root/samples/hajimete/sample22.cpp

DEFINITIONS

1. drawAry
2. display
3. reshape
4. idle
5. otherInit
6. main

#include <gl/glut.h>

//------- 頂点データ-----------//

//｢6｣面､｢4｣頂点､1頂点はx,y,zの｢3｣要素

GLfloat vertexAry[6][4][3] =
{
        //1つめの面(v0-v1-v2-v3)

        { 
                {0.f,0.f,0.f},{1.f,0.f,0.f},
                {1.f,1.f,0.f},{0.f,1.f,0.f} 
        },
        //2つめの面(v1-v5-v6-v2)

        { 
                {1.f,0.f,0.f},{1.f,0.f,-1.f},
                {1.f,1.f,-1.f},{1.f,1.f,0.f} 
        },
        //3つめの面(v4-v7-v6-v5)

        { 
                {0.f,0.f,-1.f},{0.f,1.f,-1.f},
                {1.f,1.f,-1.f},{1.f,0.f,-1.f} 
        },
        //4つめの面(v4-v0-v3-v7)

        { 
                {0.f,0.f,-1.f},{0.f,0.f,0.f},
                {0.f,1.f,0.f},{0.f,1.f,-1.f} 
        },
        //5つめの面(v3-v2-v6-v7)

        { 
                {0.f,1.f,0.f},{1.f,1.f,0.f},
                {1.f,1.f,-1.f},{0.f,1.f,-1.f} 
        },
        //6つめの面(v0-v4-v5-v1)

        { 
                {0.f,0.f,0.f},{0.f,0.f,-1.f},
                {1.f,0.f,-1.f},{1.f,0.f,0.f} 
        }
};

//法線データ

GLfloat normalAry[6][4][3] =
{
        //1つめの面(v0-v1-v2-v3)

        { 
                {0.f,0.f,1.f},{0.f,0.f,1.f},
                {0.f,0.f,1.f},{0.f,0.f,1.f} 
        },
        //2つめの面(v1-v5-v6-v2)

        { 
                {1.f,0.f,0.f},{1.f,0.f,0.f},
                {1.f,0.f,0.f},{1.f,0.f,0.f} 
        },
        //3つめの面(v4-v7-v6-v5)

        { 
                {0.f,0.f,-1.f},{0.f,0.f,-1.f},
                {0.f,0.f,-1.f},{0.f,0.f,-1.f} 
        },
        //4つめの面(v4-v0-v3-v7)

        { 
                {-1.f,0.f,0.f},{-1.f,0.f,0.f},
                {-1.f,0.f,0.f},{-1.f,0.f,0.f} 
        },
        //5つめの面(v3-v2-v6-v7)

        { 
                {0.f,1.f,0.f},{0.f,1.f,0.f},
                {0.f,1.f,0.f},{0.f,1.f,0.f} 
        },
        //6つめの面(v0-v4-v5-v1)

        { 
                {0.f,-1.f,0.f},{0.f,-1.f,0.f}, 
                {0.f,-1.f,0.f},{0.f,-1.f,0.f} 
        }
};

//色データ

GLfloat colorAry[6][4][3] =
{
        //1つめの面(v0-v1-v2-v3)

        { 
                {0.f,0.f,1.f},{0.f,0.f,1.f},
                {0.f,0.f,1.f},{0.f,0.f,1.f} 
        },
        //2つめの面(v1-v5-v6-v2)

        { 
                {1.f,0.f,0.f},{1.f,0.f,0.f},
                {1.f,0.f,0.f},{1.f,0.f,0.f} 
        },
        //3つめの面(v4-v7-v6-v5)

        { 
                {0.f,1.f,1.f},{0.f,1.f,1.f},
                {0.f,1.f,1.f},{0.f,1.f,1.f} 
        },
        //4つめの面(v4-v0-v3-v7)

        { 
                {1.f,1.f,0.f},{1.f,1.f,0.f},
                {1.f,1.f,0.f},{1.f,1.f,0.f} 
        },
        //5つめの面(v3-v2-v6-v7)

        { 
                {0.f,1.f,0.f},{0.f,1.f,0.f},
                {0.f,1.f,0.f},{0.f,1.f,0.f} 
        },
        //6つめの面(v0-v4-v5-v1)

        { 
                {1.f,0.f,1.f},{1.f,0.f,1.f},
                {1.f,0.f,1.f},{1.f,0.f,1.f} 
        }
};

void drawAry(void)
{
        //有効化

        glEnableClientState(GL_VERTEX_ARRAY);
        glEnableClientState(GL_NORMAL_ARRAY);
        glEnableClientState(GL_COLOR_ARRAY);

        //データの関連付け

        glVertexPointer(3, GL_FLOAT, 0, vertexAry);//座標 

        glNormalPointer(GL_FLOAT, 0, normalAry);//法線

        glColorPointer(3,GL_FLOAT, 0, colorAry);//色


        glDrawArrays(GL_QUADS,0,4*6); //描画(4頂点*6面)


        //無効化

        glDisableClientState(GL_COLOR_ARRAY);
        glDisableClientState(GL_NORMAL_ARRAY);
        glDisableClientState(GL_VERTEX_ARRAY);
}
//------- 各種コールバック----------//

void display(void)
{
        static int angle = 0;
        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
        glLoadIdentity();
        gluLookAt(3.0, 4.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
        
        glPushMatrix();
        glRotatef(float(angle),1.f,0.f,0.f);
        glRotatef(float(angle+45),0.f,1.f,0.f);
        drawAry();
        glPopMatrix();

        glutSwapBuffers();
        if(++angle >= 360) angle = 0;
}

void reshape(int w, int h)
{
        glViewport(0,0,w,h);
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        gluPerspective(30.0, double(w)/h, 0.1, 200.0);
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();
}

void idle(void)
{
        glutPostRedisplay();
}
//------ その他初期設定-------//

void otherInit(void)
{
        glClearColor(1.f, 1.f, 1.f, 1.f);
        glEnable(GL_DEPTH_TEST);
        glColorMaterial(GL_FRONT,GL_AMBIENT_AND_DIFFUSE);
        glEnable(GL_COLOR_MATERIAL);
        glEnable(GL_LIGHT0);
        glEnable(GL_LIGHTING);
        glEnable(GL_NORMALIZE);//法線の正規化

}
//----------- メイン関数------------//

int main(int argc, char *argv[])
{
        //GLUTの初期設定

        glutInit(&argc, argv);
        glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_DOUBLE);
        glutInitWindowSize(640,480);
        glutCreateWindow("glDrawArray");

        //コールバック

        glutDisplayFunc(display);
        glutReshapeFunc(reshape);
        glutIdleFunc(idle);

        otherInit();//その他初期設定

        glutMainLoop();

        return 0;
}