23 lines
605 B
C++
23 lines
605 B
C++
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//
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// Linear.cpp
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//
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// This code is derived from Universal Tween Engine
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// Licensed under Apache License 2.0 - http://www.apache.org/licenses/LICENSE-2.0
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//
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#include <math.h>
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#include <TweenEngine/paths/LinearPath.h>
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namespace TweenEngine
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{
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float LinearPath::compute(float t, float *points, int pointsCnt)
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{
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int segment = (int) floor((pointsCnt-1) * t);
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segment = segment > 0 ? segment : 0;
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segment = segment < (pointsCnt-2) ? segment : pointsCnt-2;
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t = t * (pointsCnt-1) - segment;
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return points[segment] + t * (points[segment+1] - points[segment]);
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}
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}
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