在我的 android 应用程序中。我想使用 android-gpuimage 库制作图像矫直编辑功能,但 GPUImageView 没有提供功能,getBitmap()
或者setMatrix()
怎么可能请告诉我?这是要查看的代码:
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if(isStraightenEffectEnabled){
float angle = (progress - 45);
float width = mGPUImageView.getWidth();
float height = mGPUImageView.getHeight();
if (width > height) {
width = mGPUImageView.getHeight();
height = mGPUImageView.getWidth();
}
float a = (float) Math.atan(height/width);
// the length from the center to the corner of the green
float len1 = (width / 2) / (float) Math.cos(a - Math.abs(Math.toRadians(angle)));
// the length from the center to the corner of the black
float len2 = (float) Math.sqrt(Math.pow(width/2,2) + Math.pow(height/2,2));
// compute the scaling factor
float scale = len2 / len1;
Matrix matrix = mGPUImageView.getMatrix();
if (mMatrix == null) {
mMatrix = new Matrix(matrix);
}
matrix = new Matrix(mMatrix);
float newX = (mGPUImageView.getWidth() / 2) * (1 - scale);
float newY = (mGPUImageView.getHeight() / 2) * (1 - scale);
matrix.postScale(scale, scale);
matrix.postTranslate(newX, newY);
matrix.postRotate(angle, mGPUImageView.getWidth() / 2, mGPUImageView.getHeight() / 2);
是否可以获得 mGPUImageView.setMatrix(matrix);
NOW HEREgetMatrix()
是一种方法,GPUImageView
但setMatrix()
或getBitmap()
不是GPUImageView
类可用的方法。如果可能的话,有什么解决方法吗?