Hi All, I have a very simple question. I am trying to rotate a vector around a certain point on the vector(in C++): 1 2 3 4 5 6 7 8 9 rotated around the point (1,1) (which is the "5") 90 degrees would result in: 7 4 1 8 5 2 9 6 3 Right now I am using: x = (x * cos(90)) - (y * sin(90)) y =(y * cos(90)) + (x * sin(90)) But I do...
Hi, I have an MFC appplication where the user have to move the mouse around a circle circonference with a dragging mouvement. I need to retrieve the number of degrees during this mouse drag "rotation" and I need to know if it's clockwise or counterclockwise. At first, to determine the rotation direction, I was comparing x-coordinnate be...
I am writing a program (.net) to create a stadium style layout and need to determine the angle of rotation for each polygon compared to the horizontal. This is so i can construct the contents of the polygon and also rotate this correctly to fit inside. Given the below image as an example to simulate each variant of the facing direction...
can anyone tell me how to make my model rotate at its own center go gravity in stead of the default (0,0,0) axis? and my rotation seems to be only going left and right not 360 degree.. ...
I'm drawing a flat disk using gluDisk() in my scene. gluDisk() draws the disk facing the positive Z axis but I want it to be facing some arbitrary normal I have. Clearly I need to use glRotate() to get the disk facing properly but what should be the rotation? I remember this can be calculated using Quaternions but I can't seem to remembe...
How do I generate a transformation matrix for rotating points/others by the angle between two lines/vectors/directions in CGAL? 2D is what I need. 3D is what I love. ...
I am attempting to rotate some text within a label. I have a cusom label which allows me to have control over the text rendering process. protected override void OnPaint ( PaintEventArgs pe ) { Graphics g = pe.Graphics; g.RotateTransform( angle ); g.drawString( text ); g.ResetTransform(); } The problem I am having i...
Does anyone know of a good commercial or open source solution for pulling and rotating application logs from a bunch of disparate servers to a central server where you can catalog them by year/month/date/hour etc... this needs to be something that will work on windows. ...
In Javascript we often render graphics by rotating and translating the coordinate plane before sending things ctx.save(); ctx.translate(someX, someY); ctx.rotate(someAngle * Math.PI / 180); ctx.beginPath(); ctx.moveTo(x1, y1); // What's the actual (x1,y1)? ctx.lineTo(x2, y2); // What's the actual (x2,y2)? ctx.stroke(); ctx.resto...
I am attemting to transition from one UIView to another, when the user rotates the device. This, in of itself, is not difficult. However, since I am displaying completely different content after the rotation, the default animation provided by UIKit (rotating the currently displayed view) is inappropriate conceptually. Simply disabling t...
I was using UIImagePickerController without any problem. Before when I was taking a picture in the landscape mode, the picture in the Preview (when the buttons Retake and Use Photo were present) was always automatically rotated so as to appear correctly in the portrait mode. But now when I use the UIImagePickerController the preview mo...
Hello, I want to wobble an image back and forth in my application similar to how the iPhone icons wobble when you press down on it. What's the best way to do that? This is my first foray into animations that's not using an animated GIF. I think the idea is to slightly rotate the image back and forth to create the wobbling effect. ...
Hi, We have a air/flex app that we want to add an effect to. Basically we want to rotate the whole window when a particular button is clicked. Similar to say how, the clock widget behaves in mac os dashboard when you click the 'i' button, the whole widget rotates. I'm wondering if this sort of thing is possible in air/flex 3? Thanks ...
HI, Is there a way by which I can rotate an image inside a div clockwise or anticlockwise. I have a main fixed width div[overflow set to hidden] with images loaded from database. There is a scroll bar for showing the images inside the div. When image is clicked then I need to show the rotating animation either in clockwise or anticlockw...
I have a UIViewController that returns YES in shouldAutorotateToInterfaceOrientation: for UIDeviceOrientationPortrait and NO for everything else. With that view on the top of the stack, I use pushViewController:animated: to push a new UIViewController. The new controller returns YES for anything in shouldAutorotateToInterfaceOrientation:...
I have been tasked with creating a OpenGL scene implementing ideas such as simple movement, and an Arcball interface. The problem I am having is dealing with the rotation matrix which NeHe's Arcball class (http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=48) computes. What I have so far is a very simple solar system (just the ear...
Hi, I'm trying to obtain the camera rotation on various axis in OpenGL (but using Java, LWJGL, and jME specifically). The camera object allows me to get the direction as a Vector3f, but this doesn't seem to work to get the componentised rotation; each axis appears tied to another axis. I found that toAngleAxis with the angle component wi...
Anyone know how to do this? I thought this: -(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return YES; } - (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration { } - (void)willAnimateRotationToInterfaceOrientation:(UII...
Hi, my application has a tab bar containing nav controllers. When I rotate, to landscape, I'm switching to a different view by pushing the landscape view onto the nav controller stack as follows: - (void) orientationDidChange: (NSNotification *) notification { if (self.tabBarController.selectedViewController == self.navigationC...
Hi everyone, I need to be able to rotate content inside a placeholder div based on percentage like this. The rotation will occur on page load. So each time a user reloads a page he has these chances of seeing content 1, 2 or 3 in the content placeholder: Content 1 = show 50% of the time Content 2 = show 25% of the time Content 3 = show...