左边
    drawQuads(-10, 10, -20,
        -10, 10, 0,
        -10, -10, 0,
        -10, -10, -20);
    // 右边
    drawQuads(10, -10, -20,
        10, -10, 0,
        10, 10, 0,
        10, 10, -20);
    // back
    drawQuads(10, 10, -20,
        -10, 10, -20,
        -10, -10, -20,
        10, -10, -20);
    // 天花板
    drawQuads(10, 10, -20,
        10, 10, 0,
        -10, 10, 0,
        -10, 10, -20);
    // 地板
    glColor3f(0.75, 0.75, 0.75);
    drawQuads(-10, -10, -20,
        -10, -10, 0,
        10, -10, 0,
        10, -10, -20);
}

glMaterialfv ()函数指定照明模型的材料参数。

2.绘制一张床将其放在角落（左）

void drawBed()
{
    
    
    glColor3f(1, 0.8, 0.5);
    glMaterialfv(GL_FRONT, GL_AMBIENT, matBrown);
    glMaterialfv(GL_FRONT, GL_DIFFUSE, matBrown);
    glMaterialfv(GL_FRONT, GL_SPECULAR, matWhite);
    glMaterialfv(GL_FRONT, GL_SHININESS, matShininess);
    glMaterialfv(GL_FRONT, GL_EMISSION, matBlack);
    // 床头
    glPushMatrix();
    glTranslatef(-9.5, -6, -16);
    glScalef(1, 8, 8);
    glutSolidCube(1);
    glPopMatrix();
    // 床尾
    glPushMatrix();
    glTranslatef(4.5, -8.5, -16);
    glScalef(1, 3, 8);
    glutSolidCube(1);
    glPopMatrix();
    //床板
    glPushMatrix();
    glTranslatef(-2, -7, -16);
    glScalef(14, 1, 8);
    glutSolidCube(1);
    glPopMatrix();
    //床垫
    glColor3f(0.6, 0.97, 0.6);
    glMaterialfv(GL_FRONT, GL_AMBIENT, matGreen);
    glMaterialfv(GL_FRONT, GL_DIFFUSE, matGreen);
    glMaterialfv(GL_FRONT, GL_SPECULAR, matWhite);
    glMaterialfv(GL_FRONT, GL_SHININESS, matShininess);
    glMaterialfv(GL_FRONT, GL_EMISSION, matBlack);
    glPushMatrix();
    glTranslatef(-2, -6, -16);
    glScalef(14, 1, 8);
    glutSolidCube(1);
    glPopMatrix();
}

效果图如下：

3.房间的一些基本配置

void drawDesk()
{
    
    
    glColor3f(1, 0.8, 0.5);
    glMaterialfv(GL_FRONT, GL_AMBIENT, matBrown);
    glMaterialfv(GL_FRONT, GL_DIFFUSE, matBrown);
    glMaterialfv(GL_FRONT, GL_SPECULAR, matWhite);
    glMaterialfv(GL_FRONT, GL_SHININESS, matShininess);
    glMaterialfv(GL_FRONT, GL_EMISSION, matBlack);
	//书桌
    glPushMatrix();
    glTranslatef(9, -4, -10);
    glScalef(4, 0.5, 20);
    glutSolidCube(1);
    glPopMatrix();

    glPushMatrix();
    glTranslatef(9.75, -7, -10);
    glScalef(0.5, 6, 20);
    glutSolidCube(1);
    glPopMatrix();
	//床头柜
	glPushMatrix();
    glTranslatef(-8, -8, -10);
    glScalef(4, 4, 4);
    glutSolidCube(1);
    glPopMatrix();
}

这桌子建议改成实体的bushi
再添置一个茶壶 bushi

void drawTeapot()
{
    
    
    glColor3f(0.80,0.71,0.34);
    glMaterialfv(GL_FRONT, GL_AMBIENT, matBrown);
    glMaterialfv(GL_FRONT, GL_DIFFUSE, matBrown);
    glMaterialfv(GL_FRONT, GL_SPECULAR, matWhite);
    glMaterialfv(GL_FRONT, GL_SHININESS, matShininess);
    glMaterialfv(GL_FRONT, GL_EMISSION, matBlack);

    glPushMatrix();
    glTranslatef(-8, -5.5, -10);
    glRotatef(-100, 0, 1, 0);
    glutSolidTeapot(0.8);
    glPopMatrix();
}

场景先写到这儿吧，其他物品随意可加的，下一篇写画安卓精灵求个关注
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