camera_first_person

Camera with a free position and orientation (first person view).

Derives from: camera_generic_base

Fields and methods

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

`rotation_transform orientation_camera`	Orientation of the camera frame (identity by default, the camera then looks toward -z).
`vec3 position_camera`	Position of the camera in world space, (0,0,0) by default.

`camera_first_person()`	Builds a first person camera at the origin with identity orientation (looking toward -z). src
`vec3 position() const`	Returns position_camera. src
`rotation_transform orientation() const`	Returns orientation_camera. src
`void manipulator_rotate_roll_pitch_yaw(float roll, float pitch, float yaw)`	Rotates the camera around its own position by an incremental rotation, expressed in the current camera frame, of angles roll (around the view direction), pitch (around the right axis) and yaw (around the up axis), in radians. src
`void manipulator_translate_in_plane(vec2 const& tr)`	Translates the camera by tr.x * right() + tr.y * up(). src
`void manipulator_translate_front(float magnitude)`	Translates the camera by magnitude * front(). src
`void look_at(vec3 const& eye, vec3 const& center, vec3 const& up)`	Places the camera at eye looking toward center with the given up vector. src

Inherited from camera_generic_base (6 members)

`frame to_frame() const`	Returns the camera frame built from orientation() and position(). src
`mat4 matrix_view() const`	Returns the 4x4 view matrix (world to camera), the inverse of the camera frame matrix. src
`mat4 matrix_frame() const`	Returns the 4x4 matrix of the camera frame (camera to world), the inverse of matrix_view(). src
`vec3 front() const`	Returns the viewing direction, the opposite of the third column (local z axis) of orientation(). src
`vec3 up() const`	Returns the up direction of the camera, the second column (local y axis) of orientation(). src
`vec3 right() const`	Returns the right direction of the camera, the first column (local x axis) of orientation(). 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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