axmol/chipmunk/src/cpSpatialIndex.c

#include <stdlib.h>

#include "chipmunk_private.h"

void
cpSpatialIndexFree(cpSpatialIndex *index)
{
    if(index){
        cpSpatialIndexDestroy(index);
        cpfree(index);
    }
}

cpSpatialIndex *
cpSpatialIndexInit(cpSpatialIndex *index, cpSpatialIndexClass *klass, cpSpatialIndexBBFunc bbfunc, cpSpatialIndex *staticIndex)
{
    index->klass = klass;
    index->bbfunc = bbfunc;
    index->staticIndex = staticIndex;
    
    if(staticIndex){
        cpAssertHard(!staticIndex->dynamicIndex, "This static index is already associated with a dynamic index.");
        staticIndex->dynamicIndex = index;
    }
    
    return index;
}

typedef struct dynamicToStaticContext {
    cpSpatialIndexBBFunc bbfunc;
    cpSpatialIndex *staticIndex;
    cpSpatialIndexQueryFunc queryFunc;
    void *data;
} dynamicToStaticContext;

static void
dynamicToStaticIter(void *obj, dynamicToStaticContext *context)
{
    cpSpatialIndexQuery(context->staticIndex, obj, context->bbfunc(obj), context->queryFunc, context->data);
}

void
cpSpatialIndexCollideStatic(cpSpatialIndex *dynamicIndex, cpSpatialIndex *staticIndex, cpSpatialIndexQueryFunc func, void *data)
{
    if(cpSpatialIndexCount(staticIndex) > 0){
        dynamicToStaticContext context = {dynamicIndex->bbfunc, staticIndex, func, data};
        cpSpatialIndexEach(dynamicIndex, (cpSpatialIndexIteratorFunc)dynamicToStaticIter, &context);
    }
}