paysages : Terrain painting improvements (WIP).

git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@551 b1fd45b6-86a6-48da-8261-f70d1f35bdcc
This commit is contained in:
Michaël Lemaire 2013-04-16 20:10:03 +00:00 committed by ThunderK
parent 3e14fedbca
commit 82d291d903
6 changed files with 320 additions and 306 deletions

View file

@ -1,22 +0,0 @@
#ifndef _PAYSAGES_ARRAY_H_
#define _PAYSAGES_ARRAY_H_
#include "shared/types.h"
#ifdef __cplusplus
extern "C" {
#endif
void arrayCreate(Array* array, int item_size);
void arrayDelete(Array* array);
void* arrayAppend(Array* array, void* item);
void arrayInsert(Array* array, void* item, int position);
void arrayReplace(Array* array, void* item, int position);
void arrayLStrip(Array* array, int count);
void arrayClear(Array* array);
#ifdef __cplusplus
}
#endif
#endif

View file

@ -10,15 +10,6 @@ extern "C" {
typedef struct Renderer Renderer;
typedef struct
{
int length;
int alloc_length;
int item_size;
int dirty;
void* data;
} Array;
typedef struct
{
int hit;

View file

@ -10,6 +10,226 @@
#include <math.h>
#include "../tools/memory.h"
#include "../tools.h"
#include "../tools/array.h"
typedef struct
{
int xstart;
int xend;
double* height;
} HeightMapPixelGroup;
typedef struct
{
int z;
int memsize;
int pixel_groups_count;
HeightMapPixelGroup* pixel_groups;
} HeightMapRow;
typedef struct
{
int memsize;
int rows_count;
HeightMapRow* rows;
} HeightMapData;
struct TerrainHeightMap
{
TerrainDefinition* terrain;
HeightMapData merged_data;
HeightMapData brush_data;
};
static void _initData(HeightMapData* data)
{
data->rows_count = 0;
data->rows = malloc(1);
}
static void _clearData(HeightMapData* data)
{
int i, j;
for (i = 0; i < data->rows_count; i++)
{
for (j = 0; j < data->rows[i].pixel_groups_count; j++)
{
free(data->rows[i].pixel_groups[j].height);
}
free(data->rows[i].pixel_groups);
}
data->rows_count = 0;
data->rows = realloc(data->rows, 1);
}
static void _deleteData(HeightMapData* data)
{
_clearData(data);
free(data->rows);
}
static void _copyData(HeightMapData* source, HeightMapData* destination)
{
_clearData(destination);
/* TODO */
}
static void _saveData(PackStream* stream, HeightMapData* data)
{
int i, j, k;
packWriteInt(stream, &data->rows_count);
for (i = 0; i < data->rows_count; i++)
{
packWriteInt(stream, &data->rows[i].z);
packWriteInt(stream, &data->rows[i].pixel_groups_count);
for (j = 0; j < data->rows[i].pixel_groups_count; j++)
{
packWriteInt(stream, &data->rows[i].pixel_groups[j].xstart);
packWriteInt(stream, &data->rows[i].pixel_groups[j].xend);
for (k = 0; k < data->rows[i].pixel_groups[j].xend - data->rows[i].pixel_groups[j].xstart; k++)
{
packWriteDouble(stream, &data->rows[i].pixel_groups[j].height[k]);
}
}
}
}
static void _loadData(PackStream* stream, HeightMapData* data)
{
int i, j, k, n;
_clearData(data);
packReadInt(stream, &data->rows_count);
data->rows = realloc(data->rows, sizeof(HeightMapRow) * data->rows_count);
for (i = 0; i < data->rows_count; i++)
{
packReadInt(stream, &data->rows[i].z);
packReadInt(stream, &data->rows[i].pixel_groups_count);
data->rows[i].pixel_groups = malloc(sizeof(HeightMapPixelGroup) * data->rows[i].pixel_groups_count);
for (j = 0; j < data->rows[i].pixel_groups_count; j++)
{
packReadInt(stream, &data->rows[i].pixel_groups[j].xstart);
packReadInt(stream, &data->rows[i].pixel_groups[j].xend);
n = data->rows[i].pixel_groups[j].xend - data->rows[i].pixel_groups[j].xstart;
data->rows[i].pixel_groups[j].height = malloc(sizeof(double) * n);
for (k = 0; k < n; k++)
{
packReadDouble(stream, &data->rows[i].pixel_groups[j].height[k]);
}
}
}
}
/*
* Get a pointer to the data in a heightmap, to a certain location.
* If the location is not already in the heightmap, it is initialized with the terrain height.
* This method will grow the heightmap as necessary (if 'grow' is set to false, NULL will be returned on missing pixels).
*/
