Class PerspectiveCamera
Perspective camera class.
Fields
| PerspectiveCamera.m_projection | Projection matrix. |
| PerspectiveCamera.m_inv_projection | Inverse projection matrix. |
| PerspectiveCamera.m_view | View matrix. |
| PerspectiveCamera.center | Position where the camera is looking at. |
| PerspectiveCamera.eye | Position of the camera. |
| PerspectiveCamera.up | Normalized up vector, how the camera is oriented. |
Methods
| PerspectiveCamera:init (fov, aspect, nclip, fclip) | The public constructor. |
| PerspectiveCamera:update_view_matrix () | Updating the view matrix. |
| PerspectiveCamera:screen_point_to_ray (x, y, viewport) | Get a ray going from camera through screen point. |
| PerspectiveCamera:world_to_screen_point (x, y, z) | Transform position from world space into screen space. |
| PerspectiveCamera:get_direction () | Get direction. |
Fields
- PerspectiveCamera.m_projection
-
Projection matrix.
- m_projection mat4
- PerspectiveCamera.m_inv_projection
-
Inverse projection matrix.
- m_inv_projection mat4
- PerspectiveCamera.m_view
-
View matrix.
- m_view mat4 readonly
- PerspectiveCamera.center
-
Position where the camera is looking at.
- center vec3
- PerspectiveCamera.eye
-
Position of the camera.
- eye vec3
- PerspectiveCamera.up
-
Normalized up vector, how the camera is oriented.
- up vec3
Methods
- PerspectiveCamera:init (fov, aspect, nclip, fclip)
-
The public constructor.
Parameters:
- fov number Field of view of the Camera, in degrees.
- aspect number The aspect ratio.
- nclip number The distance of the near clipping plane from the the Camera.
- fclip number The distance of the far clipping plane from the Camera.
- PerspectiveCamera:update_view_matrix ()
- Updating the view matrix.
- PerspectiveCamera:screen_point_to_ray (x, y, viewport)
-
Get a ray going from camera through screen point.
Parameters:
- x number screen position x
- y number screen position y
- viewport table (optional) viewport rectangle (x, y, w, h)
Returns:
-
table
that containing {position = vec3, direction = vec3}
- PerspectiveCamera:world_to_screen_point (x, y, z)
-
Transform position from world space into screen space.
Parameters:
- x number screen position x or vec3
- y number screen position y
- z number screen position z
Returns:
-
vec2
object
- PerspectiveCamera:get_direction ()
-
Get direction.
Returns:
-
vec3
object