212 lines
7.1 KiB
Java
212 lines
7.1 KiB
Java
/*
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* Copyright (C) 2021 pedroSG94.
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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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package com.pedro.encoder.input.gl.render.filters.object;
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import android.content.Context;
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import android.graphics.PointF;
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import android.graphics.SurfaceTexture;
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import android.opengl.GLES11Ext;
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import android.opengl.GLES20;
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import android.opengl.Matrix;
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import android.os.Build;
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import androidx.annotation.RequiresApi;
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import android.os.Handler;
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import android.os.Looper;
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import android.view.Surface;
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import com.pedro.encoder.R;
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import com.pedro.encoder.input.gl.Sprite;
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import com.pedro.encoder.utils.gl.GlUtil;
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import com.pedro.encoder.utils.gl.TranslateTo;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.FloatBuffer;
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/**
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* Created by pedro on 18/07/18.
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*/
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@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2)
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public class SurfaceFilterRender extends BaseObjectFilterRender {
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public interface SurfaceReadyCallback {
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void surfaceReady(SurfaceTexture surfaceTexture);
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}
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//rotation matrix
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private final float[] squareVertexDataFilter = {
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// X, Y, Z, U, V
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-1f, -1f, 0f, 0f, 0f, //bottom left
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1f, -1f, 0f, 1f, 0f, //bottom right
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-1f, 1f, 0f, 0f, 1f, //top left
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1f, 1f, 0f, 1f, 1f, //top right
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};
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private int program = -1;
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private int aPositionHandle = -1;
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private int aTextureHandle = -1;
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private int uMVPMatrixHandle = -1;
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private int uSTMatrixHandle = -1;
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private int uSamplerHandle = -1;
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private int uSamplerSurfaceHandle = -1;
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private int aTextureObjectHandle = -1;
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private int uAlphaHandle = -1;
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private int[] surfaceId = new int[] { -1 };
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private Sprite sprite;
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private FloatBuffer squareVertexSurface;
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private SurfaceTexture surfaceTexture;
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private Surface surface;
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private float alpha = 1f;
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private SurfaceReadyCallback surfaceReadyCallback;
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public SurfaceFilterRender() {
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this(null);
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}
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public SurfaceFilterRender(SurfaceReadyCallback surfaceReadyCallback) {
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this.surfaceReadyCallback = surfaceReadyCallback;
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squareVertex = ByteBuffer.allocateDirect(squareVertexDataFilter.length * FLOAT_SIZE_BYTES)
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.order(ByteOrder.nativeOrder())
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.asFloatBuffer();
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squareVertex.put(squareVertexDataFilter).position(0);
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sprite = new Sprite();
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float[] vertices = sprite.getTransformedVertices();
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squareVertexSurface = ByteBuffer.allocateDirect(vertices.length * FLOAT_SIZE_BYTES)
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.order(ByteOrder.nativeOrder())
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.asFloatBuffer();
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squareVertexSurface.put(vertices).position(0);
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sprite.getTransformedVertices();
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Matrix.setIdentityM(MVPMatrix, 0);
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Matrix.setIdentityM(STMatrix, 0);
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}
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@Override
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protected void initGlFilter(Context context) {
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String vertexShader = GlUtil.getStringFromRaw(context, R.raw.object_vertex);
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String fragmentShader = GlUtil.getStringFromRaw(context, R.raw.surface_fragment);
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program = GlUtil.createProgram(vertexShader, fragmentShader);
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aPositionHandle = GLES20.glGetAttribLocation(program, "aPosition");
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aTextureHandle = GLES20.glGetAttribLocation(program, "aTextureCoord");
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aTextureObjectHandle = GLES20.glGetAttribLocation(program, "aTextureObjectCoord");
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uMVPMatrixHandle = GLES20.glGetUniformLocation(program, "uMVPMatrix");
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uSTMatrixHandle = GLES20.glGetUniformLocation(program, "uSTMatrix");
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uSamplerHandle = GLES20.glGetUniformLocation(program, "uSampler");
