void TranslationCatmull::glTranslate() {
static float up[3] = { 0.0, 1.0, 0.0 };
float res[3], dir[3], left[3], m[16];
float now = glutGet(GLUT_ELAPSED_TIME);
float timeMiliSeconds = time * 1000;
float t = fmod(now, timeMiliSeconds) / timeMiliSeconds;
getGlobalCatmullRomPoint(t, res);
getGlobalCatmullRomDirection(t, dir);
drawCatmullRomCurve();
glTranslatef(res[0], res[1], res[2]);
}
void TranslationCatmull::loadCatmullRomCurve() {
float res[3], t;
vector<float> p;
for (t = 0; t < 1; t += 0.001) {
getGlobalCatmullRomPoint(t, res);
p.push_back(res[0]);
p.push_back(res[1]);
p.push_back(res[2]);
}
glBindBuffer(GL_ARRAY_BUFFER, coordinatesID);
glBufferData(GL_ARRAY_BUFFER, p.size() * sizeof(float), &p.front(), GL_STATIC_DRAW);
}
void renderCatmullRomCurve(float** p, int point_count) {
// desenhar a curva usando segmentos de reta - GL_LINE_LOOP
float n_pontos = 100;
float res[3];
float inc = 1 / n_pontos;
float f = 0;
glDisable(GL_LIGHTING);
glColor3f(0.5, 0.5, 0.5);
glBegin(GL_LINE_LOOP);
for (int a = 0; a < n_pontos; a++)
{
f += inc;
getGlobalCatmullRomPoint(p,point_count, f, res);
glVertex3fv(res);
}
glEnd();
glEnable(GL_LIGHTING);
}
