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4
votes
1answer
185 views

How to transform mesh components?

I am attempting to transform the components of a mesh directly using a 4x4 matrix. This is working for the vertex positions, but it is not working for the normals (and probably not the tangents ...
3
votes
1answer
442 views

How rotate a 3D cube at its center XNA?

I try to rotate a 3D cube on itself from its center, not the edge. Here is my code used. public rotatemyCube() { ... Matrix newTransform = Matrix.CreateScale(scale) * ...
3
votes
1answer
179 views

Shear transformation in the projection matrix?

I am trying to understand what the shear transformation (l+r/r-l & b+t/t-b) is actually doing in the projection matrix? The only thing I got till now is headache :) Can you please help?
3
votes
1answer
1k views

Rotate object to always face camera

I'm trying to make a TextMesh appear when ever an enemy prefab is hit. I currently have this functionality working. However, the text doesn't face the direction the players camera is looking. At the ...
2
votes
4answers
295 views

(unity) move the world or the character

I'm making a game like this: https://www.youtube.com/watch?v=hO7573lphqI wherein a 3D ship is flying around on a 2D plane. From the player's perspective, the ship will stay stationary in the center ...
1
vote
1answer
6k views

Correct way to use a GameObject.Find method in Unity C#

I have been following along with a Lynda.com video course to familiarize with Unity. I am currently attempting to grab a reference to a scene's First Person Controller's transform as follows: ...
1
vote
1answer
1k views

Unity3D Drag Object with Mouse Gives Invalid Position

I am trying to implement a simple script to drag a GameObject with the mouse in Unity. However, when the position of the object is updated with the following script, I get an error saying: ...
1
vote
1answer
183 views

Skeletal Animation with UV seams

I have a UV-mapped model that I am about to animate and load into my game. Like most unwrapped models, I have several UV seams. In order to render the model correctly, I split each vertex along the ...
1
vote
1answer
39 views

How can I transform a Point2f with a matrix on Android?

I'm developing for Android and I'm using the android.renderscript.Matrix3f class to do some calculations. What I need to do now is to now is to do something like mat.tranform(pointIn, pointOut); So ...
1
vote
1answer
153 views

Rotate an image in a scaled context

Here is my working piece of code to rotate an image toward a point (in my case, the mouse cursor). float dx = newx - ploc.x; float dy = newy - ploc.y; float angle = (float) ...
1
vote
1answer
152 views

How to translate swipe gestures into rotations?

I am making a snake game. I want to rotate my snake in the direction specified by swiping on the screen, the directions are limited to orthogonals (90 degree increments). It's an android game. Can ...
1
vote
0answers
266 views

Move parent according to child axis in Unity?

Can I ask my parent to move according to the child axis? This means if I turn right, then right again, the parent has to be at 180° from its original position, and not only at 90° (because "Right" ...
1
vote
2answers
362 views

Pygame's rotation methods have crippling issues, but is it me or Python's pygame?

http://www.youtube.com/watch?v=lNJFxvR6ex8&feature=youtu.be On rotate and rotozoom, can't find fixes on these on the internet, anywhere. Basically, the video is showing 4 things in this order: 1. ...
0
votes
2answers
87 views

Need transform matrix to translate the center of the view to a custom position within the target texture

My problem is as follows: I want to use a single render target texture for drawing 16 viewports where I want to display the 16 different combinations of the marching squares algorithm with my 3D ...
0
votes
1answer
144 views

OpenGL Transform Feedback output size

I'm working on a particle system using transform feedback, and I would like to know if it is possible to render to anything other than floats, like halfs, using Transform Feedback (OpenGL 3.3)? It ...
0
votes
2answers
2k views

Unity scaling instantiated GameObject at Start() doesn't “keep”

I have a very simple scenario: A box-like Prefab which is imported from Blender automatically (I have the .blend file in the Assets folder). A script that has two public GameObject fields. In one I ...
0
votes
1answer
125 views

How do I animate Unity GUIComponents?

I want to transform my GUIWindow from the bottom of the screen to the middle whenever the user presses a button. How can I do this?
0
votes
0answers
35 views

How to change OpenGL Transform Feedback attributes size / type?

I've got an openGL particle system running on the GPU using transform feedback. Some of the attributes are floating point, others are integer, but that's too much for some attributes, as HALF is ...