bool animateVector2(MKey * keys, unsigned int keysNumber, float t, MVector2 * vector2)
{
M_PROFILE_SCOPE(animateVector2);
// no keys
if (keysNumber == 0)
return false;
// one key
if (keysNumber == 1)
{
(*vector2) = *((MVector2 *)keys->getData());
return true;
}
// out of range
MKey * keyMin = keys;
MKey * keyMax = keys + (keysNumber - 1);
int tMin = keyMin->getT();
int tMax = keyMax->getT();
if (t <= tMin)
{
(*vector2) = *((MVector2 *)keyMin->getData());
return true;
}
if (t >= tMax)
{
(*vector2) = *((MVector2 *)keyMax->getData());
return true;
}
// interpolation
for (unsigned int i = 1; i < keysNumber; i++)
{
MKey * key0 = keys;
MKey * key1 = keys+1;
int t0 = key0->getT();
int t1 = key1->getT();
if ((t >= t0) && (t <= t1))
{
float factor = (t - t0) / (float)(t1 - t0);
MVector2 * data0 = (MVector2 *)key0->getData();
MVector2 * data1 = (MVector2 *)key1->getData();
(*vector2) = (*data0) + ((*data1) - (*data0))*factor;
return true;
}
keys++;
}
return false;
}
bool animateQuaternion(MKey * keys, unsigned int keysNumber, float t, MQuaternion * quaternion)
{
// no keys
if (keysNumber == 0)
return false;
// one key
if (keysNumber == 1)
{
(*quaternion) = *((MQuaternion *)keys->getData());
return true;
}
// out of range
MKey * keyMin = keys;
MKey * keyMax = keys + (keysNumber - 1);
int tMin = keyMin->getT();
int tMax = keyMax->getT();
if (t <= tMin)
{
(*quaternion) = *((MQuaternion *)keyMin->getData());
return true;
}
if (t >= tMax)
{
(*quaternion) = *((MQuaternion *)keyMax->getData());
return true;
}
// interpolation
for (unsigned int i = 1; i < keysNumber; i++)
{
MKey * key0 = keys;
MKey * key1 = keys+1;
int t0 = key0->getT();
int t1 = key1->getT();
if (t == t0)
{
(*quaternion) = *(MQuaternion *)key0->getData();
return true;
}
if (t == t1)
{
(*quaternion) = *(MQuaternion *)key1->getData();
return true;
}
if ((t > t0) && (t < t1))
{
float factor = (t - t0) / (float)(t1 - t0);
MQuaternion * data0 = (MQuaternion *)key0->getData();
MQuaternion * data1 = (MQuaternion *)key1->getData();
(*quaternion) = MQuaternion(*data0, *data1, factor);
return true;
}
keys++;
}
return false;
}
