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/******************************************************************************
* Spine Runtimes License Agreement
* Last updated September 24, 2021. Replaces all prior versions.
*
* Copyright (c) 2013-2021, Esoteric Software LLC
*
* Integration of the Spine Runtimes into software or otherwise creating
* derivative works of the Spine Runtimes is permitted under the terms and
* conditions of Section 2 of the Spine Editor License Agreement:
* http://esotericsoftware.com/spine-editor-license
*
* Otherwise, it is permitted to integrate the Spine Runtimes into software
* or otherwise create derivative works of the Spine Runtimes (collectively,
* "Products"), provided that each user of the Products must obtain their own
* Spine Editor license and redistribution of the Products in any form must
* include this license and copyright notice.
*
* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#include <spine/extension.h>
#include <stdio.h>
float _spInternalRandom() {
return rand() / (float) RAND_MAX;
}
static void *(*mallocFunc)(size_t size) = malloc;
static void *(*reallocFunc)(void *ptr, size_t size) = realloc;
static void *(*debugMallocFunc)(size_t size, const char *file, int line) = NULL;
static void (*freeFunc)(void *ptr) = free;
static float (*randomFunc)() = _spInternalRandom;
void *_spMalloc(size_t size, const char *file, int line) {
if (debugMallocFunc)
return debugMallocFunc(size, file, line);
return mallocFunc(size);
}
void *_spCalloc(size_t num, size_t size, const char *file, int line) {
void *ptr = _spMalloc(num * size, file, line);
if (ptr) memset(ptr, 0, num * size);
return ptr;
}
void *_spRealloc(void *ptr, size_t size) {
return reallocFunc(ptr, size);
}
void _spFree(void *ptr) {
freeFunc(ptr);
}
float _spRandom() {
return randomFunc();
}
void _spSetDebugMalloc(void *(*malloc)(size_t size, const char *file, int line)) {
debugMallocFunc = malloc;
}
void _spSetMalloc(void *(*malloc)(size_t size)) {
mallocFunc = malloc;
}
void _spSetRealloc(void *(*realloc)(void *ptr, size_t size)) {
reallocFunc = realloc;
}
void _spSetFree(void (*free)(void *ptr)) {
freeFunc = free;
}
void _spSetRandom(float (*random)()) {
randomFunc = random;
}
char *_spReadFile(const char *path, int *length) {
char *data;
size_t result;
FILE *file = fopen(path, "rb");
if (!file) return 0;
fseek(file, 0, SEEK_END);
*length = (int) ftell(file);
fseek(file, 0, SEEK_SET);
data = MALLOC(char, *length);
result = fread(data, 1, *length, file);
UNUSED(result);
fclose(file);
return data;
}
float _spMath_random(float min, float max) {
return min + (max - min) * _spRandom();
}
float _spMath_randomTriangular(float min, float max) {
return _spMath_randomTriangularWith(min, max, (min + max) * 0.5f);
}
float _spMath_randomTriangularWith(float min, float max, float mode) {
float u = _spRandom();
float d = max - min;
if (u <= (mode - min) / d) return min + SQRT(u * d * (mode - min));
return max - SQRT((1 - u) * d * (max - mode));
}
float _spMath_interpolate(float (*apply)(float a), float start, float end, float a) {
return start + (end - start) * apply(a);
}
float _spMath_pow2_apply(float a) {
if (a <= 0.5) return POW(a * 2, 2) / 2;
return POW((a - 1) * 2, 2) / -2 + 1;
}
float _spMath_pow2out_apply(float a) {
return POW(a - 1, 2) * -1 + 1;
}