#include "camera.h"

pCamera creerCamera (Vector4 pos, Vector4 vise, Vector4 up)
{
	pCamera c = (pCamera) malloc (sizeof(tCamera));
	
	repereCamera (c, pos, vise, up);
	
	return c;
}

void repereCamera (pCamera c, Vector4 eye, Vector4 vise, Vector4 up)
{
	copyVector4 (eye,c->O);
	
	diffVector4(vise, eye, c->Z);
	normalizeVector4 (c->Z);
	
	crossProductVector4 (up, c->Z, c->X);
	normalizeVector4 (c->X);
	
	crossProductVector4 (c->Z, c->X, c->Y);
}

void eyeCamera (pCamera c, Vector4 eye)
{
	copyVector4 (c->O, eye);
}

void viseCamera (pCamera c, Vector4 vise)
{
	sumVector4 (c->O, c->Z, vise);
}

void upCamera (pCamera c, Vector4 up)
{
	copyVector4 (c->Y, up);
}

void avanceCamera (pCamera c, float pas)
{
	/* ************************* */
	/* A coder par les etudiants */
	/* ************************* */
}

void tourneCamera (pCamera c, float pas)
{
	/* ************************* */
	/* A coder par les etudiants */
	/* ************************* */
}

void leveCamera (pCamera c, float pas)
{
	/* ************************* */
	/* A coder par les etudiants */
	/* ************************* */
}