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uSamplerSurfaceHandle = GLES20.glGetUniformLocation(program, "uSamplerSurface");
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uAlphaHandle = GLES20.glGetUniformLocation(program, "uAlpha");
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GlUtil.createExternalTextures(surfaceId.length, surfaceId, 0);
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surfaceTexture = new SurfaceTexture(surfaceId[0]);
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surfaceTexture.setDefaultBufferSize(getWidth(), getHeight());
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surface = new Surface(surfaceTexture);
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if (surfaceReadyCallback != null) {
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new Handler(Looper.getMainLooper()).post(new Runnable() {
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@Override
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public void run() {
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surfaceReadyCallback.surfaceReady(surfaceTexture);
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}
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});
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}
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}
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@Override
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protected void drawFilter() {
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surfaceTexture.updateTexImage();
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GLES20.glUseProgram(program);
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squareVertex.position(SQUARE_VERTEX_DATA_POS_OFFSET);
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GLES20.glVertexAttribPointer(aPositionHandle, 3, GLES20.GL_FLOAT, false,
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SQUARE_VERTEX_DATA_STRIDE_BYTES, squareVertex);
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GLES20.glEnableVertexAttribArray(aPositionHandle);
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squareVertex.position(SQUARE_VERTEX_DATA_UV_OFFSET);
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GLES20.glVertexAttribPointer(aTextureHandle, 2, GLES20.GL_FLOAT, false,
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SQUARE_VERTEX_DATA_STRIDE_BYTES, squareVertex);
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GLES20.glEnableVertexAttribArray(aTextureHandle);
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squareVertexSurface.position(SQUARE_VERTEX_DATA_POS_OFFSET);
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GLES20.glVertexAttribPointer(aTextureObjectHandle, 2, GLES20.GL_FLOAT, false,
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2 * FLOAT_SIZE_BYTES, squareVertexSurface);
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GLES20.glEnableVertexAttribArray(aTextureObjectHandle);
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GLES20.glUniformMatrix4fv(uMVPMatrixHandle, 1, false, MVPMatrix, 0);
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GLES20.glUniformMatrix4fv(uSTMatrixHandle, 1, false, STMatrix, 0);
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GLES20.glUniform1i(uSamplerHandle, 4);
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GLES20.glActiveTexture(GLES20.GL_TEXTURE4);
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GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, previousTexId);
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//Surface
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GLES20.glUniform1i(uSamplerSurfaceHandle, 5);
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GLES20.glActiveTexture(GLES20.GL_TEXTURE5);
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GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, surfaceId[0]);
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//Set alpha. 0f if no image loaded.
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GLES20.glUniform1f(uAlphaHandle, surfaceId[0] == -1 ? 0f : alpha);
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}
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@Override
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public void release() {
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if (surfaceId != null) GLES20.glDeleteTextures(1, surfaceId, 0);
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surfaceId = new int[] { -1 };
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surfaceTexture.release();
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surface.release();
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}
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/**
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* This texture must be renderer using an api called on main thread to avoid possible errors
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*/
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public SurfaceTexture getSurfaceTexture() {
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return surfaceTexture;
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}
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/**
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* This surface must be renderer using an api called on main thread to avoid possible errors
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*/
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public Surface getSurface() {
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return surface;
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}
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public void setAlpha(float alpha) {
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this.alpha = alpha;
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}
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public void setScale(float scaleX, float scaleY) {
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sprite.scale(scaleX, scaleY);
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squareVertexSurface.put(sprite.getTransformedVertices()).position(0);
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}
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public void setPosition(float x, float y) {
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sprite.translate(x, y);
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squareVertexSurface.put(sprite.getTransformedVertices()).position(0);
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}
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public void setPosition(TranslateTo positionTo) {
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sprite.translate(positionTo);
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squareVertexSurface.put(sprite.getTransformedVertices()).position(0);
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}
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public PointF getScale() {
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return sprite.getScale();
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}
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public PointF getPosition() {
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return sprite.getTranslation();
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}
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}
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