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INNER JOIN vs LEFT JOIN performance in SQL Server
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WebSockets protocol vs HTTP
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pyplot scatter plot marker size
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Fritz
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Convert a Git folder to a submodule retrospectively?
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How can I access and process nested objects, arrays or JSON?
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Big O, how do you calculate/approximate it?
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What's the purpose of using braces (i.e. {}) for a single-line if or loop?
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What do Clustered and Non clustered index actually mean?
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eval command in Bash and its typical uses
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How to use glOrtho() in OpenGL?
...EXIT_SUCCESS;
}
GitHub upstream.
Compile:
gcc -ggdb3 -O0 -o main -std=c99 -Wall -Wextra -pedantic main.c -lGL -lGLU -lglut
Run with glOrtho:
./main 1
Run with glFrustrum:
./main
Tested on Ubuntu 18.10.
Schema
Ortho: camera is a plane, visible volume a rectangle:
Frustrum: camera is ...