Structure describing the position of the camera for an orthographic top-down view. More...

#include <luciad/cameras/Camera.h>

Public Member Functions
	Look2D (Coordinate mapOrigin, Coordinate viewOrigin, double scaleX, double scaleY, Azimuth rotation)
	Constructs the Look2D. More...

Public Attributes
Coordinate	mapOrigin
	The origin, defined in the map reference. More...

Azimuth	rotation = 0.0
	The rotation of the camera. More...

double	scaleX
	The scale on the horizontal axis in device independent pixels per map unit. More...

double	scaleY
	The scale on the vertical axis in device independent pixels per map unit. More...

Coordinate	viewOrigin
	The view origin, defined in view coordinates (device independent pixels, (0, 0) at the bottom left of the screen). More...

Detailed Description

Structure describing the position of the camera for an orthographic top-down view.

This following picture shows:

the relation between the map and view origins
how scaleX and scaleY map the map units (meters) onto pixels

Camera Look2D

Constructor & Destructor Documentation

◆ Look2D()

luciad::Camera::Look2D::Look2D	(	Coordinate	mapOrigin,
		Coordinate	viewOrigin,
		double	scaleX,
		double	scaleY,
		Azimuth	rotation
	)

inline

Constructs the Look2D.

Parameters

mapOrigin	The origin, defined in the map reference.
viewOrigin	The view origin, defined in view coordinates (device independent pixels, (0, 0) at the bottom left of the screen).
scaleX	The scale on the horizontal axis in device independent pixels per map unit.
scaleY	The scale on the vertical axis in device independent pixels per map unit.
rotation	The rotation of the camera.

Member Data Documentation

◆ mapOrigin

Coordinate luciad::Camera::Look2D::mapOrigin

The origin, defined in the map reference.

The origin is mapped to viewOrigin.

◆ rotation

Azimuth luciad::Camera::Look2D::rotation = 0.0

The rotation of the camera.

See Azimuth to see how the rotation is defined.

◆ scaleX

double luciad::Camera::Look2D::scaleX

The scale on the horizontal axis in device independent pixels per map unit.

◆ scaleY

double luciad::Camera::Look2D::scaleY

The scale on the vertical axis in device independent pixels per map unit.

◆ viewOrigin

Coordinate luciad::Camera::Look2D::viewOrigin

The view origin, defined in view coordinates (device independent pixels, (0, 0) at the bottom left of the screen).

The view origin is mapped to mapOrigin. It is usually the center of the host component. A typical use case for changing the viewOrigin is to zoom in on a specific point, e.g. at the current mouse position.

Public Member Functions

Public Attributes