IBM Visualization Data Explorer Programmer's Reference

16.7 Camera Class

A Camera Object stores parameters that relate a scene to an image of the scene, including camera position and orientation, field of view, type of projection, and resolution. It specifies the transformation from world coordinates to image coordinates.

Camera DXNewCamera()
Creates a new Camera. See DXNewCamera.
Camera DXSetView()
Specifies the Camera position, a point on the line of sight of the Camera, and the Camera orientation. See DXSetView, DXGetView.
Camera DXSetOrthographic()
Specifies an orthographic view. The width of the viewport in the world coordinates and the aspect ratio are specified. See DXSetOrthographic, DXGetOrthographic.
Camera DXSetPerspective()
Specifies a perspective view. The field of view specifies the tangent of half the angle of the field of view. The height of the view is the specified aspect times the width. See DXSetPerspective, DXGetPerspective.
Camera DXSetBackgroundColor()
Specifies the background color of a scene. See DXSetBackgroundColor, DXGetBackgroundColor.
Camera DXSetResolution()
Specifies the resolution of a Camera. See DXSetResolution, DXGetCameraResolution.
Camera DXGetView()
Returns the camera view parameters. See DXSetView, DXGetView.
Camera DXGetOrthographic()
Returns the orthographic camera parameter. See DXSetOrthographic, DXGetOrthographic.
Camera DXGetPerspective()
Returns the perspective camera parameters. See DXSetPerspective, DXGetPerspective.
Camera DXGetBackgroundColor()
Extracts a scene background color associated with a camera. See DXSetBackgroundColor, DXGetBackgroundColor.
Camera DXGetCameraResolution()
Returns the camera resolution. See DXSetResolution, DXGetCameraResolution.
Matrix DXGetCameraMatrix() Matrix DXGetCameraMatrixWithFuzz(); Matrix DXGetCameraRotation();
Return matrices that represent stages of the viewing operation. See DXGetCameraMatrix, DXGetCameraRotation, DXGetCameraMatrixWithFuzz.

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`Camera DXNewCamera()`	Creates a new Camera. See DXNewCamera.
`Camera DXSetView()`	Specifies the Camera position, a point on the line of sight of the Camera, and the Camera orientation. See DXSetView, DXGetView.
`Camera DXSetOrthographic()`	Specifies an orthographic view. The width of the viewport in the world coordinates and the aspect ratio are specified. See DXSetOrthographic, DXGetOrthographic.
`Camera DXSetPerspective()`	Specifies a perspective view. The field of view specifies the tangent of half the angle of the field of view. The height of the view is the specified `aspect` times the width. See DXSetPerspective, DXGetPerspective.
`Camera DXSetBackgroundColor()`	Specifies the background color of a scene. See DXSetBackgroundColor, DXGetBackgroundColor.
`Camera DXSetResolution()`	Specifies the resolution of a Camera. See DXSetResolution, DXGetCameraResolution.
`Camera DXGetView()`	Returns the camera view parameters. See DXSetView, DXGetView.
`Camera DXGetOrthographic()`	Returns the orthographic camera parameter. See DXSetOrthographic, DXGetOrthographic.
`Camera DXGetPerspective()`	Returns the perspective camera parameters. See DXSetPerspective, DXGetPerspective.
`Camera DXGetBackgroundColor()`	Extracts a scene background color associated with a camera. See DXSetBackgroundColor, DXGetBackgroundColor.
`Camera DXGetCameraResolution()`	Returns the camera resolution. See DXSetResolution, DXGetCameraResolution.
`Matrix DXGetCameraMatrix() Matrix DXGetCameraMatrixWithFuzz(); Matrix DXGetCameraRotation();`	Return matrices that represent stages of the viewing operation. See DXGetCameraMatrix, DXGetCameraRotation, DXGetCameraMatrixWithFuzz.