static double* _getDataPointer(HeightMapData* data, int x, int z, TerrainDefinition* terrain, int grow)
{
int i;
/* Find row */
/* TODO Dichotomic search */
HeightMapRow* row;
i = 0;
while (i < data->rows_count && data->rows[i].z < z)
{
i++;
}
if (i < data->rows_count && data->rows[i].z == z)
{
row = data->rows + i;
}
else if (grow)
{
row = naiveArrayInsert((void**)&data->rows, sizeof(HeightMapRow), data->rows_count, i);
row->z = z;
row->pixel_groups_count = 0;
row->pixel_groups = malloc(1);
data->rows_count++;
}
else
{
return NULL;
}
/* Find pixel group */
HeightMapPixelGroup* pixel_group = NULL;
for (i = 0; i < row->pixel_groups_count; i++)
{
if (x < row->pixel_groups[i].xstart - 1)
{
break;
}
if (x >= row->pixel_groups[i].xstart - 1 && x <= row->pixel_groups[i].xend + 1)
{
pixel_group = row->pixel_groups + i;
}
}
/* Alter pixel group */
double* pixel;
int added = 1;
if (!pixel_group)
{
if (!grow)
{
return NULL;
}
/* Create the pixel group with one pixel */
pixel_group = naiveArrayInsert((void**)&row->pixel_groups, sizeof(HeightMapPixelGroup), row->pixel_groups_count, i);
pixel_group->xstart = x;
pixel_group->xend = x;
pixel_group->height = malloc(sizeof(double));
pixel = pixel_group->height;
row->pixel_groups_count++;
}
else if (x == pixel_group->xstart - 1)
{
if (!grow)
{
return NULL;
}
/* Extend the rowgroup at start */
pixel_group->xstart--;
pixel = naiveArrayInsert((void**)&pixel_group->height, sizeof(double), pixel_group->xend - pixel_group->xstart, 0);
}
else if (x == pixel_group->xend + 1)
{
if (!grow)
{
return NULL;
}
/* Extend the rowgroup at end */
pixel_group->xend++;
pixel = naiveArrayInsert((void**)&pixel_group->height, sizeof(double), pixel_group->xend - pixel_group->xstart, pixel_group->xend - pixel_group->xstart);
}
else
{
assert(x >= pixel_group->xstart);
assert(x <= pixel_group->xend);
pixel = pixel_group->height + x - pixel_group->xstart;
added = 0;
}
/* Reset pixel if it had been added */
if (added && terrain)
{
*pixel = terrainGetGridHeight(terrain, x, z, 0);
}
return pixel;
}
TerrainHeightMap* terrainHeightMapCreate(TerrainDefinition* terrain)
{
@ -17,134 +237,41 @@ TerrainHeightMap* terrainHeightMapCreate(TerrainDefinition* terrain)
result = malloc(sizeof(TerrainHeightMap));
result->terrain = terrain;
result->fixed_count = 0;
result->fixed_data = malloc(sizeof(TerrainHeightMapChunk));
result->floating_used = 0;
result->floating_data.data = malloc(sizeof(double));
_initData(&result->merged_data);
_initData(&result->brush_data);
return result;
}
void terrainHeightmapDelete(TerrainHeightMap* heightmap)
{
int i;
for (i = 0; i < heightmap->fixed_count; i++)
{
free(heightmap->fixed_data[i].data);
}
free(heightmap->fixed_data);
free(heightmap->floating_data.data);
_deleteData(&heightmap->merged_data);
_deleteData(&heightmap->brush_data);
free(heightmap);
}
static void _setFixedCount(TerrainHeightMap* heightmap, int new_count)
{
int old_count = heightmap->fixed_count;
int i;
if (new_count > old_count)
{
heightmap->fixed_data = realloc(heightmap->fixed_data, sizeof(TerrainHeightMapChunk) * new_count);
for (i = old_count; i < new_count; i++)
{
heightmap->fixed_data[i].data = malloc(sizeof(double));
}
}
else if (new_count < old_count)
{
for (i = new_count; i < old_count; i++)
{
free(heightmap->fixed_data[i].data);
}
if (new_count > 0)
{
heightmap->fixed_data = realloc(heightmap->fixed_data, sizeof(TerrainHeightMapChunk) * new_count);
}
}
heightmap->fixed_count = new_count;
}
void terrainHeightmapCopy(TerrainHeightMap* source, TerrainHeightMap* destination)
{
int i;
destination->terrain = source->terrain;
_setFixedCount(destination, source->fixed_count);
for (i = 0; i < destination->fixed_count; i++)
{
TerrainHeightMapChunk* chunk_source = source->fixed_data + i;
TerrainHeightMapChunk* chunk_destination = destination->fixed_data + i;
size_t mapsize = sizeof(double) * chunk_source->rect.xsize * chunk_source->rect.zsize;
chunk_destination->rect = chunk_source->rect;
if (chunk_source->rect.xsize * chunk_source->rect.zsize > 0)
