28 lines
701 B
C++
28 lines
701 B
C++
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#include "DistanceMapping.h"
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namespace msdfgen {
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DistanceMapping DistanceMapping::inverse(Range range) {
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double rangeWidth = range.upper-range.lower;
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return DistanceMapping(rangeWidth, range.lower/(rangeWidth ? rangeWidth : 1));
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}
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DistanceMapping::DistanceMapping() : scale(1), translate(0) { }
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DistanceMapping::DistanceMapping(Range range) : scale(1/(range.upper-range.lower)), translate(-range.lower) { }
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double DistanceMapping::operator()(double d) const {
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return scale*(d+translate);
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}
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double DistanceMapping::operator()(Delta d) const {
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return scale*d.value;
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}
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DistanceMapping DistanceMapping::inverse() const {
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return DistanceMapping(1/scale, -scale*translate);
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}
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}
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