void DrawScene(void)
{
//Render Europe:
glEnable(GL_LIGHTING);
FlagTexture2.SetActive();
Flag.Render();
//Render Germany:
glEnable(GL_LIGHTING);
FlagTexture1.SetActive();
glPushMatrix();
glTranslatef(2.5,0.0,2.5);
Flag.Render();
glPopMatrix();
//Render Portugal:
glEnable(GL_LIGHTING);
FlagTexture3.SetActive();
glPushMatrix();
glTranslatef(-2.5,0.0,2.5);
Flag.Render();
glPopMatrix();
//Render ground:
GroundTexture.SetActive();
glEnable(GL_TEXTURE_2D);
glDisable(GL_LIGHTING);
float HalfGroundSize = 20.0f;
glTranslatef(0.0,-4.0,0.0);
glBegin(GL_POLYGON);
glNormal3f(0.0,1.0,0.0);
glTexCoord2f(0.0,0.0);
glVertex3f(-HalfGroundSize, 0.0, -HalfGroundSize);
glTexCoord2f(0.0,1.0);
glVertex3f(-HalfGroundSize, 0.0, +HalfGroundSize);
glTexCoord2f(1.0,1.0);
glVertex3f(+HalfGroundSize, 0.0, +HalfGroundSize);
glTexCoord2f(1.0,0.0);
glVertex3f(+HalfGroundSize, 0.0, -HalfGroundSize);
glEnd();
}
int main (int argc, char **argv)
{
//Initialize GLUT
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutInitWindowSize(600,600);
//Create a window with rendering context and everything else we need
glutCreateWindow("Flag in the wind");
//load the textures:
FlagTexture1.LoadFromFile("germany.bmp");
FlagTexture2.LoadFromFile("europe.bmp");
FlagTexture3.LoadFromFile("portugal.bmp");
GroundTexture.LoadFromFile("ground.bmp");
//init texture stuff:
GroundTexture.SetActive();
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
FlagTexture1.SetActive();
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
FlagTexture2.SetActive();
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
FlagTexture3.SetActive();
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
//initialize the flag:
Flag.Initialize(40,26,2.0f,50.0f,0.997f);
//and the values affecting it:
wind = F3dVector (0.2,0.04,0.00);
gravity = F3dVector(0.0,-0.015,0.0005);
//initialize camera:
Camera.Move(F3dVector(1.0f, 0.0f, 15.0f));
//Enable the vertex array functionality:
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY );
glClearColor(0.0,0.0,1.0,0.0); //blue background = sky ;-)
//Switch on solid rendering:
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE ,1);
glEnable(GL_DEPTH_TEST);
//Initialize lighting:
glEnable(GL_LIGHT1);
glEnable(GL_LIGHT2);
glEnable(GL_LIGHTING);
glFrontFace(GL_CCW); //Tell OGL which orientation shall be the front face
glShadeModel(GL_SMOOTH);
//initialize generation of random numbers:
srand((unsigned)time(NULL));
//Assign the two used Msg-routines
glutDisplayFunc(Display);
glutReshapeFunc(Reshape);
glutKeyboardFunc(KeyDown);
glutIdleFunc(Idle);
//Let GLUT get the msgs
glutMainLoop();
return 0;
}
void glutDrawMesh(mesh2df &mesh, COGLTexture &texture)
{
unsigned int num_tris = mesh.triangles.size();
unsigned int vertex;
unsigned int num_edges = mesh.edges.size();
unsigned int i;
// FIXME: correct for aspect ratio..
glEnable(GL_TEXTURE_2D);
texture.SetActive();
glBegin(GL_TRIANGLES);
for(i=0; i<num_tris; i++)
{
vector2df uv = mesh.uv[mesh.uv_triangles[i]];
glTexCoord2f(uv.X, uv.Y);
vertex = mesh.triangles[i];
//glColor3f(mesh.colors[vertex].r, mesh.colors[vertex].g, mesh.colors[vertex].b);
// transform.
vector2df p = mesh.points[vertex];
p += mesh.offset;
p.rotateBy(mesh.rotation, vector2df(0.0, 0.0));
p.X *= mesh.scale.X;
p.Y *= mesh.scale.Y;
p += mesh.position;
p -= mesh.offset;
glVertex2f(p.X, p.Y);
}
glEnd();
glDisable(GL_TEXTURE_2D);
/*
// draw all the edges (wireframe mode)
glBegin(GL_LINES);
glLineWidth(2.0);
// FIXME: this should only be for debugging? pass a bool.
for(i=0; i<num_edges; i++)
{
vertex = mesh.edges[i];
glColor3f(1.0, 1.0, 1.0);
// transform.
vector2df p = mesh.points[vertex];
p.rotateBy(mesh.rotation, vector2df(0.0, 0.0));
p.X *= mesh.scale.X;
p.Y *= mesh.scale.Y;
p += mesh.position;
glVertex2f(p.X, p.Y);
}
glEnd();
*/
}