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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
@file:Suppress("NOTHING_TO_INLINE")
package androidx.core.graphics
import android.graphics.Matrix
/**
* Multiplies this [Matrix] by another matrix and returns the result as
* a new matrix.
*/
inline operator fun Matrix.times(m: Matrix) = Matrix(this).apply { preConcat(m) }
/**
* Returns the 9 values of this [Matrix] as a new array of floats.
*/
inline fun Matrix.values() = FloatArray(9).apply { getValues(this) }
/**
* Creates a translation matrix with the translation amounts [tx] and [ty]
* respectively on the `x` and `y` axis.
*/
fun translationMatrix(tx: Float = 0.0f, ty: Float = 0.0f) = Matrix().apply { setTranslate(tx, ty) }
/**
* Creates a scale matrix with the scale factor [sx] and [sy] respectively on the
* `x` and `y` axis.
*/
fun scaleMatrix(sx: Float = 1.0f, sy: Float = 1.0f) = Matrix().apply { setScale(sx, sy) }
/**
* Creates a rotation matrix, defined by a rotation angle in degrees around the pivot
* point located at the coordinates ([px], [py]).
*/
fun rotationMatrix(degrees: Float, px: Float = 0.0f, py: Float = 0.0f) =
Matrix().apply { setRotate(degrees, px, py) }