C++ (Cpp) ssgHOT Beispiele

Beispiel #1

Datei: util.cpp Projekt: 702nADOS-archive/AutoPlug-3.0

float
getHOT(ssgRoot *root, float x, float y)
{
  sgVec3 test_vec;
  sgMat4 invmat;
  sgMakeIdentMat4(invmat);

  invmat[3][0] = -x;
  invmat[3][1] = -y;
  invmat[3][2] =  0.0f         ;

  test_vec [0] = 0.0f;
  test_vec [1] = 0.0f;
  test_vec [2] = 100000.0f;

  ssgHit *results;
  int num_hits = ssgHOT (root, test_vec, invmat, &results);

  float hot = -1000000.0f;

  for (int i = 0; i < num_hits; i++)
  {
    ssgHit *h = &results[i];

    float hgt = - h->plane[3] / h->plane[2];

    if (hgt >= hot)
      hot = hgt;
  }

  return hot;
}

Beispiel #2

Datei: grutil.cpp Projekt: chagge/gym_torcs

// TODO: more efficient solution, this one is slow.
float grGetHOT(float x, float y)
{
	sgVec3 test_vec;
	sgMat4 invmat;
	sgMakeIdentMat4(invmat);

	invmat[3][0] = -x;
	invmat[3][1] = -y;
	invmat[3][2] =  0.0f         ;

	test_vec [0] = 0;
	test_vec [1] = 0;
	test_vec [2] = 100000.0f;

	ssgHit *results;
	int num_hits = ssgHOT (TheScene, test_vec, invmat, &results);
	float hot = -1000000.0f;

	for (int i = 0; i < num_hits; i++) {
		ssgHit *h = &results[i];

		float hgt = (h->plane[2] == 0.0 ? 0.0 : - h->plane[3] / h->plane[2]);

		if (hgt >= hot) {
			hot = hgt;
		}
	}

	return hot;
}