Vertex Arrays

Vertex.cpp

/**
 * verticies Test,C++,OpenGL
 * I have no rights on this ~Syd
 */

typedef struct {
	GLfloat x, y, z;
	GLfloat r, g, b;
} Vertex;
const Vertex vertices[48] = {
	0, 0, 0, 0, 0, 0,
	30, 0, 0, 1, 0, 0,
	30, 0, 10, 1, 0, 1,
	0, 0, 10, 0, 0, 1,
	0, 20, 0, 0, 1, 0,
	30, 20, 0, 1, 1, 0,
	30, 20, 10, 1, 1, 1,
	0, 20, 10, 0, 1, 1 };
static int indexCount = 24;
static const GLuint indices[24] = {
	0, 1, 2, 3,
	0, 3, 7, 4,
	0, 4, 5, 1,
	1, 2, 6, 5,
	2, 3, 7, 6,
	4, 5, 6, 7
};
void initVertexArray(void) {
	glEnableClientState(GL_VERTEX_ARRAY);
	glEnableClientState(GL_COLOR_ARRAY);

	glVertexPointer(3, /* Komponenten pro Vertex (x,y,z) */
		GL_FLOAT, /* Typ der Komponenten */
		sizeof(Vertex), /* Offset zwischen 2 Vertizes im Array */
		&(vertices[0].x)); /* Zeiger auf die 1. Komponente */

	glColorPointer(3, GL_FLOAT, sizeof(Vertex), &(vertices[0].r));
}
void drawVertexArray(void) {
	glDrawElements(GL_QUADS, /* Primitivtyp */
		indexCount, /* Anzahl Indizes */
		GL_UNSIGNED_INT, /* Typ der Indizes */
		indices); /*Index-Array*/
}