Questions tagged [rotation]

Rotation is the circular movement of an object around a specific axis.

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12
votes
4answers
21k views

GLM: Euler Angles to Quaternion

I hope you know GL Mathematics (GLM) because I've got a problem, I can not break: I have a set of Euler Angles and I need to perform smooth interpolation between them. The best way is converting them ...
1
vote
2answers
647 views

Linear Interpolation Causing Gimbal Lock?

I have created an object movement path in a 3D authoring application. Then, I exported the path (100 frames) into my custom text file in the form of Euler Angles. The next point was loading the ...
4
votes
4answers
5k views

Need a good quality bitmap rotation algorithm for Android

I am creating a kaleidoscopic effect on an android tablet. I am using the code below to rotate a slice of an image, but as you can see in the image when rotating a bitmap 60 degrees it distorts it ...
1
vote
2answers
744 views

opengl rotations for a human

I currently can rotate around a pivot point by first translating to the pivot point then performing the rotation and finally translating back to the origin. I do that easily enough for the shoulder in ...
1
vote
2answers
544 views

Rotating coordinate system

Lets say that you want to rotate simple cube around fixed point in center. Is it possible to use such coordinate system, that you need to use only sine and cosine in order to rotate? I have done ...
2
votes
4answers
5k views

per pixel based collision detection

I was wondering if anyone had any ideas on how to get per pixel collision detection for the android. I saw that the andEngine has great collision detection on rotation as well but couldn't see where ...
6
votes
1answer
3k views

Rotation of bitmap using a frame by frame animation

I have one large bitmap that has four frames drawn on it and I only draw one at a time by looping through the bitmap by increments to animate walking. I can get the bitmap to rotate correctly when it ...
0
votes
1answer
1k views

rotate player based off of joystick

Hey everyone I have this game that i am making in android and I have a touch screen joystick that moves the player around based on the joysticks position. I cant figure out how to also get the player ...
2
votes
1answer
6k views

2d tank movement and turret solution

I'm making a simple top-down tank game on the ipad where the user controls the movement of the tank with the left "joystick" and the rotation of the turret with the right one. I've spent several hours ...
3
votes
2answers
3k views

Weird rotation problem

I'm creating a simple tank game. No matter what I do, the turret keeps facing the target with it's side. I just can't figure out how to turn it 90 degrees in Y once so it faces it correctly. I've ...
1
vote
0answers
297 views

How can I draw a model perpendicular to a sloped surface? [duplicate]

Possible Duplicate: How do I find rotation in 3D based on a vector/normal? My models are axis-aligned. I know the normal of the surface I want to draw them on. How do I compute the rotations or ...
2
votes
2answers
219 views

Can't figure get the conversion from cartesian to spherical(“polar”) correctly for my orbiting camera

The two angles from the polar coordinate system are defined as hRotation and vRotation This is how they are converted from polar to cartesian: ...
4
votes
3answers
8k views

Camera Rotation using angles

I currently try to rotate a camera (using gluLookAt()) around a point , i successfully do it for rotating around one global axis. But when i want to use more than one axis , I'm stuck . I've ...
4
votes
6answers
3k views

How to get quality sprite sheet generation with rotations

I'm working on a game that uses sprite sheets with rotation for animations. While the effect is pretty good, the quality of the rotations is somewhat lacking. I exported a flash animation to png ...