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26
votes
6answers
3k views

Why don't all games permit changing the field of view?

This is less of a question aimed at developing a game and more about the technology behind it. A number of gaming journalists and pro gamers (both on the tournament and the home entertainment sector) ...
6
votes
4answers
440 views

Is a game view “stack” really a Stack?

Given the academic definition of a Stack as "A data structure where items are added in a FILO manner and accessed in such a way that only the top item may be examined or removed to be modified." Game ...
4
votes
1answer
109 views

Can you help me solve the paradox that has confused me about the glViewport and glOrtho functions?

suppose that I have an image that I want to apply as a texture on a geometry (at time we don't consider texture mapping but this image has a certain width and height here it is a 512x512 image) I want ...
4
votes
2answers
1k views

Multiple viewpoints in Unity3D?

I'm working on a 3D game in Unity. The primary view is a top-down view, but I am also looking to do target profiles that are true animated versions that reflect the actions of the target. The ...
4
votes
1answer
168 views

How do I ensure that perspective and orthographic projection matricies show objects at the same size on the screen?

I am working on a 3d scene editor and would like to show the scene in orthographic projection. My current problem is that I am not sure how to calculate the orthographic projection matrix such that ...
4
votes
2answers
225 views

Render a 3D scene in multiple windows - extended panoramic view

Is there any resource location on how to view a 3D scene from an application or a game on multiple windows or monitors? Each window should continue drawing from where the neighbouring one left off (in ...
3
votes
2answers
145 views

Formula for converting ratio of current device to target device

I am designing my (Android/OpenGL ES 2.0) app on one device and want it to run all all other devices while keeping the screen ratio of the development device (so the image doesn't stretch / squash), ...
2
votes
1answer
93 views

How to obtain touch events from a GL Viewport, not the whole screen?

Background I'm implementing viewport resizing in order for my game to maintain the same display ratio on all devices. However, I've found an issue with getting touch events. Basically, if my ...
1
vote
3answers
106 views

Can I use a translate function to implement a viewport?

I read this great question and its accompanying great answer about rendering a viewport in a top down 2D game: As for actually drawing the objects the camera can "see", you now draw all objects ...
1
vote
1answer
189 views

Centering GLViewport position within physical screen

I'm developing my app on one device and want it to display at the same ratio on all other devices. Currently what I have is 'image 1' in my image below - the game fits perfectly onto my development ...
1
vote
1answer
29 views

How do I render into a sub-region of a texture atlas with XNA / HLSL?

Is it possible to render into a texture atlas? I've been wondering how to reduce the number of textures required for shadow-mapping, and came across a blog post here about rendering up to sixteen ...
1
vote
1answer
314 views

Tiled map seen from an angle

I have working code to display a tiled map. It's composed of a OrthogonalTiledMapRenderer and an OrthoGraphicCamera : camera.setToOrtho(false, WORLD_WINDOW_SIZE.x, WORLD_WINDOW_SIZE.y); ...
1
vote
0answers
114 views

How can I scroll an HTML table when the player drags near the screen edge? [closed]

I'm trying to make my Word Search game mobile friendly. I want to display a grid of letters on the user's phone. The letters must be big enough that the user can touch them individually. My problem ...
1
vote
2answers
195 views

Orthographic Zooming with 0,0 at top/left

I'm trying to implement zooming on my 2D game. Since it's using orthographic projection, I thought it would be easy to implement zooming. After looking around the internet, I found a bunch of ...
0
votes
1answer
163 views

Camera Calculation

For my game I don't able to decide what camera resolution I have to use ? Normally I use 1024x600 landscape resolution of camera for my game and create single graphics for my game. But I found that ...
0
votes
1answer
54 views

Changing the maxDepth of viewport

Whenever I change the maxDepth of the viewport from 1.0 to say 300.0f (just for kicks), everything on my screen disappears. Why is that? Is there anywhere else I have to account for this change in ...
0
votes
2answers
280 views

3d vertex translated onto 2d viewport

I have a spherical world defined by simple trigonometric functions to create triangles that are relatively similar in size and shape throughout. What I want to be able to do is use mouse input to ...
0
votes
0answers
102 views

Screen space to world space revisited

I am revisiting some code that I thought I understood, but have found that I do not quite understand it. I put together a test to see what was going on. Here's the code: [Fact] public void wtf() { ...
0
votes
1answer
227 views

Projecting world coordinates to screen coordinates issue - points disappear when origin not in view

I am trying to implement a 2d line drawing effect on a 3d mesh using Ogre. In order to do so, I perform silhouette detection on the lines of the object (this works) and then project these lines from ...
0
votes
0answers
114 views

Unexpected viewport location using monogame

I'm having an issue with viewports not appearing where they should. Two viewports appear a good 10 pixels below where they should be. I created a very simple test project that does nothing more than ...
-1
votes
1answer
260 views

View port for my canvas game

I am developing a canvas game, and im struggling to get my head around how i can make a view port so when the character moves the world moves with it. Unlike traditional 2d maps built with arrays i ...
-1
votes
1answer
237 views

Multiple viewports [closed]

[Problem solved ! I canno't answer with the response because i have less than 10 reputations. I have to wait 8 hours.] Currently, i'm trying to display 3 viewports. 1st : This viewport is the entire ...