{
chunk_destination->data = realloc(chunk_destination->data, mapsize);
memcpy(chunk_destination->data, chunk_source->data, mapsize);
}
}
destination->floating_used = 0;
_copyData(&source->merged_data, &destination->merged_data);
_clearData(&destination->brush_data);
}
void terrainHeightmapSave(PackStream* stream, TerrainHeightMap* heightmap)
{
int i, j;
packWriteInt(stream, &heightmap->fixed_count);
for (i = 0; i < heightmap->fixed_count; i++)
{
TerrainHeightMapChunk* chunk = heightmap->fixed_data + i;
packWriteInt(stream, &chunk->rect.xstart);
packWriteInt(stream, &chunk->rect.xend);
packWriteInt(stream, &chunk->rect.xsize);
packWriteInt(stream, &chunk->rect.zstart);
packWriteInt(stream, &chunk->rect.zend);
packWriteInt(stream, &chunk->rect.zsize);
for (j = 0; j < chunk->rect.xsize * chunk->rect.zsize; j++)
{
packWriteDouble(stream, &chunk->data[j]);
}
}
_saveData(stream, &heightmap->merged_data);
}
void terrainHeightmapLoad(PackStream* stream, TerrainHeightMap* heightmap)
{
int new_count, i, j;
packReadInt(stream, &new_count);
_setFixedCount(heightmap, new_count);
for (i = 0; i < heightmap->fixed_count; i++)
{
TerrainHeightMapChunk* chunk = heightmap->fixed_data + i;
packReadInt(stream, &chunk->rect.xstart);
packReadInt(stream, &chunk->rect.xend);
packReadInt(stream, &chunk->rect.xsize);
packReadInt(stream, &chunk->rect.zstart);
packReadInt(stream, &chunk->rect.zend);
packReadInt(stream, &chunk->rect.zsize);
if (chunk->rect.xsize * chunk->rect.zsize > 0)
{
chunk->data = realloc(chunk->data, sizeof(double) * chunk->rect.xsize * chunk->rect.zsize);
}
for (j = 0; j < chunk->rect.xsize * chunk->rect.zsize; j++)
{
packReadDouble(stream, &chunk->data[j]);
}
}
heightmap->floating_used = 0;
_loadData(stream, &heightmap->merged_data);
_clearData(&heightmap->brush_data);
}
static inline int _checkDataHit(TerrainHeightMapChunk* chunk, double x, double z, double* result)
static inline int _getInterpolatedValue(HeightMapData* data, double x, double z, double* result, TerrainDefinition* terrain)
{
if ((int)floor(x) >= chunk->rect.xstart && (int)floor(x) <= chunk->rect.xend && (int)floor(z) >= (double)chunk->rect.zstart && (int)floor(z) <= (double)chunk->rect.zend)
/*if ((int)floor(x) >= chunk->rect.xstart && (int)floor(x) <= chunk->rect.xend && (int)floor(z) >= (double)chunk->rect.zstart && (int)floor(z) <= (double)chunk->rect.zend)
{
double stencil[16];
int ix, iz, cx, cz;
@ -171,62 +298,24 @@ static inline int _checkDataHit(TerrainHeightMapChunk* chunk, double x, double z
}
}
*result = toolsBicubicInterpolate(stencil, x - (double)xlow, z - (double)zlow);
if (result)
{
*result = toolsBicubicInterpolate(stencil, x - (double)xlow, z - (double)zlow);
}
return 1;
}
else
{
return 0;
}
}*/
return 0;
}
int terrainHeightmapGetHeight(TerrainHeightMap* heightmap, double x, double z, double* result)
{
int i;
if (heightmap->floating_used && _checkDataHit(&heightmap->floating_data, x, z, result))
{
return 1;
}
else
{
for (i = heightmap->fixed_count - 1; i >= 0; i--)
{
if (_checkDataHit(heightmap->fixed_data + i, x, z, result))
{
return 1;
}
}
return 0;
}
}
static inline void _resetRect(TerrainHeightMap* heightmap, int x1, int x2, int z1, int z2)
{
int i, x, z;
double result;
for (x = x1; x <= x2; x++)
{
for (z = z1; z <= z2; z++)
{
/* Search for a previous fixed chunk */
for (i = heightmap->fixed_count - 1; i >= 0; i--)
{
if (_checkDataHit(heightmap->fixed_data + i, x + heightmap->floating_data.rect.xstart, z + heightmap->floating_data.rect.zstart, &result))
{
heightmap->floating_data.data[z * heightmap->floating_data.rect.xsize + x] = result;
break;
}
}
if (i < 0)
{
/* No fixed chunk found */
heightmap->floating_data.data[z * heightmap->floating_data.rect.xsize + x] = terrainGetGridHeight(heightmap->terrain, x + heightmap->floating_data.rect.xstart, z + heightmap->floating_data.rect.zstart, 0);
}
}
}
/* TODO */
return 0;
}
static inline IntegerRect _getBrushRect(TerrainBrush* brush)
