luciad::Camera::LookAt Struct Reference

Structure to orient a camera based on a specific target point. More...

#include <luciad/cameras/Camera.h>

Public Member Functions
	LookAt (Coordinate target, double distance, Azimuth yaw, double pitch, double roll)
	Constructs the LookAt. More...

Public Attributes
double	distance
	The distance between the camera location (eye) and the reference point. More...
double	pitch
	The pitch angle of the viewer in degrees, defined with respect to a local coordinate system based on the reference point. More...
double	roll
	The roll angle of the viewer in degrees, defined with respect to a local coordinate system based on the reference point. More...
Coordinate	target
	The point to which the camera is looking, expressed in the map reference. More...
Azimuth	yaw = 0.0
	The yaw angle of the viewer, defined with respect to a local coordinate system based on the reference point. More...

Detailed Description

Structure to orient a camera based on a specific target point.

Constructor & Destructor Documentation

LookAt()

luciad::Camera::LookAt::LookAt ( Coordinate  target, double  distance, Azimuth  yaw, double  pitch, double  roll  )

inline

Constructs the LookAt.

Parameters

target	The point to which the camera is looking, expressed in the map reference.
distance	The distance between the camera location (eye) and the reference point.
yaw	The yaw angle of the viewer, defined with respect to a local coordinate system based on the reference point.
pitch	The pitch angle of the viewer in degrees, defined with respect to a local coordinate system based on the reference point.
roll	The roll angle of the viewer in degrees, defined with respect to a local coordinate system based on the reference point.

Member Data Documentation

distance

double luciad::Camera::LookAt::distance

The distance between the camera location (eye) and the reference point.

pitch

double luciad::Camera::LookAt::pitch

The pitch angle of the viewer in degrees, defined with respect to a local coordinate system based on the reference point.

A value of zero represents a horizontal viewer (i.e. looking towards the horizon). Positive angles look up and negative angles look down.

roll

double luciad::Camera::LookAt::roll

The roll angle of the viewer in degrees, defined with respect to a local coordinate system based on the reference point.

Positive angles bank the viewer to the right; negative angles bank to the left. This value is typically 0.

target

Coordinate luciad::Camera::LookAt::target

The point to which the camera is looking, expressed in the map reference.

This location maps to the center of the camera plane.

yaw

Azimuth luciad::Camera::LookAt::yaw = 0.0

The yaw angle of the viewer, defined with respect to a local coordinate system based on the reference point.

It represents the viewing angle with respect to the north. I.e. a value of 0 means that the camera is faced to the north.