mirror of https://github.com/axmolengine/axmol.git
149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
/* Copyright (c) 2007 Scott Lembcke
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef CHIPMUNK_HEADER
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#define CHIPMUNK_HEADER
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#ifdef __cplusplus
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extern "C" {
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#endif
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void cpMessage(char *message, char *condition, char *file, int line, int isError);
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#ifdef NDEBUG
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#define cpAssertWarn(condition, message)
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#else
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#define cpAssertWarn(condition, message) if(!(condition)) cpMessage(message, #condition, __FILE__, __LINE__, 0)
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#endif
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#ifdef NDEBUG
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#define cpAssert(condition, message)
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#else
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#define cpAssert(condition, message) if(!(condition)) cpMessage(message, #condition, __FILE__, __LINE__, 1)
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#endif
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#include "chipmunk_types.h"
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static inline cpFloat
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cpfmax(cpFloat a, cpFloat b)
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{
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return (a > b) ? a : b;
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}
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static inline cpFloat
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cpfmin(cpFloat a, cpFloat b)
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{
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return (a < b) ? a : b;
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}
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static inline cpFloat
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cpfabs(cpFloat n)
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{
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return (n < 0) ? -n : n;
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}
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static inline cpFloat
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cpfclamp(cpFloat f, cpFloat min, cpFloat max)
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{
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return cpfmin(cpfmax(f, min), max);
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}
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static inline cpFloat
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cpflerp(cpFloat f1, cpFloat f2, cpFloat t)
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{
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return f1*(1.0f - t) + f2*t;
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}
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static inline cpFloat
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cpflerpconst(cpFloat f1, cpFloat f2, cpFloat d)
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{
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return f1 + cpfclamp(f2 - f1, -d, d);
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}
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#ifndef INFINITY
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#ifdef _MSC_VER
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union MSVC_EVIL_FLOAT_HACK
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{
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unsigned __int8 Bytes[4];
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float Value;
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};
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static union MSVC_EVIL_FLOAT_HACK INFINITY_HACK = {{0x00, 0x00, 0x80, 0x7F}};
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#define INFINITY (INFINITY_HACK.Value)
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#endif
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#ifdef __GNUC__
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#define INFINITY (__builtin_inf())
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#endif
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#ifndef INFINITY
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#define INFINITY (1e1000)
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#endif
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#endif
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// Maximum allocated size for various Chipmunk buffer sizes
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#define CP_BUFFER_BYTES (32*1024)
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#define cpmalloc malloc
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#define cpcalloc calloc
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#define cprealloc realloc
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#define cpfree free
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#include "cpVect.h"
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#include "cpBB.h"
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#include "cpBody.h"
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#include "cpArray.h"
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#include "cpHashSet.h"
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#include "cpSpaceHash.h"
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#include "cpShape.h"
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#include "cpPolyShape.h"
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#include "cpArbiter.h"
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#include "cpCollision.h"
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#include "constraints/cpConstraint.h"
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#include "cpSpace.h"
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#define CP_HASH_COEF (3344921057ul)
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#define CP_HASH_PAIR(A, B) ((cpHashValue)(A)*CP_HASH_COEF ^ (cpHashValue)(B)*CP_HASH_COEF)
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extern char *cpVersionString;
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void cpInitChipmunk(void);
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// Calculate the moment of inertia for a circle, r1 and r2 are the inner and outer diameters.
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// (A solid circle has an inner diameter of 0)
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cpFloat cpMomentForCircle(cpFloat m, cpFloat r1, cpFloat r2, cpVect offset);
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// Calculate the moment of inertia for a line segment. (beveling radius not supported)
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cpFloat cpMomentForSegment(cpFloat m, cpVect a, cpVect b);
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// Calculate the moment of inertia for a solid polygon shape.
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cpFloat cpMomentForPoly(cpFloat m, int numVerts, cpVect *verts, cpVect offset);
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// Calculate the moment of inertia for a solid box.
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cpFloat cpMomentForBox(cpFloat m, cpFloat width, cpFloat height);
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#ifdef __cplusplus
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}
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#endif
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#endif
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