| /* |
| * 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) } |