I want to apply pinch zoom and panning effect on GLSurfaceView. It is Image editor, so It would not be 3D object. I tried to implement using these following links:
Want to apply pinch and zoom to GLSurfaceView(3d Object) http://www.learnopengles.com/android-lesson-one-getting-started/
These all are links for 3D object rendering. I can not use ImageView as I need to work out with OpenGL so, had to implement it on GLSurfaceView.
Suggest me or any reference links are there for such implementation. **I need it for 2D only.
I am able to do both now, but where I am getting problem is to set the pivot point while panning can any one help me to set the translation respective to pivot point?
Matrix.setIdentityM(mScaleMatrix, 0); Matrix.scaleM(mScaleMatrix, 0, scaleX, scaleY, 0); Matrix.multiplyMM(mMVPMatrix, 0, mViewMatrix, 0, mScaleMatrix, 0); Matrix.setIdentityM(mTranslateMatrix, 0); Matrix.translateM(mTranslateMatrix, 0, deltaX, deltaY, 0); Matrix.multiplyMM(mProjectionMatrix, 0, mProjectionMatrix, 0, mTranslateMatrix, 0); Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0);