OdDbMPolygon Class

Class Hierarchy

Syntax

C++

class OdDbMPolygon : public OdDbEntity;

File

DbMPolygon.h

Description

This class processes one or more closed polygons as a single polygon. Corresponding C++ library: AcMPolygonObj15

TD_Db

	Name	Description
	~OdDbMPolygon	Destroys the multi polygon object.
	OdDbMPolygon	Creates a new instance of a multi polygon object with default parameters.

OdDbMPolygon Enumerations

	Name	Description
	loopDir	Declares the loop directions.

OdDbMPolygon Methods

	Name	Description
	appendLoopFromBoundary	This is the overview for the appendLoopFromBoundary method overload.
	appendMPolygonLoop	Appends a polygon loop.
	balanceDisplay	Checks loops for intersection and direction. If the cycle is placed at an even level of the tree, and the direction is clockwise, it will be marked as invalid (it will not be displayed). To change direction to the right, use balanceTree. If the cycle intersects with another cycle, the cycle with a higher index will be marked as invalid (do not draw). Loops that have been marked as invalid but have the correct direction and no intersections will be marked as valid and will be drawn again.
	balanceTree	Checks the direction of the loops and changes to the correct one. The directivity check is based on the resulting tree from getMPolygonTree. Where the depth of the tree indicates the direction of the loop (even values are counterclockwise, not even clockwise). If in MPolygon are loops that are not displayed (invalid), they will be marked again as valid (and will be drawn) if they do not intersect with others. Also check for intersections of the displayed loops(valid). Intersected loops marks as invalid, and there will be not draw.
	createLoops	Create loops from for empty OdDbMPolygon.
	createLoopsFromBoundaries	Create loops from entities for empty OdDbMPolygon. Every ObjectId must be one closed loop.
	deleteMPolygonTree	Recursive delete tree created by OdDbMPolygon::getMPolygonTree(OdDbMPolygonNode*&)
	dwgInFields	Reads the .dwg file data of this object.
	dwgOutFields	Writes the .dwg file data of this object.
	dxfInFields	Reads the DXF data of this object.
	dxfOutFields	Writes the DXF data of this object.
	elevation	Returns the elevation of this entity in the OCS.
	evaluateHatch	Evaluates the hatch for this MPolygon entity.
	getArea	Returns the area of this entity.
	getClosestLoopTo	Find within pick box the closest loop from OdDbMPolygon to input 3d point within pick box.
	getLoopDirection	Gets the direction of the specified loop in the closed polygon. Returns eOk if successful, or eInvalidInput if loop index is out of range.
	getMPolygonLoopAt	Returns the specified loop.
	getMPolygonTree	Creates a nesting tree of nodes. Where the nodes represent the nesting of the loops.
	getOffsetVector
	getParentLoop	Returns a index of the parent loop, related to the specified loop.
	getPatternDefinitionAt	Returns the specified pattern definition line.
	getPerimeter	Perimeter calculation by adding the length of all borders.
	hatch	This is the overview for the hatch method overload.
	insertMPolygonLoopAt	Insert a polygon loop to the specified position.
	isBalanced	Checks if there are loops that are not drawn(invalid). Do not check loops that are draw(valid) for intersection or direction.
	isPointInsideMPolygon	The function projects worldPt to the polygon plane, then if the point is on some boundary, indices of these boundaries are added to the loopsArray and the function returns, otherwise it finds innermost loop containing the point and adds its index to the loopsArray before returning.
	isPointOnLoopBoundary	Determines whether the specified point in WCS is on the specified loop of the polygon.
	normal	Returns the WCS normal to the plane of this entity.
	numMPolygonLoops	Returns the number of loops in the closed polygon.
	numPatternDefinitions	Returns the number of pattern definition lines.
	patternAngle	Returns the pattern angle.
	patternColor	Returns the color information as an OdCmColor instance.
	patternDouble	Returns the pattern double flag.
	patternName	Returns the name of the pattern.
	patternScale	Returns the pattern scale.
	patternSpace	Returns the pattern spacing.
	patternType	Returns the hatch pattern type for this MPolygon entity.
	removeMPolygonLoopAt	Remove a polygon loop from the specified position.
	saveAs	Creates a geometric representation of this entity for saving proxy graphics or converting to previous formats.
	setElevation	Sets the elevation of this entity in the OCS.
	setGradient	Sets the gradient type and name.
	setGradientAngle	Returns the angle of the gradient.
	setGradientColors	Set the colors and interpolation values describing the gradient fill.
	setGradientOneColorMode	Controls the oneColorMode.
	setGradientShift	Sets the interpolation value between the default and shifted values of the gradient's definition.
	setLoopDirection	Sets the direction for the specified loop in the closed polygon. Returns eOk if successful, or eInvalidInput if loop index is out of range.
	setNormal	Sets the WCS normal to the plane of this entity.
	setPattern	Sets the pattern data.
	setPatternAngle	Sets the pattern angle.
	setPatternColor	Sets the color information an OdCmColor instance.
	setPatternDouble	Sets the pattern double flag.
	setPatternScale	Sets the pattern scale.
	setPatternSpace	Sets the pattern spacing.
	subExplode	Breaks the polygon into a set of polylines.
	subSetDatabaseDefaults	Applies the default properties of the specified database to this entity.
	subTransformBy	This is subTransformBy, a member of class OdDbMPolygon.
	subWorldDraw	This is subWorldDraw, a member of class OdDbMPolygon.

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