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Diffstat (limited to 'src/org/cyanogenmod/wallpapers/photophase/transitions/TranslateTransition.java')
| -rw-r--r-- | src/org/cyanogenmod/wallpapers/photophase/transitions/TranslateTransition.java | 334 |
1 files changed, 334 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/wallpapers/photophase/transitions/TranslateTransition.java b/src/org/cyanogenmod/wallpapers/photophase/transitions/TranslateTransition.java new file mode 100644 index 0000000..eb1080b --- /dev/null +++ b/src/org/cyanogenmod/wallpapers/photophase/transitions/TranslateTransition.java @@ -0,0 +1,334 @@ +/* + * Copyright (C) 2013 The CyanogenMod 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 org.cyanogenmod.wallpapers.photophase.transitions; + +import android.content.Context; +import android.opengl.GLES20; +import android.opengl.GLException; +import android.opengl.Matrix; +import android.os.SystemClock; + +import org.cyanogenmod.wallpapers.photophase.utils.GLESUtil; +import org.cyanogenmod.wallpapers.photophase.utils.Utils; +import org.cyanogenmod.wallpapers.photophase.PhotoFrame; +import org.cyanogenmod.wallpapers.photophase.R; +import org.cyanogenmod.wallpapers.photophase.TextureManager; +import org.cyanogenmod.wallpapers.photophase.transitions.Transitions.TRANSITIONS; + +import java.nio.FloatBuffer; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; + +/** + * A transition that applies a translation transition to the picture. + */ +public class TranslateTransition extends Transition { + + /** + * The enumeration of all possibles translations movements + */ + public enum TRANSLATE_MODES { + /** + * Translate the picture from left to right + */ + LEFT_TO_RIGHT, + /** + * Translate the picture from right to left + */ + RIGHT_TO_LEFT, + /** + * Translate the picture from up to down + */ + UP_TO_DOWN, + /** + * Translate the picture from down to up + */ + DOWN_TO_UP + } + + private static final int[] VERTEX_SHADER = {R.raw.default_vertex_shader, R.raw.default_vertex_shader}; + private static final int[] FRAGMENT_SHADER = {R.raw.default_fragment_shader, R.raw.default_fragment_shader}; + + private static final float TRANSITION_TIME = 600.0f; + + private TRANSLATE_MODES mMode; + + private boolean mRunning; + private long mTime; + + /** + * Constructor of <code>TranslateTransition</code> + * + * @param ctx The current context + * @param tm The texture manager + */ + public TranslateTransition(Context ctx, TextureManager tm) { + super(ctx, tm, VERTEX_SHADER, FRAGMENT_SHADER); + + // Initialized + reset(); + } + + /** + * {@inheritDoc} + */ + @Override + public TRANSITIONS getType() { + return TRANSITIONS.TRANSLATION; + } + + /** + * {@inheritDoc} + */ + @Override + public boolean hasTransitionTarget() { + return true; + } + + /** + * {@inheritDoc} + */ + @Override + public boolean isRunning() { + return mRunning; + } + + /** + * {@inheritDoc} + */ + @Override + public void select(PhotoFrame target) { + super.select(target); + + // Discard all non-supported modes + List<TRANSLATE_MODES> modes = + new ArrayList<TranslateTransition.TRANSLATE_MODES>( + Arrays.asList(TRANSLATE_MODES.values())); + float[] vertex = target.getFrameVertex(); + if (vertex[4] != -1.0f) { + modes.remove(TRANSLATE_MODES.RIGHT_TO_LEFT); + } + if (vertex[6] != 1.0f) { + modes.remove(TRANSLATE_MODES.LEFT_TO_RIGHT); + } + if (vertex[5] != 1.0f) { + modes.remove(TRANSLATE_MODES.DOWN_TO_UP); + } + if (vertex[1] != -1.0f) { + modes.remove(TRANSLATE_MODES.UP_TO_DOWN); + } + + // Random mode + int low = 0; + int high = modes.size() - 1; + mMode = modes.get(Utils.getNextRandom(low, high)); + } + + /** + * {@inheritDoc} + */ + @Override + public boolean isSelectable(PhotoFrame frame) { + float[] vertex = frame.getFrameVertex(); + if (vertex[4] == -1.0f || vertex[6] == 1.0f || + vertex[5] == 1.0f || vertex[1] == -1.0f) { + return true; + } + return false; + } + + /** + * {@inheritDoc} + */ + @Override + public void reset() { + mTime = -1; + mRunning = true; + } + + /** + * {@inheritDoc} + */ + @Override + public void apply(float[] matrix) throws GLException { + // Check internal vars + if (mTarget == null || + mTarget.getPositionBuffer() == null || + mTarget.getTextureBuffer() == null) { + return; + } + if (mTransitionTarget == null || + mTransitionTarget.getPositionBuffer() == null || + mTransitionTarget.getTextureBuffer() == null) { + return; + } + + // Set the time the first time + if (mTime == -1) { + mTime = SystemClock.uptimeMillis(); + } + + // Calculate the delta time + final float delta = Math.min(SystemClock.uptimeMillis() - mTime, TRANSITION_TIME) / TRANSITION_TIME; + + // Apply the transition + applyTransitionToDst(delta, matrix); + if (delta < 1) { + applyTransitionToSrc(delta, matrix); + } + + // Transition ending + if (delta == 1) { + mRunning = false; + } + } + + /** + * Apply the transition to the source frame + * + * @param delta The delta time + * @param matrix The