50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/*
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* Copyright 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_GRAPHICS_MATRIX_H
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#define ANDROID_GRAPHICS_MATRIX_H
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#include <jni.h>
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#include <cutils/compiler.h>
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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/**
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* Returns an array of floats that represents the 3x3 matrix of the java object.
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* @param values The 9 values of the 3x3 matrix in the following order.
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* values[0] = scaleX values[1] = skewX values[2] = transX
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* values[3] = skewY values[4] = scaleY values[5] = transY
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* values[6] = persp0 values[7] = persp1 values[8] = persp2
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* @return true if the values param was populated and false otherwise.
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*/
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ANDROID_API bool AMatrix_getContents(JNIEnv* env, jobject matrixObj, float values[9]);
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/**
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* Returns a new Matrix jobject that contains the values passed in as initial values.
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* @param values The 9 values of the 3x3 matrix in the following order.
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* values[0] = scaleX values[1] = skewX values[2] = transX
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* values[3] = skewY values[4] = scaleY values[5] = transY
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* values[6] = persp0 values[7] = persp1 values[8] = persp2
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* @return The matrix jobject
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*/
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ANDROID_API jobject AMatrix_newInstance(JNIEnv* env, float values[9]);
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__END_DECLS
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#endif // ANDROID_GRAPHICS_MATRIX_H
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