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2014/10/16 ¤W¤È 08:23:32
android Programming Glossary: screenwAndroid OpenGL ES 2.0 screen coordinates to world coordinates http://stackoverflow.com/questions/10985487/android-opengl-es-2-0-screen-coordinates-to-world-coordinates 240 @param cam camera object with x y z of the camera and screenWidth and screenHeight of the device. @return position in WCS... worldPos new Vec2 SCREEN height width ej 320 x 480 float screenW cam.GetScreenWidth float screenH cam.GetScreenHeight Auxiliary.. space in ogl 1 1 normalizedInPoint 0 float touch.X 2.0f screenW 1.0 normalizedInPoint 1 float oglTouchY 2.0f screenH 1.0 normalizedInPoint..
How to draw a path on an Android canvas with animation? http://stackoverflow.com/questions/12037709/how-to-draw-a-path-on-an-android-canvas-with-animation extends View private static Paint paint private int screenW screenH private float X Y private Path path private float initialScreenW.. int h int oldw int oldh super.onSizeChanged w h oldw oldh screenW w screenH h X 0 Y screenH 2 screenH 4 screenH 10 initialScreenW.. h X 0 Y screenH 2 screenH 4 screenH 10 initialScreenW screenW initialX screenW 2 screenW 4 plusX screenW 24 path.moveTo X..
How can I use the animation framework inside the canvas? http://stackoverflow.com/questions/4938822/how-can-i-use-the-animation-framework-inside-the-canvas new BallBounce this class BallBounce extends View int screenW int screenH int X int Y int initialY int ballW int ballH int.. int h int oldw int oldh super.onSizeChanged w h oldw oldh screenW w screenH h bgr Bitmap.createScaledBitmap bgr w h true Resize.. bgr w h true Resize background to fit the screen. X int screenW 2 ballW 2 Centre ball into the centre of the screen. Y initialY..
Android OpenGL ES 2.0 screen coordinates to world coordinates http://stackoverflow.com/questions/10985487/android-opengl-es-2-0-screen-coordinates-to-world-coordinates screen touch the actual position on physical screen ej 160 240 @param cam camera object with x y z of the camera and screenWidth and screenHeight of the device. @return position in WCS. public Vec2 GetWorldCoords Vec2 touch Camera cam Initialize.. Vec2 touch Camera cam Initialize auxiliary variables. Vec2 worldPos new Vec2 SCREEN height width ej 320 x 480 float screenW cam.GetScreenWidth float screenH cam.GetScreenHeight Auxiliary matrix and vectors to deal with ogl. float invertedMatrix.. int screenH touch.Y Transform the screen point to clip space in ogl 1 1 normalizedInPoint 0 float touch.X 2.0f screenW 1.0 normalizedInPoint 1 float oglTouchY 2.0f screenH 1.0 normalizedInPoint 2 1.0f normalizedInPoint 3 1.0f Obtain the transform..
How to draw a path on an Android canvas with animation? http://stackoverflow.com/questions/12037709/how-to-draw-a-path-on-an-android-canvas-with-animation new HeartbeatView this public static class HeartbeatView extends View private static Paint paint private int screenW screenH private float X Y private Path path private float initialScreenW private float initialX plusX private float TX private.. false flash 0 @Override public void onSizeChanged int w int h int oldw int oldh super.onSizeChanged w h oldw oldh screenW w screenH h X 0 Y screenH 2 screenH 4 screenH 10 initialScreenW screenW initialX screenW 2 screenW 4 plusX screenW 24 path.moveTo.. int oldh super.onSizeChanged w h oldw oldh screenW w screenH h X 0 Y screenH 2 screenH 4 screenH 10 initialScreenW screenW initialX screenW 2 screenW 4 plusX screenW 24 path.moveTo X Y @Override public void onDraw Canvas canvas super.onDraw..
How can I use the animation framework inside the canvas? http://stackoverflow.com/questions/4938822/how-can-i-use-the-animation-framework-inside-the-canvas super.onCreate savedInstanceState setContentView new BallBounce this class BallBounce extends View int screenW int screenH int X int Y int initialY int ballW int ballH int angle float dY float acc Bitmap ball bgr public BallBounce.. rotation angle. @Override public void onSizeChanged int w int h int oldw int oldh super.onSizeChanged w h oldw oldh screenW w screenH h bgr Bitmap.createScaledBitmap bgr w h true Resize background to fit the screen. X int screenW 2 ballW 2 Centre.. h oldw oldh screenW w screenH h bgr Bitmap.createScaledBitmap bgr w h true Resize background to fit the screen. X int screenW 2 ballW 2 Centre ball into the centre of the screen. Y initialY @Override public void onDraw Canvas canvas super.onDraw..
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