1 files changed, 257 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/wallpapers/photophase/transitions/FlipTransition.java b/src/org/cyanogenmod/wallpapers/photophase/transitions/FlipTransition.java
new file mode 100644
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+++ b/src/org/cyanogenmod/wallpapers/photophase/transitions/FlipTransition.java
@@ -0,0 +1,257 @@
+/*
+ * 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;
+
+/**
+ * A transition that applies a translation transition to the picture.
+ */
+public class FlipTransition extends Transition {
+
+    /**
+     * The enumeration of all possibles translations movements
+     */
+    public enum FLIP_MODES {
+        /**
+         * Flip the picture horizontally
+         */
+        HORIZONTAL,
+        /**
+         * Flip the picture vertically
+         */
+        VERTICAL
+    }
+
+    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 FLIP_MODES mMode;
+
+    private float[] mTranslationMatrix;
+
+    private boolean mRunning;
+    private long mTime;
+
+    /**
+     * Constructor of <code>FlipTransition</code>
+     *
+     * @param ctx The current context
+     * @param tm The texture manager
+     */
+    public FlipTransition(Context ctx, TextureManager tm) {
+        super(ctx, tm, VERTEX_SHADER, FRAGMENT_SHADER);
+
+        // Initialized
+        mTranslationMatrix = new float[16];
+        reset();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public TRANSITIONS getType() {
+        return TRANSITIONS.FLIP;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean hasTransitionTarget() {
+        return true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean isRunning() {
+        return mRunning;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void select(PhotoFrame target) {
+        super.select(target);
+
+        // Random mode
+        FLIP_MODES[] modes = FLIP_MODES.values();
+        int low = 0;
+        int high = modes.length - 1;
+        mMode = modes[Utils.getNextRandom(low, high)];
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean isSelectable(PhotoFrame frame) {
+        return true;
+    }
+
+    /**
+     * {@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
+        applyTransition(delta, matrix, delta <= 0.5 ? mTarget : mTransitionTarget);
+
+        // Transition ending
+        if (delta == 1) {
+            mRunning = false;
+        }
+    }
+
+    /**
+     * Apply the transition
+     *
+     * @param delta The delta time
+     * @param matrix The model-view-projection matrix
+     * @param target The photo frame target
+     */
+    private void applyTransition(float delta, float[] matrix, PhotoFrame target) {
+        // Retrieve the index of the structures
+        int index = delta <= 0.5f ? 0 : 1;
+
+        // Bind default FBO
+        GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
+        GLESUtil.glesCheckError("glBindFramebuffer");
+
+        // Set the program
+        useProgram(index);
+
+        // Disable blending
+        GLES20.glDisable(GLES20.GL_BLEND);
+        GLESUtil.glesCheckError("glDisable");
+
+        // Set the input texture
+        int textureHandle = target.getTextureHandle();
+        GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
+        GLESUtil.glesCheckError("glActiveTexture");
+        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle);
+        GLESUtil.glesCheckError("glBindTexture");
+        GLES20.glUniform1i(mTextureHandlers[index], 0);
+        GLESUtil.glesCheckError("glBindTexture");
+
+        // Texture
+        FloatBuffer textureBuffer = target.getTextureBuffer();
+        textureBuffer.position(0);
+        GLES20.glVertexAttribPointer(mTextureCoordHandlers[index], 2, GLES20.GL_FLOAT, false, 0, textureBuffer);
+        GLESUtil.glesCheckError("glVertexAttribPointer");
+        GLES20.glEnableVertexAttribArray(mTextureCoordHandlers[index]);
+        GLESUtil.glesCheckError("glEnableVertexAttribArray");
+
+        // Position
+        FloatBuffer positionBuffer = target.getPositionBuffer();
+        positionBuffer.position(0);
+        GLES20.glVertexAttribPointer(mPositionHandlers[index], 2, GLES20.GL_FLOAT, false, 0, positionBuffer);
+        GLESUtil.glesCheckError("glVertexAttribPointer");
+        GLES20.glEnableVertexAttribArray(mPositionHandlers[index]);
+        GLESUtil.glesCheckError("glEnableVertexAttribArray");
+
+        // Calculate the delta angle and the translation and rotate parameters
+        float angle = (delta * 90) / 0.5f;
+        if (index == 1) {
+            angle = 90 - ((delta - 0.5f) * 90) / 0.5f;
+        }
+        float translateX = 0.0f;
+        float translateY = 0.0f;
+        float rotateX = 0.0f;
+        float rotateY = 0.0f;
+        switch (mMode) {
+            case HORIZONTAL:
+                rotateY = -1.0f;
+                translateX = (mTarget.getFrameVertex()[2] - ((mTarget.getFrameVertex()[2] - mTarget.getFrameVertex()[0]) / 2)) * -1;
+                break;
+            case VERTICAL:
+                rotateX = -1.0f;
+                translateY = (mTarget.getFrameVertex()[5] - ((mTarget.getFrameVertex()[5] - mTarget.getFrameVertex()[1]) / 2)) * -1;
+                break;
+
+            default:
+                break;
+        }
+
+        // Apply the projection and view transformation
+        Matrix.setIdentityM(matrix, 0);
+        Matrix.translateM(mTranslationMatrix, 0, matrix, 0, -translateX, -translateY, 0.0f);
+        Matrix.rotateM(mTranslationMatrix, 0, mTranslationMatrix, 0, angle, rotateX, rotateY, 0.0f);
+        Matrix.translateM(mTranslationMatrix, 0, mTranslationMatrix, 0, translateX, translateY, 0.0f);
+        GLES20.glUniformMatrix4fv(mMVPMatrixHandlers[index], 1, false, mTranslationMatrix, 0);
+        GLESUtil.glesCheckError("glUniformMatrix4fv");
+
+        // Draw
+        GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
+        GLESUtil.glesCheckError("glDrawElements");
+
+        // Disable attributes
+        GLES20.glDisableVertexAttribArray(mPositionHandlers[index]);
+        GLESUtil.glesCheckError("glDisableVertexAttribArray");
+        GLES20.glDisableVertexAttribArray(mTextureCoordHandlers[index]);
+        GLESUtil.glesCheckError("glDisableVertexAttribArray");
+    }
+
+}