Parameter in degrees or radians

OpenGL
1

I want to use the tangens function of the glm library. However, I am not sure if the parameter is supposed to be passed in radians or degrees.

Capture

https
://glm.g-truc.net/0.9.4/api/a00136.html

2

In this case, it’s radians. All GLM functions which mirror GLSL functions use radians for angles.

For GLM functions which mirror legacy OpenGL API functions which accept angles in degrees (i.e. glRotate or gluPerspective), the situation is more complex. GLM 0.9.4 and earlier use degrees, GLM 0.9.5 uses radians if GLM_FORCE_RADIANS is defined and degrees otherwise, GLM 0.9.6 uses radians.

3

Thank you (again) for your detailed answer

4

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