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Docs: clarify which axis is used when mirroring

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Lovell Fuller
2023-05-11 10:24:24 +01:00
parent 5255964c79
commit e873978e53
4 changed files with 11 additions and 7 deletions
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4
src/pipeline.cc
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@@ -380,11 +380,11 @@ class PipelineWorker : public Napi::AsyncWorker {
if (autoRotation != VIPS_ANGLE_D0) {
image = image.rot(autoRotation);
}
// Flip (mirror about Y axis)
// Mirror vertically (up-down) about the x-axis
if (baton->flip || autoFlip) {
image = image.flip(VIPS_DIRECTION_VERTICAL);
}
// Flop (mirror about X axis)
// Mirror horizontally (left-right) about the y-axis
if (baton->flop || autoFlop) {
image = image.flip(VIPS_DIRECTION_HORIZONTAL);
}