projection matrix - OpenGL 3D Transformation: z-Aspect ratio -

-

I am launching 3D perspective in OpenGL (WebGL), I am doing it with uniform-matrix. Ever been working fine, but I have an aspect ration of 3: 2 (600 px x 400 px) and it is sung in all geometry.

In 2D, I get it in the model matrix through X and Y respectively 1 / width and 1 / height.

Now I have a life to worry too and I do not know how to distract z on my 3: 2 aspect ratio.

Model matrix does not offer any opportunity to do this and I do not know what to do / what to do in projection matrix.

Edit: Projection matrix: 

  @_ pMatrix = [1, 0.0, 0.0, 0.0, 0.0, 1, 0.0, 0.0, 0.0, 0.0, - ( F + n) / (f - n), -1, 0.0, 0.0, - 2.0 * n * f / (f - n), 0.0]

column head order

Editing 2: Strange Distortions on N & LT; 1 img

You do not want * left *, * right *, * top *, * down * in your projection matrix. 

  2 * n ----- 0 0 rl 2 * n ----- 0 tb r + l t + b - (f + n) ---- - ----- ------ - 1 RL TB FN-2F * N 0 ------ FN

If you type in (RL) / (TB) = 3/2 The amount of viewing this way is the proper size for your model, then you should set.

Here are some slides describing various projection metrics, how they got:

They are the author of Edward Angel, where I found this matrix. Unfortunately, the OpenGL Red Book does not work at all through mathematics.


Comments

Post a Comment

Popular posts from this blog

apache - 504 Gateway Time-out The server didn't respond in time. How to fix it? -

-
Using a form submission on an embedded iframe , the customer downloads a compressed log file Requested. The request was sent to the server, which is the compressed log files, perform some database operations and returns a compressed file. After just 2 minutes, 504 gateway time-out server did not respond timely message on browser net panel How to fix this error? The log files were taking a long time to compress, and timeout was set to 2min The error was fixed by extending the file file: # # timeout: The number of seconds before getting the time out. # # # Timeout 120 timeout 600
Read more

c# - .net WebSocket: CloseOutputAsync vs CloseAsync -

-
We have a working ASP.NET Web API REST service, which is one of the methods of our controller, HTTPTTEX. .) Socket handler code looks something like this ... Public async task socket handler (AspNetWebSocketContext context) {_webSocket = context.WebSocket; ... while (! Cts.IsCancellationRequested) {WebSocketReceiveResult Results = _webSocket.ReceiveAsync (Input Segment, cts.Token) .Result; WebSocketsStateCollusocketState = _webSocket.State; If (result.MessageType == WebSocketMessageType.Close || currentSocketState == WebSocketState.CloseReceived) {// What should I use. CloseAysnc () or. CloseOutputAsync ()? _webSocket.CloseOutputAsync (WebSocketCloseStatus.NormalClosure, "Client Requested", cts.Token). Wait (); } If (currentSocketState == WebSocketState.Open) {...}}} .What is the difference between .CooseAsync () and CloseOutputAysnc ()? I tried both of them and they both seemed to work fine but some difference should be the same they both describe very similar to...
Read more

c++ - How to properly scale qgroupbox title with stylesheet for high resolution display? -

-
I am trying to apply a stylesheet for QGroupBox (QT4.8), which works on the normal screen ( 96 dpi) high resolution screen (Yoga 2 Pro, 3200x1800, 275 dpi, windows 8.1). The following style looks good on the 275 dpi screen, but the top margins on a regular 96 dpi screen are far too big. QGroupBox {border: 1px solid red; Range radius: 7px; Margin-top: 12x; } QGroupBox :: Title {subcontrol-origin: margin; Subcontrol-position: left above; Padding-left: 10px; Padding-right: 10px; } Changing the top-margin has an effect, but I did not get a proper setting which works on both screens. If I shorten the value, the content of the group box overlaps with the title on 275 dpi screen. I was also playing with units "East", "PX", "MX", "PT". Reading the document I would have guessed, "2 X" was the correct solution, which should be scaled with different screen resolutions. Without the stylesheet, the groupbox works well on both screens. ...
Read more