@ -250,90 +339,27 @@ static inline int _isInRect(IntegerRect rect, int x, int z)
return (x >= rect.xstart && x <= rect.xend && z >= rect.zstart && z <= rect.zend);
}
static void _prepareBrushStroke(TerrainHeightMap* heightmap, TerrainBrush* brush)
{
IntegerRect brush_rect = _getBrushRect(brush);
/* Prepare floating data */
if (heightmap->floating_used)
{
int gx1 = (brush_rect.xstart < heightmap->floating_data.rect.xstart) ? heightmap->floating_data.rect.xstart - brush_rect.xstart : 0;
int gx2 = (brush_rect.xend > heightmap->floating_data.rect.xend) ? brush_rect.xend - heightmap->floating_data.rect.xend : 0;
int gz1 = (brush_rect.zstart < heightmap->floating_data.rect.zstart) ? heightmap->floating_data.rect.zstart - brush_rect.zstart : 0;
int gz2 = (brush_rect.zend > heightmap->floating_data.rect.zend) ? brush_rect.zend - heightmap->floating_data.rect.zend : 0;
if (gx1 || gx2 || gz1 || gz2)
{
/* Floating area needs growing */
int new_width = heightmap->floating_data.rect.xsize + gx1 + gx2;
int new_height = heightmap->floating_data.rect.zsize + gz1 + gz2;
heightmap->floating_data.data = memory2dRealloc(heightmap->floating_data.data, sizeof(double), heightmap->floating_data.rect.xsize, heightmap->floating_data.rect.zsize, new_width, new_height, gx1, gz1);
heightmap->floating_data.rect.xstart -= gx1;
heightmap->floating_data.rect.xend += gx2;
heightmap->floating_data.rect.xsize += gx1 + gx2;
heightmap->floating_data.rect.zstart -= gz1;
heightmap->floating_data.rect.zend += gz2;
heightmap->floating_data.rect.zsize += gz1 + gz2;
_resetRect(heightmap, 0, new_width - 1, 0, gz1 - 1);
_resetRect(heightmap, 0, new_width - 1, new_height - gz2, new_height - 1);
_resetRect(heightmap, 0, gx1 - 1, gz1, new_height - 1 - gz2);
_resetRect(heightmap, new_width - gx2, new_width - 1, gz1, new_height - 1 - gz2);
}
}
else
{
/* Init floating area */
heightmap->floating_data.rect = brush_rect;
size_t new_size;
new_size = sizeof(double) * brush_rect.xsize * brush_rect.zsize;
heightmap->floating_data.data = realloc(heightmap->floating_data.data, new_size);
_resetRect(heightmap, 0, brush_rect.xsize - 1, 0, brush_rect.zsize - 1);
heightmap->floating_used = 1;
}
}
size_t terrainGetMemoryStats(TerrainDefinition* definition)
{
TerrainHeightMap* heightmap = definition->height_map;
size_t result = 0;
int i;
if (heightmap->floating_used)
/*if (heightmap->floating_used)
{
result += sizeof(double) * heightmap->floating_data.rect.xsize * heightmap->floating_data.rect.zsize;
}
for (i = 0; i < heightmap->fixed_count; i++)
{
result += sizeof(double) * heightmap->fixed_data[i].rect.xsize * heightmap->fixed_data[i].rect.zsize;
}
}*/
return result;
}
int terrainIsPainted(TerrainHeightMap* heightmap, int x, int z)
{
int i;
if (heightmap->floating_used && _isInRect(heightmap->floating_data.rect, x, z))
{
return 1;
}
else
{
for (i = 0; i < heightmap->fixed_count; i++)
{
if (_isInRect(heightmap->fixed_data[i].rect, x, z))
{
return 1;
}
}
return 0;
}
return _getDataPointer(&heightmap->brush_data, x, z, NULL, 0) || _getDataPointer(&heightmap->merged_data, x, z, NULL, 0);
}
typedef double (*BrushCallback)(TerrainHeightMap* heightmap, TerrainBrush* brush, double x, double z, double basevalue, double influence, double force, void* data);
@ -344,42 +370,32 @@ static inline void _applyBrush(TerrainHeightMap* heightmap, TerrainBrush* brush,
int x, z;
double dx, dz, distance, influence;
if (!heightmap->floating_used)
{
return;
}
for (x = brush_rect.xstart; x <= brush_rect.xend; x++)
{
dx = (double)x;
for (z = brush_rect.zstart; z <= brush_rect.zend; z++)
{
if (_isInRect(heightmap->floating_data.rect, x, z)) /* TODO Rect intersection */
{
dz = (double)z;
distance = sqrt((brush->relative_x - dx) * (brush->relative_x - dx) + (brush->relative_z - dz) * (brush->relative_z - dz));
dz = (double)z;
distance = sqrt((brush->relative_x - dx) * (brush->relative_x - dx) + (brush->relative_z - dz) * (brush->relative_z - dz));
