void display(void)
{
float t = glutGet(GLUT_ELAPSED_TIME)/500.0;
static float last_t = 0;
float dt = t - last_t; last_t = t;
printError("pre display");
// clear the screen
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
lookAt(position.x,position.y,position.z,
look_at.x,look_at.y,look_at.z,
0,1,0,
camMatrix);
//myMatrix[3] += dir*0.01;
draw_billboard();
for(int i = 0; i < NUMBER_OF_WINDMILLS; ++i) {
draw_windmill(&my_windmills[i], dt);
}
//glBindTexture(GL_TEXTURE_2D, bunnyTextureID);
//glUniform1i(glGetUniformLocation(programs[WINDMILL_PROGRAM], "texUnit"), 0); // Texture unit 0
glutSwapBuffers();
}
void draw_scene()
{
static float ang_self = 0.0; /*Define the angle of self-rotate */
static float angle = 0.0;
glLightfv(GL_LIGHT4, GL_POSITION, lit4_position);
glLightfv(GL_LIGHT4, GL_SPOT_DIRECTION, lit4_direction);
glLightfv(GL_LIGHT5, GL_POSITION, lit5_position);
glLightfv(GL_LIGHT5, GL_SPOT_DIRECTION, lit5_direction);
glLightfv(GL_LIGHT1, GL_POSITION, lit1_position); /*fixed position---*/
glDisable(GL_TEXTURE_2D);
draw_floor();
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glTranslatef(0.0, 0.0, 0.0);
glMatrixMode(GL_MODELVIEW);
draw_slope();
draw_axes();
draw_object();
/*-------Draw the billboard ----*/
glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glBindTexture(GL_TEXTURE_2D, textName[2]);
glEnable(GL_TEXTURE_2D);
draw_billboard(5.0*4.0, -3.0*4.0, 5.0, 8.0);
draw_billboard(6.0*4.0, -5.0*4.0, 5.0, 8.0);
draw_billboard(3.0*4.0, -6.0*4.0, 5.0, 8.0);
draw_billboard(2.0*4.0, -7.0*4.0, 5.0, 8.0);
draw_billboard(7.0*4.0, -2.0*4.0, 5.0, 8.0);
glDisable(GL_TEXTURE_2D);
/*-------Draw the car body which is a cube----*/
glTranslatef(position[0], position[1], position[2]);
glRotatef(-up_ang, 1.0, 0.0, 0.0);
glRotatef(self_ang, 0.0, 1.0, 0.0);
glPushMatrix(); /* Save M1 coord. sys */
draw_cube();
glPopMatrix(); /* Get M1 back */
/*-------Draw the front wheels -----*/
glColor3f(1.0, 0.0, 0.0);
glPushMatrix(); /* Save M1 coord. sys */
glTranslatef(-4.0, 0.0, 3.0); /* Go to left wheel position */
glutSolidTorus(0.5, /* inner radius */
1.0, /* outer radius */
24, /* divided into 18 segments */
12); /* 12 rings */
glPopMatrix();
glPushMatrix(); /* Save M1 coord. sys */
glTranslatef(-4.0, 0.0, -3.0);/* Go to right wheel position */
glutSolidTorus(0.5, /* inner radius */
1.0, /* outer radius */
24, /* divided into 18 segments */
12); /* 12 rings */
glPopMatrix();
/*------Draw back wheels ----*/
glColor3f(1.0, 0.4, 0.0);
glPushMatrix(); /* Save M1 coord. sys */
glTranslatef(6.0, 0.0, 0.0); /* Go to left wheel position */
glutSolidTorus(0.5, /* inner radius */
1.0, /* outer radius */
24, /* divided into 18 segments */
12); /* 12 rings */
glPopMatrix();
glColor3f(1.0, 0.4, 0.4);
glPushMatrix(); /* Save M1 coord. sys */
glTranslatef(0.0, 1.5, 7.5); /* Go to left wheel position */
glRotatef(-90.0, 1.0, 0.0, 0.0);
glutSolidTorus(0.5, /* inner radius */
3.0, /* outer radius */
24, /* divided into 18 segments */
12); /* 12 rings */
glPopMatrix();
glColor3f(1.0, 0.4, 0.4);
glPushMatrix(); /* Save M1 coord. sys */
glTranslatef(0.0, 1.5, -7.5); /* Go to left wheel position */
glRotatef(-90.0, 1.0, 0.0, 0.0);
glutSolidTorus(0.5, /* inner radius */
3.0, /* outer radius */
24, /* divided into 18 segments */
12); /* 12 rings */
glPopMatrix();
glColor3f(1.0, 1.0, 1.0);
glPushMatrix();
glTranslatef(0.0, 1.5, 7.5);
glRotatef(bld_ang, 0.0, 1.0, 0.0);
draw_blade();/* draw the first blade */
glRotatef(120, 0.0, 1.0, 0.0);
draw_blade();/* draw the first blade */
glRotatef(120, 0.0, 1.0, 0.0);
draw_blade();/* draw the first blade */
glPopMatrix();
glColor3f(1.0, 1.0, 1.0);
glPushMatrix();
glTranslatef(0.0, 1.5, -7.5);
glRotatef(bld_ang, 0.0, 1.0, 0.0);
draw_blade();
glRotatef(120, 0.0, 1.0, 0.0);
draw_blade();
glRotatef(120, 0.0, 1.0, 0.0);
draw_blade();
glPopMatrix();
}
