android - 贺卡翻转动画

Question

我正在开发贺卡应用程序，我需要卡片翻转视图类型的视图。我已经添加了相同的图像。我经历过多个类似翻转视图的库，我发现android-flipview 更适合我的要求。我在这个库中进行了更改，使其像贺卡一样从左角翻转。我正在添加相同的代码和屏幕截图。

但是，它不像我需要的那样工作。

查看_Dual_card.java 文件，我做了如下更改：

public synchronized void buildTexture(FlipRenderer renderer, GL10 gl) {
        if (screenshot != null) {
            if (texture != null)
                texture.destroy(gl);
            texture = Texture.createTexture(screenshot, renderer, gl);
            recycleScreenshot();

            topCard.setTexture(texture);
            bottomCard.setTexture(texture);

            final float viewHeight = texture.getContentHeight();
            final float viewWidth = texture.getContentWidth();
            final float textureHeight = texture.getHeight();
            final float textureWidth = texture.getWidth();

            if (orientationVertical) {
                topCard.setCardVertices(new float[] { 0f, viewHeight, 0f, // top left
                        0f, viewHeight / 2.0f, 0f, // bottom left
                        viewWidth, viewHeight / 2f, 0f, // bottom right
                        viewWidth, viewHeight, 0f // top right
                });

                topCard.setTextureCoordinates(new float[] { 0f, 0f, 0f,
                        viewHeight / 2f / textureHeight,
                        viewWidth / textureWidth,
                        viewHeight / 2f / textureHeight,
                        viewWidth / textureWidth, 0f });

                bottomCard.setCardVertices(new float[] { 0f, viewHeight / 2f,
                        0f, // top left
                        0f, 0f, 0f, // bottom left
                        viewWidth, 0f, 0f, // bottom right
                        viewWidth, viewHeight / 2f, 0f // top right
                        });

                bottomCard.setTextureCoordinates(new float[] { 0f,
                        viewHeight / 2f / textureHeight, 0f,
                        viewHeight / textureHeight, viewWidth / textureWidth,
                        viewHeight / textureHeight, viewWidth / textureWidth,
                        viewHeight / 2f / textureHeight });
            } else {
                topCard.setCardVertices(new float[] { 0f, viewHeight, 0f, // top left
                        0f, 0f, 0f, // bottom left
                        viewWidth /27f, 0f, 0f, // bottom right
                        viewWidth /27f, viewHeight, 0f // top right
                });

                topCard.setTextureCoordinates(new float[] { 0f, 0f, 0f,
                        viewHeight / textureHeight,
                        viewWidth / 27f / textureWidth,
                        viewHeight / textureHeight,
                        viewWidth / 27f / textureWidth, 0f });

                bottomCard.setCardVertices(new float[] {0f,
                        viewHeight, 0f, // top left
                        0f, 0f, 0f, // bottom left
                        viewWidth, 0f, 0f, // bottom right
                        viewWidth, viewHeight, 0f // top right
                        });

                bottomCard.setTextureCoordinates(new float[] {
                        viewWidth /27f / textureWidth, 0f,
                        viewWidth /27f / textureWidth,
                        viewHeight / textureHeight, viewWidth / textureWidth,
                        viewHeight / textureHeight, viewWidth / textureWidth,
                        0f });
            }

            checkError(gl);
        }
    }

我想要的是：

在此处输入图像描述