if (distance > brush->hard_radius)
if (distance > brush->hard_radius)
{
if (distance <= brush->hard_radius + brush->smoothed_size)
{
if (distance <= brush->hard_radius + brush->smoothed_size)
{
influence = (1.0 - (distance - brush->hard_radius) / brush->smoothed_size);
}
else
{
continue;
}
influence = (1.0 - (distance - brush->hard_radius) / brush->smoothed_size);
}
else
{
influence = 1.0;
continue;
}
int ix = x - heightmap->floating_data.rect.xstart;
int iz = z - heightmap->floating_data.rect.zstart;
double base_value = heightmap->floating_data.data[iz * heightmap->floating_data.rect.xsize + ix];
heightmap->floating_data.data[iz * heightmap->floating_data.rect.xsize + ix] = callback(heightmap, brush, dx, dz, base_value, influence, force, data);
}
else
{
influence = 1.0;
}
double* dpointer = _getDataPointer(&heightmap->brush_data, x, z, heightmap->terrain, 1);
*dpointer = callback(heightmap, brush, dx, dz, *dpointer, influence, force, data);
}
}
}
@ -387,18 +403,23 @@ static inline void _applyBrush(TerrainHeightMap* heightmap, TerrainBrush* brush,
static double _applyBrushElevation(TerrainHeightMap* heightmap, TerrainBrush* brush, double x, double z, double basevalue, double influence, double force, void* data)
{
UNUSED(heightmap);
UNUSED(brush);
UNUSED(data);
UNUSED(x);
UNUSED(z);
return basevalue + influence * force;
}
void terrainBrushElevation(TerrainHeightMap* heightmap, TerrainBrush* brush, double value)
{
_prepareBrushStroke(heightmap, brush);
_applyBrush(heightmap, brush, value, NULL, _applyBrushElevation);
}
static double _applyBrushSmooth(TerrainHeightMap* heightmap, TerrainBrush* brush, double x, double z, double basevalue, double influence, double force, void* data)
{
UNUSED(data);
double ideal, factor;
ideal = terrainGetInterpolatedHeight(heightmap->terrain, x + brush->total_radius * 0.5, z, 1);
ideal += terrainGetInterpolatedHeight(heightmap->terrain, x - brush->total_radius * 0.5, z, 1);
@ -415,19 +436,18 @@ static double _applyBrushSmooth(TerrainHeightMap* heightmap, TerrainBrush* brush
void terrainBrushSmooth(TerrainHeightMap* heightmap, TerrainBrush* brush, double value)
{
_prepareBrushStroke(heightmap, brush);
_applyBrush(heightmap, brush, value, NULL, _applyBrushSmooth);
}
static double _applyBrushAddNoise(TerrainHeightMap* heightmap, TerrainBrush* brush, double x, double z, double basevalue, double influence, double force, void* data)
{
UNUSED(heightmap);
return basevalue + noiseGet2DTotal((NoiseGenerator*)data, x / brush->total_radius, z / brush->total_radius) * influence * force * brush->total_radius;
}
void terrainBrushAddNoise(TerrainHeightMap* heightmap, TerrainBrush* brush, NoiseGenerator* generator, double value)
{
_prepareBrushStroke(heightmap, brush);
_applyBrush(heightmap, brush, value, generator, _applyBrushAddNoise);
}
@ -442,26 +462,10 @@ static double _applyBrushReset(TerrainHeightMap* heightmap, TerrainBrush* brush,
void terrainBrushReset(TerrainHeightMap* heightmap, TerrainBrush* brush, double value)
{
_prepareBrushStroke(heightmap, brush);
_applyBrush(heightmap, brush, value, NULL, _applyBrushReset);
}
void terrainEndBrushStroke(TerrainHeightMap* heightmap)
{
/* Commit floating data to fixed */
if (heightmap->floating_used)
{
/* TODO Find overlapping data and merge with them */
size_t mapsize = sizeof(double) * heightmap->floating_data.rect.xsize * heightmap->floating_data.rect.zsize;
heightmap->fixed_data = realloc(heightmap->fixed_data, sizeof(TerrainHeightMapChunk) * (heightmap->fixed_count + 1));
heightmap->fixed_data[heightmap->fixed_count].rect = heightmap->floating_data.rect;
heightmap->fixed_data[heightmap->fixed_count].data = malloc(mapsize);
memcpy(heightmap->fixed_data[heightmap->fixed_count].data, heightmap->floating_data.data, mapsize);
heightmap->fixed_count++;
heightmap->floating_used = 0;
heightmap->floating_data.data = realloc(heightmap->floating_data.data, sizeof(double));
}
/* TODO Merge data */
}

