#include <Path2d.h>
Accelerates the calculation of various operations on Path2d. Useful if doing repeated calculations, otherwise just use Path2d member functions.
cinder::Path2dCalcCache::Path2dCalcCache |
( |
const Path2d & |
path | ) |
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const Path2d& cinder::Path2dCalcCache::getPath2d |
( |
| ) |
const |
float cinder::Path2dCalcCache::getLength |
( |
| ) |
const |
float cinder::Path2dCalcCache::calcNormalizedTime |
( |
float |
relativeTime, |
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bool |
wrap = true , |
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float |
tolerance = 1.0e-03f , |
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int |
maxIterations = 16 |
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) |
| const |
Calculates the t-value corresponding to relativeTime in the range [0,1) within epsilon of tolerance. For example, relativeTime of 0.5f returns the t-value corresponding to half the length. maxIterations dictates the number of refinement loop iterations allowed, setting an upper bound for worst-case performance.
float cinder::Path2dCalcCache::calcTimeForDistance |
( |
float |
distance, |
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bool |
wrap = true , |
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float |
tolerance = 1.0e-03f , |
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int |
maxIterations = 16 |
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) |
| const |
Calculates a t-value corresponding to arc length distance. If wrap then the t-value loops inside the 0-1 range as distance exceeds the arc length.
vec2 cinder::Path2dCalcCache::getPosition |
( |
float |
t | ) |
const |
Returns the point on the curve at parameter t, which lies in the range [0,1]
The documentation for this class was generated from the following files: