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o4oren/RotaryKnobView.kt

Last active May 2, 2020 17:08
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rotate knob
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RotaryKnobView.kt
private fun setKnobPosition(angle: Float) {
val matrix = Matrix()
knobImageView.scaleType = ScaleType.MATRIX
matrix.postRotate(angle, width.toFloat() / 2, height.toFloat() / 2)
knobImageView.imageMatrix = matrix
}
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