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/*
* Copyright (C) 2007 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.
*/
package com.example.android.apis.graphics.spritetext;
import javax.microedition.khronos.opengles.GL10;
class MatrixGrabber {
public MatrixGrabber() {
mModelView = new float[16];
mProjection = new float[16];
}
/**
* Record the current modelView and projection matrix state.
* Has the side effect of setting the current matrix state to GL_MODELVIEW
* @param gl
*/
public void getCurrentState(GL10 gl) {
getCurrentProjection(gl);
getCurrentModelView(gl);
}
/**
* Record the current modelView matrix state. Has the side effect of
* setting the current matrix state to GL_MODELVIEW
* @param gl
*/
public void getCurrentModelView(GL10 gl) {
getMatrix(gl, GL10.GL_MODELVIEW, mModelView);
}
/**
* Record the current projection matrix state. Has the side effect of
* setting the current matrix state to GL_PROJECTION
* @param gl
*/
public void getCurrentProjection(GL10 gl) {
getMatrix(gl, GL10.GL_PROJECTION, mProjection);
}
private void getMatrix(GL10 gl, int mode, float[] mat) {
MatrixTrackingGL gl2 = (MatrixTrackingGL) gl;
gl2.glMatrixMode(mode);
gl2.getMatrix(mat, 0);
}
public float[] mModelView;
public float[] mProjection;
}
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