RecastFilter.cpp File Reference

#include "Recast/Recast.h"
#include "Recast/RecastAssert.h"

Macros
#define	_USE_MATH_DEFINES

Functions
void	rcFilterLowHangingWalkableObstacles (rcContext *ctx, const int walkableClimb, rcHeightfield &solid)
void	rcFilterLedgeSpansImp (rcContext *ctx, const int walkableHeight, const int walkableClimb, const rcNeighborSlopeFilterMode neighborSlopeFilterMode, const rcReal maxStepFromWalkableSlope, const rcReal ch, const int filterLedgeSpansAtY, rcHeightfield &solid)
void	rcFilterLedgeSpans (rcContext *ctx, const int walkableHeight, const int walkableClimb, const rcNeighborSlopeFilterMode neighborSlopeFilterMode, const rcReal maxStepFromWalkableSlope, const rcReal ch, rcHeightfield &solid)
void	rcFilterLedgeSpans (rcContext *ctx, const int walkableHeight, const int walkableClimb, const rcNeighborSlopeFilterMode neighborSlopeFilterMode, const rcReal maxStepFromWalkableSlope, const rcReal ch, const int yStart, const int maxYProcess, rcHeightfield &solid)
void	rcFilterWalkableLowHeightSpans (rcContext *ctx, int walkableHeight, rcHeightfield &solid)
void	rcFilterWalkableLowHeightSpansSequences (rcContext *ctx, int walkableHeight, rcHeightfield &solid)

Macro Definition Documentation

_USE_MATH_DEFINES

#define _USE_MATH_DEFINES

Function Documentation

rcFilterLedgeSpans() [1/2]

void rcFilterLedgeSpans	(	rcContext *	ctx,
		const int	walkableHeight,
		const int	walkableClimb,
		const rcNeighborSlopeFilterMode	neighborSlopeFilterMode,
		const rcReal	maxStepFromWalkableSlope,
		const rcReal	ch,
		const int	yStart,
		const int	maxYProcess,
		rcHeightfield &	solid
	)

See also

rcHeightfield, rcConfig

rcFilterLedgeSpans() [2/2]

void rcFilterLedgeSpans	(	rcContext *	ctx,
		const int	walkableHeight,
		const int	walkableClimb,
		const rcNeighborSlopeFilterMode	neighborSlopeFilterMode,
		const rcReal	maxStepFromWalkableSlope,
		const rcReal	ch,
		rcHeightfield &	solid
	)

A ledge is a span with one or more neighbors whose maximum is further away than walkableClimb from the current span's maximum. This method removes the impact of the overestimation of conservative voxelization so the resulting mesh will not have regions hanging in the air over ledges.

A span is a ledge if: rcAbs(currentSpan.smax - neighborSpan.smax) > walkableClimb

See also

rcHeightfield, rcConfig

rcFilterLedgeSpansImp()

void rcFilterLedgeSpansImp	(	rcContext *	ctx,
		const int	walkableHeight,
		const int	walkableClimb,
		const rcNeighborSlopeFilterMode	neighborSlopeFilterMode,
		const rcReal	maxStepFromWalkableSlope,
		const rcReal	ch,
		const int	filterLedgeSpansAtY,
		rcHeightfield &	solid
	)

rcFilterLowHangingWalkableObstacles()

void rcFilterLowHangingWalkableObstacles	(	rcContext *	ctx,
		const int	walkableClimb,
		rcHeightfield &	solid
	)

Allows the formation of walkable regions that will flow over low lying objects such as curbs, and up structures such as stairways.

Two neighboring spans are walkable if: rcAbs(currentSpan.smax - neighborSpan.smax) < waklableClimb

Warning

Will override the effect of rcFilterLedgeSpans. So if both filters are used, call rcFilterLedgeSpans after calling this filter.

See also

rcHeightfield, rcConfig

rcFilterWalkableLowHeightSpans()

void rcFilterWalkableLowHeightSpans	(	rcContext *	ctx,
		int	walkableHeight,
		rcHeightfield &	solid
	)

For this filter, the clearance above the span is the distance from the span's maximum to the next higher span's minimum. (Same grid column.)

See also

rcHeightfield, rcConfig

rcFilterWalkableLowHeightSpansSequences()

void rcFilterWalkableLowHeightSpansSequences	(	rcContext *	ctx,
		int	walkableHeight,
		rcHeightfield &	solid
	)