Cube tournant avec camera movement et eclairage

Commenter

Contenu du snippet

Ce programme dessine un cube et utilise la fonction glRotate() pour le faire tourner, la fonction OnKey() maitrise le camera movement et un simple eclairage ....
PS: mon second prog =)

Source / Exemple : 


#include <windows.h>
#include <gl\glut.h>

// variable for camera Distance
float Distance = -30.0f;

//float g_LightPosition[] = {0, 10, (Distance)+30};
float g_bLight = true;	

typedef unsigned char uchar;

void RenderScene (void)
{
	// angle of revolution
	static float fElect1 = 0.0f;

	//clears screen with current clearing color
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	//Loads Identity
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	

	// variable for the z-axis in glTranslate 
	// controlled by the camera distance
	glTranslatef(0.0f, 0.0f, Distance);

	// Rotation controlled by variable (angle of revolution)
	glRotatef(fElect1, 1.0f, 0.0f, 0.0f);
	glRotatef(fElect1, 0.0f, 1.0f, 0.0f);

	glBegin(GL_QUADS);

		// Front face
		glColor3f(1.0f, 0.0f, 0.0f);
		glVertex3f(2.5f, 2.5f, 2.5f);

		glColor3f(0.0f, 1.0f, 0.0f);
		glVertex3f(2.5f, -2.5f, 2.5f);

		glColor3f(0.0f, 0.0f, 1.0f);
		glVertex3f(-2.5f, -2.5f, 2.5f);

		glColor3f(1.0f, 1.0f ,0.0f);
		glVertex3f(-2.5, 2.5f ,2.5f);

		// Back Face
		glColor3f(1.0f, 0.0f, 0.0f);
		glVertex3f(2.5f, 2.5f, -2.5f);

		glColor3f(0.0f, 1.0f, 0.0f);
		glVertex3f(2.5f, -2.5f, -2.5f);

		glColor3f(0.0f, 0.0f, 1.0f);
		glVertex3f(-2.5f, -2.5f, -2.5f);

		glColor3f(1.0f, 1.0f ,0.0f);
		glVertex3f(-2.5, 2.5f ,-2.5f);

		// Right-Side Face

		glColor3f(1.0f, 0.0f, 0.0f);
		glVertex3f(2.5f, 2.5f, 2.5f);

		glColor3f(0.0f, 1.0f, 0.0f);
		glVertex3f(2.5f, -2.5f, 2.5f);

		glColor3f(0.0f, 0.0f, 1.0f);
		glVertex3f(2.5f, -2.5, -2.5f);

		glColor3f(1.0f, 1.0f, 0.0f);
		glVertex3f(2.5f, 2.5f, -2.5f);

		//Left Face

		glColor3f(1.0f, 0.0f, 0.0f);
		glVertex3f(-2.5f, 2.5f, 2.5f);

		glColor3f(0.0f, 1.0f, 0.0f);
		glVertex3f(-2.5f, -2.5f, 2.5f);

		glColor3f(0.0f, 0.0f, 1.0f);
		glVertex3f(-2.5f, -2.5, -2.5f);

		glColor3f(1.0f, 1.0f, 0.0f);
		glVertex3f(-2.5f, 2.5f, -2.5f);

		// Top Face 
		glColor3f(1.0f, 0.0f, 0.0f);
		glVertex3f(2.5f, 2.5f, 2.5f);

		glColor3f(0.0f, 1.0f, 0.0f);
		glVertex3f(2.5f, 2.5f, -2.5f);

		glColor3f(0.0f, 0.0f, 1.0f);
		glVertex3f(-2.5f, 2.5f, -2.5);

		glColor3f(1.0f,1.0f, 0.0f);
		glVertex3f(-2.5f, 2.5f, 2.5f);

		//Bottom Face
		glColor3f(1.0f, 0.0f, 0.0f);
		glVertex3f(2.5f, -2.5f, 2.5f);

		glColor3f(0.0f, 1.0f, 0.0f);
		glVertex3f(2.5f, -2.5f, -2.5f);

		glColor3f(0.0f, 0.0f, 1.0f);
		glVertex3f(-2.5f, -2.5f, -2.5);

		glColor3f(1.0f,1.0f, 0.0f);
		glVertex3f(-2.5f, -2.5f, 2.5f);

	glEnd();

	// Rotate by 10 degrees
	fElect1 += 0.5f;

	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();

	// Swap the buffers
	glutSwapBuffers();

	// Update our scene
	glutPostRedisplay();

	
}

void SetupRC( void )
{
	// Clearing color
	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);

	GLfloat ambient[] = {0.8f, 0.8f, 0.8f, 1.0f};

	// Enable depth test
	glEnable(GL_DEPTH_TEST);
	glEnable(  GL_LIGHTING );

	glLightModelfv( GL_LIGHT_MODEL_AMBIENT, ambient);	

	glEnable(GL_COLOR_MATERIAL);

	glColorMaterial(GL_FRONT,GL_AMBIENT_AND_DIFFUSE);

}

void ChangeSize (GLsizei w, GLsizei h)
{
	// Aspect ratio variable
	GLfloat fAspect = 0.0f;

	// prevent a divide by zero
	if ( h == 0 )
		h = 1;

	// Sets the viewport to window dimensions
	glViewport(0, 0, w, h);

	// calculates the aspect ration
	fAspect = (GLfloat)w / (GLfloat)h;

	
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();

	// Perspective with angle 70 degrees, aspect ration
	// Near and Far clip
	gluPerspective(70.0f, fAspect, 1.0f, 400.0f);

	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
}

void OnKey( uchar Key, int X, int Y )
{
	// Key input for switching zoom IN/OUT
	switch( Key )
	{
		case 'i': case 'I':
		Distance += 1.0f;
		break;

		case 'o': case 'O':
		Distance -= 1.0f;
		break;
	}
}

void main (void)
{
	glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB );
	glutCreateWindow("Teapot");

	SetupRC();

	glutDisplayFunc(RenderScene);
	glutReshapeFunc(ChangeSize);
	glutKeyboardFunc(OnKey);

	glutMainLoop();

}

A voir également

S'inscrire maintenant

Vous n'êtes pas encore membre ?

inscrivez-vous, c'est gratuit et ça prend moins d'une minute !

Les membres obtiennent plus de réponses que les utilisateurs anonymes.

Le fait d'être membre vous permet d'avoir un suivi détaillé de vos demandes et codes sources.

Le fait d'être membre vous permet d'avoir des options supplémentaires.

Du même auteur (BenjaminRare)