float AnimationTrack::getLength() const
{
if( getNumKeyFrames() <= 0 )
return 0;
return mKeyFrames[ getNumKeyFrames() - 1 ]->getTime();
}
void AnimationTrack::deleteKeyFrame( unsigned int index )
{
assert( index < getNumKeyFrames() );
delete mKeyFrames[index];
mKeyFrames.erase( mKeyFrames.begin() + index );
_updateKeyFrameIndices();
}
void Spline::displayline() {
glColor3f(0.7, 0.7, 0.0);
glPointSize(8.0);
glBegin(GL_POINTS);
int length = getNumKeyFrames() + 1;
for (int i = -1; i < length; ++i) {
Vec3D vec = getKeyPoint(i);
glVertex3f(vec.getX(), vec.getY(), vec.getZ());
}
glEnd();
glColor3f(1.0, 1.0, 1.0);
glBegin(GL_LINE_STRIP);
length = getNumKeyFrames() - 1;
for (float u = 0; u < length; u += 0.02) {
Vec3D v = getPoint(u);
//glColor3f(0.5 + sin(u * 2 * M_PI) / 2.0, 0.5 + cos(u * 2 * M_PI) / 2.0, 0);
glVertex3f(v.getX(), v.getY(), v.getZ());
}
glEnd();
}
/*
* u >= 0 only
*/
Vec3D Spline::getPoint(float u) {
double part;
double frac = modf(u, &part);
int v = ((int) part ) % (getNumKeyFrames() - 1);
return catmull_rom(getKeyPoint(v-1), getKeyPoint(v), getKeyPoint(v+1), getKeyPoint(v+2), frac);
}
float Spline::getULength() {
return (getNumKeyFrames() - 1);
}
KeyFrame* AnimationTrack::getKeyFrame( unsigned int index ) const
{
assert( index < getNumKeyFrames() );
return mKeyFrames[index];
}
