IlvFillAccessor Class Reference

Polygon filling behavior. More...

#include <ilviews/protos/fillacc.h>

Inheritance diagram for IlvFillAccessor:

Public Member Functions
	IlvFillAccessor (const char *name, const IlvValueTypeClass *type, const char *nodeName, const char *fillerName, const char *angle)
	Creates a fill behavior. More...
Public Member Functions inherited from IlvUserAccessor
	IlvUserAccessor (const char *name, const IlvValueTypeClass *type, IlUInt flags=0)
	Constructor. More...
virtual void	initialize (const IlvAccessorHolder *object)
	Attachment method to an IlvAccessorHolder. More...
virtual IlBoolean	isOutputValue (const IlSymbol *) const
	Queries if the accessor is an output accessor. More...
IlBoolean	isPrivate () const
	Checks the private status. More...
IlBoolean	isRuntime () const
	Checks the RunTime status. More...
void	setPrivate (IlBoolean val)
	Sets the Private flag of this accessor. More...
void	setRuntime (IlBoolean runTime)
	Sets the RunTime flag of this accessor. More...
Public Member Functions inherited from IlvAccessor
	IlvAccessor (const char *name, IlvValueTypeClass *type)
	Creates a new accessor of name name and type type.
virtual IlBoolean	changeValues (IlvAccessorHolder *object, const IlvValue *values, IlUShort count)
	Called by the method IlvAccessible::changeValues() for each IlvAccessor attached to the IlvAccessorHolder.
virtual void	getAccessors (const IlSymbol *const **accessors, const IlvValueTypeClass *const **types, IlUInt &count) const
	Returns the names and types of the values handled by this accessor. More...
const IlSymbol *	getName () const
	Returns the name of the accessor. More...
IlvValueTypeClass *	getType () const
	Returns the type of the accessor. More...
virtual IlBoolean	isOutputAccessor (IlBoolean &inputAndOutput)
	Queries if the accessor is an output accessor. More...
virtual IlShort	matchValues (const IlvAccessorHolder *object, const IlvValue *values, IlUShort count, IlvValue *matchingValues=0) const
	Returns the number of values that are handled by the accessor in the values array of length count. More...
virtual void	queryValues (const IlvAccessorHolder *object, IlvValue *values, IlUShort count) const
	Called by the method IlvAccessible::queryValues() for each IlvAccessor attached to the IlvAccessorHolder.
void	setName (const IlSymbol *name)
	Sets the name of the accessor. More...

Protected Member Functions
virtual IlBoolean	changeValue (IlvAccessorHolder *object, const IlvValue &val)
	Called by the method IlvAccessible::changeValue() for each IlvAccessor attached to the IlvAccessorHolder.
virtual IlvValue &	queryValue (const IlvAccessorHolder *object, IlvValue &val) const
	Called by the method IlvAccessible::queryValue() for each IlvAccessor attached to the IlvAccessorHolder.
Protected Member Functions inherited from IlvUserAccessor
virtual IlUInt	compareValues (const IlvAccessorHolder *object, const IlvAccessible *ref, IlvValue *values, IlUShort count, IlvValueArray &diffs) const
	Compares the values in ref and object and returns the differing values. More...
IlBoolean	getValue (IlvValue &val, const IlvAccessorHolder *object, IlvDisplay *display, IlvValueTypeClass *typeClass=0, IlSymbol *typeVal=0, const IlvValue *arg=0) const
	Evaluates a parameter of a user accessor. More...

Detailed Description

Polygon filling behavior.

Library: ilvproto

IlvFillAccessor is a subtype of IlvUserAccessor used to "fill" a polygon with another one up to a specified level. It can be used to represent filled tanks or pipes with arbitrary shapes.

Constructor & Destructor Documentation

IlvFillAccessor()

IlvFillAccessor::IlvFillAccessor	(	const char *	name,
		const IlvValueTypeClass *	type,
		const char *	nodeName,
		const char *	fillerName,
		const char *	angle
	)

Creates a fill behavior.

This accessor handles a value of name name that represents a filling ratio. The ratio is a floating-point value between 0.0 and 1.0. When the value is changed, the points of the filler polygon are computed so that it is superposed over the filled polygon (except that it is truncated at the level specified by the fill ratio). The filler polygon can be created initially with any number of points and any geometry: its points will be completely recomputed. The fill ratio defines the height of the filler polygon with respect to the height of the filled polygon, and not its surface. The height is computed in the direction defined by the angle. The example below shows a polyline filled with a polygon at a ratio of 0.6 and an angle of 45 degrees.

Parameters

name	Name of the attribute.
type	Type of the attribute. It should be a numeric type such as IlvFloatValueType.
nodeName	Name of a graphic node that must contain an instance of a subclass of IlvPolyPoints (the "filled" polygon).
fillerName	Name of a graphic node that must contain another IlvPolyPoints (the "filler" polygon).
angle	Specifies the angle (in degrees) at which the polygon is filled, that is, the angle of the segment representing the limit of the filling fluid. If angle is equal to 0, the polygon is filled from bottom to top, and the segment is horizontal. If angle is equal to 90, the polygon is filled from left to right, and the segment is vertical. angle can take any value, not only multiples of 90. The angle parameter can contain a constant value (for example, 90), the name of another accessor (for example, fillAngle), or any arithmetic expression containing accessor names or constants (for example, radians/3.1415*180).

See also

IlvUserAccessor::getValue.