Hey, I am producing an OpenGL application on netbeans and am having an issue rendering a graphic at the appropriate coordinates when triggered by a MotionEvent.ACTION_DOWN
The first bit of code is from my main project that would gather the coordinates when someone touches the screen:
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_MOVE:
//renderer.move(event.getX() - touchStart.x, touchStart.y - event.getY());
//touchStart.set(event.getX(), event.getY());
glSurfaceView.requestRender();
return true;
case MotionEvent.ACTION_DOWN:
//touchStart.set(event.getX(), event.getY());
//renderer.move(event.getX() - touchStart.x, touchStart.y - event.getY());
//renderer.move(touchStart.x, touchStart.y);
renderer.move(event.getX(), event.getY());
glSurfaceView.requestRender();
Log.d(“ActionDown”, “offset=[” + event.getX() + “, " + event.getY() + “]”);
//new AlertDialog.Builder(this).setTitle(“Alert”).setMessage(“x=” + event.getX() + " y=” + event.getY() + " .").setNeutralButton(“Close”, null).show();
//touchStart.set(event.getX(), event.getY());
return true;
default:
return super.onTouchEvent(event);
}
}
renderer.move is called with parameters x and y, and after testing I find that these values remain constant while passing through functions. The move command is as follows:
public void move(float xDelta, float yDelta) {
offset.x = xDelta;
offset.y = yDelta;
Log.d(“TriangleRenderer”, “offset=[” + offset.x + ", " + offset.y + “]”);
}
}
and the translation happens when the scene is drawn:
public void onDrawFrame(GL10 gl) {
gl.glPushMatrix();
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
gl.glTranslatef(offset.x, offset.y, 0);
gl.glColor4f(1.0f, 0.3f, 0.0f, .5f);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glVertexPointer(3, GL10.GL_SHORT, 0, triangleBuffer);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 3);
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
gl.glPopMatrix();
}
Am I missing something fundamental here? If there is anything else you need to help diagnose the issue please do not hesitate to ask! Thanks!
No double posting: http://hub.jmonkeyengine.org/groups/graphics/forum/topic/hey-i-am-producing-an-opengl-application-on-netbeans-and-am-having-an-issue-rendering-a-graphic-at-the-appropriate-coordinates-when-triggered-by-a-motionevent-action_down-the-first-bit-of-code-is-fr/
Again, this is not the right site for you, this site is about the jMonkeyEngine.