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AffineTransform: Add isOnlyTranslationOrScale() helper

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reuk 2024-05-08 19:49:57 +01:00
parent 592df26ff0
commit bd2aea9676
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2 changed files with 9 additions and 2 deletions
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5
modules/juce_graphics/geometry/juce_AffineTransform.cpp
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@ -239,6 +239,11 @@ bool AffineTransform::isOnlyTranslation() const noexcept
&& exactlyEqual (mat11, 1.0f);
}
bool AffineTransform::isOnlyTranslationOrScale() const noexcept
{
return exactlyEqual (mat01, 0.0f) && exactlyEqual (mat10, 0.0f);
}
float AffineTransform::getDeterminant() const noexcept
{
return (mat00 * mat11) - (mat01 * mat10);

6
modules/juce_graphics/geometry/juce_AffineTransform.h
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@ -258,10 +258,12 @@ public:
/** Returns true if this transform maps to a singularity - i.e. if it has no inverse. */
bool isSingularity() const noexcept;
/** Returns true if the transform only translates, and doesn't scale or rotate the
points. */
/** Returns true if the transform only translates, and doesn't scale or rotate the points. */
bool isOnlyTranslation() const noexcept;
/** Returns true if the transform only translates and/or scales. */
bool isOnlyTranslationOrScale() const noexcept;
/** If this transform is only a translation, this returns the X offset.
@see isOnlyTranslation
*/