model-view-projection matrix + */ + private void applyTransitionToSrc(float delta, float[] matrix) { + // Bind default FBO + GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0); + GLESUtil.glesCheckError("glBindFramebuffer"); + + // Set the program + useProgram(0); + + // Disable blending + GLES20.glDisable(GLES20.GL_BLEND); + GLESUtil.glesCheckError("glDisable"); + + // Set the input texture + int textureHandle = mTarget.getTextureHandle(); + GLES20.glActiveTexture(GLES20.GL_TEXTURE0); + GLESUtil.glesCheckError("glActiveTexture"); + GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle); + GLESUtil.glesCheckError("glBindTexture"); + GLES20.glUniform1i(mTextureHandlers[0], 0); + GLESUtil.glesCheckError("glBindTexture"); + + // Texture + FloatBuffer textureBuffer = mTarget.getTextureBuffer(); + textureBuffer.position(0); + GLES20.glVertexAttribPointer(mTextureCoordHandlers[0], 2, GLES20.GL_FLOAT, false, 0, textureBuffer); + GLESUtil.glesCheckError("glVertexAttribPointer"); + GLES20.glEnableVertexAttribArray(mTextureCoordHandlers[0]); + GLESUtil.glesCheckError("glEnableVertexAttribArray"); + + // Position + FloatBuffer positionBuffer = mTarget.getPositionBuffer(); + positionBuffer.position(0); + GLES20.glVertexAttribPointer(mPositionHandlers[0], 2, GLES20.GL_FLOAT, false, 0, positionBuffer); + GLESUtil.glesCheckError("glVertexAttribPointer"); + GLES20.glEnableVertexAttribArray(mPositionHandlers[0]); + GLESUtil.glesCheckError("glEnableVertexAttribArray"); + + // Calculate the delta distance + float distance = + (mMode.compareTo(TRANSLATE_MODES.LEFT_TO_RIGHT) == 0 || mMode.compareTo(TRANSLATE_MODES.RIGHT_TO_LEFT) == 0) + ? mTarget.getFrameWidth() + : mTarget.getFrameHeight(); + if (mMode.compareTo(TRANSLATE_MODES.RIGHT_TO_LEFT) == 0 || mMode.compareTo(TRANSLATE_MODES.DOWN_TO_UP) == 0) { + distance *= -1; + } + distance *= delta; + boolean vertical = (mMode.compareTo(TRANSLATE_MODES.UP_TO_DOWN) == 0 || mMode.compareTo(TRANSLATE_MODES.DOWN_TO_UP) == 0); + + // Apply the projection and view transformation + float[] translationMatrix = new float[16]; + if (vertical) { + Matrix.translateM(translationMatrix, 0, matrix, 0, 0.0f, distance, 0.0f); + } else { + Matrix.translateM(translationMatrix, 0, matrix, 0, distance, 0.0f, 0.0f); + } + GLES20.glUniformMatrix4fv(mMVPMatrixHandlers[0], 1, false, translationMatrix, 0); + GLESUtil.glesCheckError("glUniformMatrix4fv"); + + // Draw + GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4); + GLESUtil.glesCheckError("glDrawElements"); + + // Disable attributes + GLES20.glDisableVertexAttribArray(mPositionHandlers[0]); + GLESUtil.glesCheckError("glDisableVertexAttribArray"); + GLES20.glDisableVertexAttribArray(mTextureCoordHandlers[0]); + GLESUtil.glesCheckError("glDisableVertexAttribArray"); + } + + /** + * Apply the transition to the destination frame + * + * @param delta The delta time + * @param matrix The model-view-projection matrix + */ + private void applyTransitionToDst(float delta, float[] matrix) { + // Bind default FBO + GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0); + GLESUtil.glesCheckError("glBindFramebuffer"); + + // Set the program + useProgram(1); + + // Disable blending + GLES20.glDisable(GLES20.GL_BLEND); + GLESUtil.glesCheckError("glDisable"); + + // Set the input texture + int textureHandle = mTransitionTarget.getTextureHandle(); + GLES20.glActiveTexture(GLES20.GL_TEXTURE0); + GLESUtil.glesCheckError("glActiveTexture"); + GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle); + GLESUtil.glesCheckError("glBindTexture"); + GLES20.glUniform1i(mTextureHandlers[1], 0); + GLESUtil.glesCheckError("glUniform1i"); + + // Texture + FloatBuffer textureBuffer = mTransitionTarget.getTextureBuffer(); + textureBuffer.position(0); + GLES20.glVertexAttribPointer(mTextureCoordHandlers[1], 2, GLES20.GL_FLOAT, false, 0, textureBuffer); + GLESUtil.glesCheckError("glVertexAttribPointer"); + GLES20.glEnableVertexAttribArray(mTextureCoordHandlers[1]); + GLESUtil.glesCheckError("glEnableVertexAttribArray"); + + // Position + FloatBuffer positionBuffer = mTransitionTarget.getPositionBuffer(); + positionBuffer.position(0); + GLES20.glVertexAttribPointer(mPositionHandlers[1], 2, GLES20.GL_FLOAT, false, 0, positionBuffer); + GLESUtil.glesCheckError("glVertexAttribPointer"); + GLES20.glEnableVertexAttribArray(mPositionHandlers[1]); + GLESUtil.glesCheckError("glEnableVertexAttribArray"); + + // Apply the projection and view transformation + GLES20.glUniformMatrix4fv(mMVPMatrixHandlers[1], 1, false, matrix, 0); + GLESUtil.glesCheckError("glUniformMatrix4fv"); + + // Draw + GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4); + GLESUtil.glesCheckError("glDrawElements"); + + // Disable attributes + GLES20.glDisableVertexAttribArray(mPositionHandlers[1]); + GLESUtil.glesCheckError("glDisableVertexAttribArray"); + GLES20.glDisableVertexAttribArray(mTextureCoordHandlers[1]); + GLESUtil.glesCheckError("glDisableVertexAttribArray"); + } + +} |