camera_projection_perspective

Perspective projection parameters (field of view, aspect ratio, near/far planes).

Fields and methods

Members of the struct camera_projection_perspective. Most of what you do with a CGP type goes through the free functions listed below.

`float field_of_view = 50.0f * Pi/180`	Vertical field of view in radians, 50 degrees by default.
`float aspect_ratio = 1.0f`	Width/height ratio of the viewport, 1 by default (usually set from window_structure::aspect_ratio()).
`float depth_min = 0.01f`	Distance of the near clipping plane, 0.01 by default.
`float depth_max = 1000`	Distance of the far clipping plane, 1000 by default.

`mat4 matrix() const`	Returns the 4x4 OpenGL perspective projection matrix built from field_of_view, aspect_ratio, depth_min and depth_max. src
`mat4 matrix_inverse() const`	Returns the inverse of the perspective projection matrix (normalized device coordinates to camera space). src

Documented on another page

picking_mesh_vertex_as_sphereCasts the camera ray through the screen position and returns the closest vertex whose sphere of radius picking_distance it hits, with the hit point, the vertex normal and the vertex index (active is false if none).on vec2
picking_plane_orthogonal_to_cameraIntersects the camera ray through the screen position (relative coordinates) with the plane through plane_position orthogonal to the front direction of the camera.on vec2
picking_spheresCast a ray through a screen position (normalized device coordinates) and return the closest hit among spheres of common radius, with its index, position and normal.on vec2

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