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2014/10/16 ¤W¤È 08:21:40
android Programming Glossary: pyHow do I apply a force to a body in the direction it is traveling (Box2D)? http://stackoverflow.com/questions/11257462/how-do-i-apply-a-force-to-a-body-in-the-direction-it-is-traveling-box2d Sprite Body body public Ball final float pX final float pY final ITextureRegion pTextureRegion final VertexBufferObjectManager.. pVertexBufferObjectManager super pX pY pTextureRegion pVertexBufferObjectManager body PhysicsFactory.createCircleBody..
Polygon Touch detection Google Map API V2 http://stackoverflow.com/questions/14405593/polygon-touch-detection-google-map-api-v2 double aX vertA.longitude double bX vertB.longitude double pY tap.latitude double pX tap.longitude if aY bY aX vertB.longitude.. bY bX bX if pX 0 pX 360 if aX 0 aX 360 if bX 0 bX 360 if pY aY pY bY pY 0.00000001 if pY bY pY aY pX Math.max aX bX return.. bX if pX 0 pX 360 if aX 0 aX 360 if bX 0 bX 360 if pY aY pY bY pY 0.00000001 if pY bY pY aY pX Math.max aX bX return false..
http://stackoverflow.com/questions/1016896/how-to-get-screen-dimensions height and then set position int px screenWidth m int py screenWidth n Does anyone know how to get screenWidth and screenHeight..
Canvas Pinch-Zoom to Point Within Bounds http://stackoverflow.com/questions/11339190/canvas-pinch-zoom-to-point-within-bounds scroll forever. However when I use the .scale sx sy px py method it pushes things beyond any bounds I set in .translate..
Rotating an image around a specified point doesn't work! (Android) http://stackoverflow.com/questions/16938875/rotating-an-image-around-a-specified-point-doesnt-work-android an ImageView with postRotate float degrees float px float py setting px and py to a few differnt values including 0 0 and.. postRotate float degrees float px float py setting px and py to a few differnt values including 0 0 and imgView.getHeight..
How can you display upside down text with a textview in Android? http://stackoverflow.com/questions/2558257/how-can-you-display-upside-down-text-with-a-textview-in-android it rotates around the origin and that's bad. float py this.getHeight 2.0f float px this.getWidth 2.0f canvas.rotate.. 2.0f float px this.getWidth 2.0f canvas.rotate 180 px py draw the text with the matrix applied. super.onDraw canvas restore..
Get Canvas coordinates after scaling up/down or dragging in android http://stackoverflow.com/questions/7524843/get-canvas-coordinates-after-scaling-up-down-or-dragging-in-android by myself. Draw everything by applying this formula to px py coordinates float px ev.getX mScaleFactor rect.left float py.. coordinates float px ev.getX mScaleFactor rect.left float py ev.getY mScaleFactor rect.top rect canvas.getClipBounds Get..
How do I apply a force to a body in the direction it is traveling (Box2D)? http://stackoverflow.com/questions/11257462/how-do-i-apply-a-force-to-a-body-in-the-direction-it-is-traveling-box2d trig I finally came up with private static class Ball extends Sprite Body body public Ball final float pX final float pY final ITextureRegion pTextureRegion final VertexBufferObjectManager pVertexBufferObjectManager super pX pY pTextureRegion.. final float pY final ITextureRegion pTextureRegion final VertexBufferObjectManager pVertexBufferObjectManager super pX pY pTextureRegion pVertexBufferObjectManager body PhysicsFactory.createCircleBody mPhysicsWorld this BodyType.DynamicBody PhysicsFactory.createFixtureDef..
Polygon Touch detection Google Map API V2 http://stackoverflow.com/questions/14405593/polygon-touch-detection-google-map-api-v2 vertB double aY vertA.latitude double bY vertB.latitude double aX vertA.longitude double bX vertB.longitude double pY tap.latitude double pX tap.longitude if aY bY aX vertB.longitude aY vertB.latitude bX vertA.longitude bX vertA.latitude.. System.out.println aY aY aX aX System.out.println bY bY bX bX if pX 0 pX 360 if aX 0 aX 360 if bX 0 bX 360 if pY aY pY bY pY 0.00000001 if pY bY pY aY pX Math.max aX bX return false if pX Math.min aX bX return true double m aX bX bY.. System.out.println aY aY aX aX System.out.println bY bY bX bX if pX 0 pX 360 if aX 0 aX 360 if bX 0 bX 360 if pY aY pY bY pY 0.00000001 if pY bY pY aY pX Math.max aX bX return false if pX Math.min aX bX return true double m aX bX bY aY bX..
http://stackoverflow.com/questions/1016896/how-to-get-screen-dimensions right edge therefore I need to get the screen width and screen height and then set position int px screenWidth m int py screenWidth n Does anyone know how to get screenWidth and screenHeight in the main Activity android android layout layout..
Canvas Pinch-Zoom to Point Within Bounds http://stackoverflow.com/questions/11339190/canvas-pinch-zoom-to-point-within-bounds Additionally this canvas must be bounded so the user cannot scroll forever. However when I use the .scale sx sy px py method it pushes things beyond any bounds I set in .translate . I'm... pretty much open to anything at this point. I know..
Rotating an image around a specified point doesn't work! (Android) http://stackoverflow.com/questions/16938875/rotating-an-image-around-a-specified-point-doesnt-work-android around a specified point doesn't work Android I'm rotating an ImageView with postRotate float degrees float px float py setting px and py to a few differnt values including 0 0 and imgView.getHeight imgView.getWidth but it refuses to rotate.. point doesn't work Android I'm rotating an ImageView with postRotate float degrees float px float py setting px and py to a few differnt values including 0 0 and imgView.getHeight imgView.getWidth but it refuses to rotate around any other..
How can you display upside down text with a textview in Android? http://stackoverflow.com/questions/2558257/how-can-you-display-upside-down-text-with-a-textview-in-android matrix We need to rotate around the center of our text Otherwise it rotates around the origin and that's bad. float py this.getHeight 2.0f float px this.getWidth 2.0f canvas.rotate 180 px py draw the text with the matrix applied. super.onDraw.. around the origin and that's bad. float py this.getHeight 2.0f float px this.getWidth 2.0f canvas.rotate 180 px py draw the text with the matrix applied. super.onDraw canvas restore the old matrix. canvas.restore And this is my XML layout..
Get Canvas coordinates after scaling up/down or dragging in android http://stackoverflow.com/questions/7524843/get-canvas-coordinates-after-scaling-up-down-or-dragging-in-android ontouchevent share improve this question Done it finally by myself. Draw everything by applying this formula to px py coordinates float px ev.getX mScaleFactor rect.left float py ev.getY mScaleFactor rect.top rect canvas.getClipBounds Get.. by myself. Draw everything by applying this formula to px py coordinates float px ev.getX mScaleFactor rect.left float py ev.getY mScaleFactor rect.top rect canvas.getClipBounds Get them in on Draw function and apply above formula before drawing..
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