A tile cache enables an efficient means of updating a large deformable terrain. More...
#import <ChipmunkTileCache.h>
Inherited by ChipmunkBasicTileCache.
Public Member Functions | |
| (id) | - initWithSampler:space:tileSize:samplesPerTile:cacheSize: |
| Create the cache from the given sampler, space to add the generated segments to, size of the tiles, and the number of samples for each tile. | |
| (void) | - resetCache |
| Clear out all the cached tiles to force a full regen. | |
| (void) | - markDirtyRect: |
| Mark a region as needing an update. | |
| (void) | - ensureRect: |
| Ensure that the given rect has been fully generated and contains no dirty rects. | |
| (cpPolyline) | - simplify: |
| Override this in a subclass to make custom polygon simplification behavior. | |
| (ChipmunkSegmentShape *) | - makeSegmentFor:from:to: |
| Override this method to construct the segment shapes. | |
Properties | |
| bool | marchHard |
| Should the marching be hard or soft? See cpMarchHard() and cpMarchSoft() for more information. | |
| cpVect | tileOffset |
| Offset of the tile grid origin. | |
| ChipmunkAbstractSampler * | sampler |
| The sampling function to use. | |
A tile cache enables an efficient means of updating a large deformable terrain.
General usage would be to pass a rectangle covering the viewport to ensureRect: and calling markDirtyRect: each time a change is made that requires an area to be resampled.
| - (id) initWithSampler: | (ChipmunkAbstractSampler *) | sampler | ||
| space: | (ChipmunkSpace *) | space | ||
| tileSize: | (cpFloat) | tileSize | ||
| samplesPerTile: | (NSUInteger) | samplesPerTile | ||
| cacheSize: | (NSUInteger) | cacheSize | ||
Create the cache from the given sampler, space to add the generated segments to, size of the tiles, and the number of samples for each tile.
| - (ChipmunkSegmentShape *) makeSegmentFor: | (ChipmunkBody *) | staticBody | ||
| from: | (cpVect) | a | ||
| to: | (cpVect) | b | ||
Override this method to construct the segment shapes.
By default, it creates a 0 radius segment and sets 1.0 for friction and elasticity and nothing else.
| - (void) markDirtyRect: | (cpBB) | bounds |
Mark a region as needing an update.
Geometry is not regenerated until ensureRect: is called.
| - (cpPolyline) simplify: | (cpPolyline) | polyline |
Override this in a subclass to make custom polygon simplification behavior.
Defaults to cpPolylineSimplifyCurves(polyline, 2.0f)
- (bool) marchHard [read, write, assign] |
Should the marching be hard or soft? See cpMarchHard() and cpMarchSoft() for more information.
1.7.1
