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CubicHermiteSplineWithArcLength optimization

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This commit is contained in:
Anthony Thibault 2019-02-05 18:11:30 -08:00
parent a959d69554
commit 708309fa63
1 changed files with 5 additions and 3 deletions
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8
libraries/shared/src/CubicHermiteSpline.h
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@ -60,7 +60,7 @@ protected:
class CubicHermiteSplineFunctorWithArcLength : public CubicHermiteSplineFunctor {
public:
enum Constants { NUM_SUBDIVISIONS = 30 };
enum Constants { NUM_SUBDIVISIONS = 15 };
CubicHermiteSplineFunctorWithArcLength() : CubicHermiteSplineFunctor() {
memset(_values, 0, sizeof(float) * (NUM_SUBDIVISIONS + 1));
@ -71,11 +71,13 @@ public:
float alpha = 0.0f;
float accum = 0.0f;
_values[0] = 0.0f;
glm::vec3 prevValue = this->operator()(alpha);
for (int i = 1; i < NUM_SUBDIVISIONS + 1; i++) {
accum += glm::distance(this->operator()(alpha),
this->operator()(alpha + DELTA));
glm::vec3 nextValue = this->operator()(alpha + DELTA);
accum += glm::distance(prevValue, nextValue);
alpha += DELTA;
_values[i] = accum;
prevValue = nextValue;
}
}