View file

@ -13,21 +13,6 @@ typedef struct
int zsize;
} IntegerRect;
typedef struct
{
IntegerRect rect;
double* data;
} TerrainHeightMapChunk;
struct TerrainHeightMap
{
TerrainDefinition* terrain;
int fixed_count;
TerrainHeightMapChunk* fixed_data;
int floating_used;
TerrainHeightMapChunk floating_data;
};
TerrainHeightMap* terrainHeightMapCreate(TerrainDefinition* definition);
void terrainHeightmapDelete(TerrainHeightMap* heightmap);
void terrainHeightmapCopy(TerrainHeightMap* source, TerrainHeightMap* destination);

View file

@ -1,8 +1,23 @@
#include "array.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
void* naiveArrayInsert(void** array, size_t item_size, int item_count, int location)
{
assert(location >= 0);
assert(location <= item_count);
*array = realloc(*array, item_size * (item_count + 1));
if (location < item_count)
{
memmove(*array + item_size * (location + 1), *array + item_size * location, item_size * (item_count - location));
}
return *array + item_size * location;
}
void arrayCreate(Array* array, int item_size)
{
array->length = 0;

View file

@ -0,0 +1,41 @@
#ifndef _PAYSAGES_TOOLS_ARRAY_H_
#define _PAYSAGES_TOOLS_ARRAY_H_
#include "../shared/types.h"
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
/**************** Naive methods (basic C arrays) ****************/
/*
* Insert an item at a given position, rallocating the array, moving data and returning a pointer to the inserted element.
*/
void* naiveArrayInsert(void** array, size_t item_size, int item_count, int location);
/**************** Array object ****************/
typedef struct
{
int length;
int alloc_length;
int item_size;
int dirty;
void* data;
} Array;
void arrayCreate(Array* array, int item_size);
void arrayDelete(Array* array);
void* arrayAppend(Array* array, void* item);
void arrayInsert(Array* array, void* item, int position);
void arrayReplace(Array* array, void* item, int position);
void arrayLStrip(Array* array, int count);
void arrayClear(Array* array);
#ifdef __cplusplus
}
#endif
#endif