The tag has no usage guidance.

learn more… | top users | synonyms

0
votes
0answers
28 views

How to convert Non-Axis Aligned Bounding Boxes to AABB

I'm trying to write a raytracer to render boxes (cubes) that are arbitrarily rotated, i.e. not necessarily axis aligned. While I'm reasonably comfortable ray-tracing an axis-aligned cube, I don't know ...
0
votes
1answer
58 views

Getting vector relative to other vector in rotating object

So I have a rotating object a. It is rotating at non-constant speed around it's local x axis. It is parented to object b. When the object a rotates, it's local x axis stays facing the same direction ...
0
votes
1answer
57 views

Z - Axis value is changing if I move the Game Object in X - Axis in Unity

I am on a small game project . Everything was just fine , but now I have some wired problem . That is Game Object movement . If I move the game object in X - Axis using the gizmo , the value of Z - ...
1
vote
0answers
37 views

How to find or compute or look for overall/max RPM by simply checking for rotation?

I find it hard to determine the wheel RPM since I'm only making a simple 2D game of rotating object via Z-axis. I wanna try this solution but I got no change since I'm trying to find the RPM from a ...
1
vote
1answer
82 views

3D Planetary gravity

so i am making a thing in javascript and i want to have planetary gravity in my "universe". But when i use an equation to calculate the acceleration by gravity i get one number. That is how fast the ...
0
votes
1answer
93 views

Gamepad default trigger identification in Windows

I'm currently writing an interface driver for my Moga Power Pro controller on Windows. I'd like to release it for others to use, but first I have some questions on expected default mappings for the ...
2
votes
1answer
44 views

How to change XNA coordinates directions?

Usually XNA increases X coordinate to right and Y to down. Like this: But in my project i have 2D map. Drawing tile with bigger Y coodinate below OX looking strange (usually people imagines these ...
1
vote
2answers
847 views

Can't set up a PS3 controller in Unity

So I connected a ps3 controller to my computer via USB cable, when I press play I am able to move by using arrows on the left of the ps3 controller and also I am able to shoot and aim by triangle and ...
1
vote
2answers
220 views

Unity 3D - Confine a gun rotation within certain degrees

I am having troubles making my gun rotate up and down, and have limits, for example, I want the down limit to be 0 degrees, and the up limit to be 90 degrees. Currently I can't figure out how to ...
1
vote
1answer
324 views

How to modify the Unity sprite renderer (or create a custom one) that can display the sprites on the X-Z plane?

Prefix: I am NOT trying to rotate a sprite 90 degrees by it's transform, this changes what is up/down and forward/backwards for the object. I need the sprite displayed on the X-Z plane in comparison ...
0
votes
1answer
42 views

Matrix Rotation Only Works On one Axis At A Time

I have this function in my vertex shader. It makes a transformation matix out of a transformation matrix, a rotation and an intensity. It works just fine when setting the rotation of one of the axis (...
1
vote
1answer
389 views

How to constrain axis-angle rotation?

I have a problem where I'm performing an axis-angle rotation and am trying to constrain my rotations. Specifically I have a skeleton (model/mesh with rig, transforms are hierarchy parented to pelvis ...
-3
votes
1answer
358 views

Move the Object in y-axis when the timer increases [closed]

I have a model(.Fbx object),I have placed a timer.When the timer starts increasing the model/object should move down(along y axis).
1
vote
2answers
100 views

Standard key bindings for movement along three axes?

I understand that the WASD keys are standard for moving a character along two axes (left/right, up/down) because in the QWERTY layout, they are arranged like the arrow keys. I want to make a game ...
1
vote
0answers
145 views

PhysX - Revolute joint around unit vector

I'm using a right-handed coordinate system with (0,0,-1) = forward, (1,0,0) = right and (0,1,0) = up. PhysX version is 3.3.0. I have a unit vector which represents the axis around which my actor is ...
1
vote
1answer
284 views

3D model editor manipulators

I'm trying to make my own 3D model editor to better learn 3D programming. I have my translate manipulators and I'm trying to calculate the Vector2 that the mouse would have to move in order to move an ...
1
vote
0answers
299 views

Separating Axis Theorem Issue

I am trying to create a 2d top down shooter using DirectX 11 (Windows 8 Store) and I am trying to implement OOBB collision using the Separating Axis Theorem. However I appear to have run into an ...
1
vote
2answers
2k views

“Align” a rotation to a direction

Good day all. I have a 3d object with a random rotation. I can express that object's rotation both through a quaternion or through an euler rotation. Then I have a vector3 normal that I get from a ...
0
votes
2answers
591 views

How to properly translate a point by a matrix?

I wrote a simple Matrix class and it has methods like rotate, translate, etc. They all seem to be working, but whenever I try to translate a rectangle using the matrix, the translation axis seem to be ...
1
vote
0answers
656 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" ...
3
votes
1answer
247 views

How do I determine a device's default orientation?

I am developing a game with accelerometer controls. This works well on all the mobile phones I've tested it on. However, when testing on a tablet, the y and x axes are reversed, presumably because the ...
7
votes
2answers
755 views

How do I convert a 2D movement (from mouse) to a displacement along a 3d axis?

I'm making a small 3D scene editor (that only allow to modify objects positions). Each object is draw with a 3d X/Y/Z axis : How it works : user choose an axis (X, Y or Z) by left clicking on it, ...
14
votes
4answers
5k views

Why is Y up in many Games?

I learned at school that the z-axis is up. It is the same in modeling software like Blender. However in many games the y-axis is up. What is reason?