Tagged Questions
2
votes
1answer
295 views
How can I create a 2D camera with upscaling and translation?
I've computed a Viewport that is fair in size (a proper aspect ratio to the given device) and then I calculate my ScaleMatrix like so:
scaleMatrix = Matrix.CreateScale(
(float) ...
1
vote
0answers
141 views
Matrix.CreateBillboard centre rotation problem
I'm having an issue with Matrix.CreateBillboard and a textured Quad where the center axis seems to be positioned incorrectly to the quad object which is rotating around a center point:
Using:
...
0
votes
1answer
89 views
How to Draw texture between 2 Vector3
My scenario:
RTS combat style, 1 unit fires beam on another unit
My problem is i want to draw a flat texture between 2 Vector3 points. I have looked at various Billboarding styles but that doesn't ...
2
votes
1answer
203 views
Movement on the X an Z axis are combined?
This is probably a stupid question, but I'm trying to simply move a 3D object up, down, left, and right (Not forward or backward).
The Y axis works fine, but when I increment the object's X position, ...
3
votes
2answers
524 views
How can I implement smooth rotation from one direction to another?
I'm having a problem with animating rotations with 1Matrix.CreateRotationY() with my basic 3D game. Based on where you click the mouse, I want the 3D object to rotate to that direction and then move.
...
0
votes
0answers
168 views
Unity3D - Projection matrix camera frustum
I've used off centre projection to create a custom projection matrix for my camera.
When I run the game I can see the scene correctly in the game view but in the editor view the camera frustum is not ...
2
votes
1answer
87 views
Camera closes in on the fixed point
I've been trying to create a camera that is controlled by the mouse and rotates around a fixed point (read (0, 0, 0)), both vertical and horizontal. This is what I've come up with:
camera.Eye = ...
0
votes
1answer
237 views
3d world vertex translation to go to 2d screen coords
My technical english is a little rusty so to avoid misunderstands please be patient with me :)
I will try to be brief and clear
Situation:
- I have a 2d sprite character on the screen
- I've just ...
2
votes
1answer
420 views
Why use 3d matrix and camera in 2D world for 2d geometric figures?
I'm working in XNA on a 2d isometric world/game and I'm using DrawUserPrimitives to draw some geometric figures...
I saw some tutorials about creating dynamic shadows but I didn't understood why they ...
3
votes
1answer
226 views
Retrieving model position after applying modeltransforms in XNA
For this method that the goingBeyond XNA tutorial provides, it would be really convenient if I could retrieve the new position of the model after I apply all the transforms to the mesh. I have edited ...
0
votes
3answers
357 views
Xna Equivalent of Viewport.Unproject in a draw call as a matrix transformation
I am making a 2D sidescroller and I would like to draw my sprite to world space instead of client space so I do not have to lock it to the center of the screen and when the camera stops the sprite ...
2
votes
2answers
414 views
Passing an objects rotation down through its children
In my topdown 2d game you have a player with a sword, like an old Zelda game.
The sword is a seperate entity, and its collision box "rotates" around the player like an orbit, but always follows the ...
8
votes
1answer
1k views
Screen space to world space
I am writing a 2D game where my game world has x axis running left to right, y axis running top to bottom, and z axis out of the screen:
Whilst my game world is top-down, the game is rendered on a ...
1
vote
2answers
588 views
Transformation order when dealing with Meshes
I have created a player model out of primitive types. To do this I have created a Model class and Component (mesh) class. Each model consists of one or more components my problems start when you have ...
1
vote
1answer
284 views
How to prevent 2D camera rotation if it would violate the bounds of the camera?
I'm working on a Camera class and I have a rectangle field named Bounds that determines the bounds of the camera. I have it working for zooming and moving the camera so that the camera cannot exit its ...
