Constraint Types
The
kind
parameter of the
QTVRGetViewingLimits
,
QTVRGetConstraints
,
QTVRSetConstraints
, and
QTVRWrapAndConstrain
functions specifies the type of angle or other feature of which you want to determine or set the constraints (that is, the limits of the current node). You can pass one of these values in that parameter:
enum {
kQTVRPan = 0,
kQTVRTilt = 1,
kQTVRFieldOfView = 2,
kQTVRViewCenterH = 4,
kQTVRViewCenterV = 5
};
Constant descriptions
-
kQTVRPan
-
The pan angle. The associated value is of type
float
.
-
kQTVRTilt
-
The tilt angle. The associated value is of type
float
.
-
kQTVRFieldOfView
-
The field of view. The associated value is of type
float
.
-
kQTVRViewCenterH
-
The horizontal view center. This value is valid only for the
QTVRWrapAndConstrain
function, which returns the horizontal view center constrained in the current field of view. The minimum and maximum values of the horizontal view center change for every field-of-view setting. If the field of view of the object is the maximum field of view, the object's horizontal view center is constrained to a single value that is the horizontal center of the object image in display coordinates (rounding down any fractional pixels).
-
kQTVRViewCenterV
-
The vertical view center. This value is valid only for the
QTVRWrapAndConstrain
function, which returns the vertical view center constrained in the current field of view. The minimum and maximum values of the vertical view center change for every field-of-view setting. If the field of view of the object is the maximum field of view, the object's vertical view center is constrained to a single value that is the vertical center of the object image in display coordinates (rounding down any fractional pixels).
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