camera_first_person_euler

First person camera oriented by yaw and pitch angles (keeps the up direction).

Derives from: camera_generic_base

Fields and methods

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

`float roll`	Twist angle in radians around the view direction, 0 by default.
`float pitch`	Up/down rotation angle in radians around the local x axis, 0 by default.
`float yaw`	Left/right rotation angle in radians around axis_of_rotation, 0 by default.
`vec3 axis_of_rotation`	Up direction of the camera when pitch = 0, around which yaw rotates, (0,1,0) by default.
`vec3 position_camera`	Position of the camera in world space, (0,0,0) by default.

`void manipulator_twist_rotation_axis(float magnitude)`	Rotates axis_of_rotation by the angle magnitude (radians) around R_axis * (0,0,1), the front direction of the frame when yaw = pitch = 0. src
`void manipulator_rotate_roll_pitch_yaw(float d_roll, float d_pitch, float d_yaw)`	Adds d_roll, d_pitch and d_yaw (radians) to the angles roll, pitch and yaw. 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 set_rotation_axis(vec3 axis)`	Sets axis_of_rotation to axis without changing the angles (the axis is used as given, it is not normalized). src
`void look_at(vec3 const& eye, vec3 const& center)`	Places the camera at eye looking toward center by setting position_camera, pitch and yaw; roll and axis_of_rotation are kept, so the up vector is not a free parameter. src
`camera_first_person_euler()`	Builds an Euler first person camera at the origin with zero angles and axis_of_rotation (0,1,0). src
`vec3 position() const`	Returns position_camera. src
`rotation_transform orientation() const`	Returns the rotation R_axis * R_yaw * R_pitch * R_roll, where R_axis maps (0,1,0) to axis_of_rotation, yaw is around y, pitch around x and roll around -z. 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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