Trigonometry¶
Provide functions for the trigonometric functions.
- pyrr.trig.calculate_fov(zoom, height=1.0)[source]¶
Calculates the required FOV to set the view frustrum to have a view with the specified height at the specified distance.
- Parameters:
zoom (float) – The distance to calculate the FOV for.
height (float) – The desired view height at the specified distance. The default is 1.0.
- Return type:
A float representing the FOV to use in degrees.
- pyrr.trig.calculate_height(fov, zoom)[source]¶
Performs the opposite of calculate_fov. Used to find the current height at a specific distance.
- Parameters:
fov (float) – The current FOV.
zoom (float) – The distance to calculate the height for.
- Return type:
A float representing the height at the specified distance for the specified FOV.
- pyrr.trig.calculate_plane_size(aspect_ratio, fov, distance)[source]¶
Calculates the width and height of a plane at the specified distance using the FOV of the frustrum and aspect ratio of the viewport.
- Parameters:
aspect_ratio (float) – The aspect ratio of the viewport.
fov (float) – The FOV of the frustrum.
distance (float) – The distance from the origin/camera of the plane to calculate.
- Return type:
A tuple of two floats: width and height: The width and height of the plane.
- pyrr.trig.calculate_zoom(fov, height=1.0)[source]¶
Calculates the zoom (distance) from the camera with the specified FOV and height of image.
- Parameters:
fov (float) – The FOV to use.
height (float) – The height of the image at the desired distance.
- Return type:
A float representing the zoom (distance) from the camera for the desired height at the specified FOV.
- Raises:
ZeroDivisionError – Raised if the fov is 0.0.