JCS-Prod/RSE-Terrain
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Added OBJ exporter

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This commit is contained in:
JackCarterSmith 2022-08-03 19:46:57 +02:00
parent a7bf7303ef
commit 1b3e5e5a0a
Signed by: JackCarterSmith
GPG Key ID: 832E52F4E23F8F24
7 changed files with 163 additions and 48 deletions
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5
CMakeLists.txt
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@ -3,12 +3,13 @@
# Written by JackCarterSmith, 2021
# This code is released under the RSE license.
cmake_minimum_required(VERSION 3.1)
cmake_policy(VERSION 3.1)
cmake_minimum_required(VERSION 3.12)
cmake_policy(VERSION 3.12)
set(CMAKE_MODULE_PATH ${CMAKE_BINARY_DIR})
# define project
add_definitions(-DCONF_NO_GL)
#add_definitions(-DNO_PNG_SUPPORT)
if(DEFINED ENV{CI})
project(rse-map VERSION $ENV{CI_VERSION}.$ENV{CI_BUILD_NUMBER} DESCRIPTION "RogueSquadron Extractor - Map" LANGUAGES C)
set(RSE_MAP_NAME $ENV{CI_OUTPUT_NAME}-${PROJECT_VERSION})

24
src/Terrain-Extractor.c
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@ -81,18 +81,17 @@ static unsigned int mainProcess(int args_cnt, char* args_value[], T_PROG_OPTIONS
if (p_opts->output_dir) createSubDir(args_value[file_index]);
#ifndef NO_PNG_SUPPORT
if (exportHeightmapPNG(terrainStruct, args_value[file_index], p_opts) != NO_ERROR)
printf("[ERR] Failed to export heightmap to PNG format!\n");
else
printf("[INFO] Successfully exported heightmap to PNG format.\n");
/*
for ( i = 0; i < hobStruct->obj_count; i++ ) {
if (exportOBJModel(&(hobStruct->objects[i]), args_value[file_index], p_opts) != NO_ERROR)
printf("[ERR] Failed to export %s object in OBJ format!\n", hobStruct->objects[i].name);
else
printf("[INFO] Successfully exported %s object in OBJ format.\n", hobStruct->objects[i].name);
}
*/
#endif
if (exportHeightmapOBJ(terrainStruct, args_value[file_index], p_opts) != NO_ERROR)
printf("[ERR] Failed to export terrain in OBJ format!\n");
else
printf("[INFO] Successfully exported terrain in OBJ format.\n");
cleanUpResources(terrainStruct);
}
@ -106,7 +105,6 @@ static unsigned char checkInputArgs(T_PROG_OPTIONS* opt_ptr, int p_arg_nbr, char
// Set default options
opt_ptr->raw = 0;
opt_ptr->output_dir = 1;
if (p_arg_nbr > 1) {
for ( i = 1; i < p_arg_nbr; i++) {
@ -124,9 +122,9 @@ static unsigned char checkInputArgs(T_PROG_OPTIONS* opt_ptr, int p_arg_nbr, char
} else if (strcmp(p_args[i], "-vvv") == 0) {
opt_ptr->god_mode = 1;
printf("[OPTN] God damn it!\n");
} else if (strcmp(p_args[i], "-no-subdir") == 0) {
} else if (strcmp(p_args[i], "-subdir") == 0) {
opt_ptr->output_dir = 0;
printf("[OPTN] Export to current directory.\n");
printf("[OPTN] Export to sub-directory.\n");
} else if (strcmp(p_args[i], "-neg") == 0) {
opt_ptr->neg_heightmap = 1;
printf("[OPTN] Negative heightmap output mode.\n");
@ -158,8 +156,8 @@ static void createSubDir(char *dirName) {
static void dispHelp() {
printf("\n");
printf("Options:\n -h Print this message\n");
printf(" -v -vv Activate verbose console output\n");
printf(" -no-subdir Export models inside current folder\n");
printf(" -v -vv Activate verbose console output\n");
printf(" -subdir Export output to a sub-directory\n");
printf(" -neg Negative heightmap output\n");
printf("\n");
printf("Usage: RSE-Terrain_%s [options] <hmp_file>\n", VERSION);

109
src/hmp_export.c
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@ -1,6 +1,6 @@
/**
* \file hmp_export.c
* \date 31/07/2022
* \date 02/08/2022
* \author JackCarterSmith
* \copyright GPL-v3.0
* \brief Export datas to heightmap PNG and Waveform OBJ format.
@ -9,21 +9,25 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifndef NO_PNG_SUPPORT
#include <zlib.h>
#include <png.h>
#endif
#include "rlk/obj.h"
#include "errors_types.h"
#include "options.h"
#include "hmp_struct.h"
#include "hmp_export.h"
#ifndef NO_PNG_SUPPORT
unsigned char exportHeightmapPNG(const T_TERRAIN* terrain, const char *out_path, T_PROG_OPTIONS* p_opts) {
if (out_path == NULL || terrain == NULL) return ERROR_ARGS_NULL;
char export_path[128];
FILE *_png_f = NULL;
png_structp png_ptr = NULL;
png_infop info_ptr = NULL;
size_t x,y;
size_t x,z;
png_byte **row_ptrs = NULL;
//int pixel_size = 3;
//int depth = 8; //bit par color channel (RGB)
@ -54,25 +58,17 @@ unsigned char exportHeightmapPNG(const T_TERRAIN* terrain, const char *out_path,
}
// Set image attributes
png_set_IHDR(png_ptr, info_ptr, terrain->width * TILE_HEIGHT_TUNE, terrain->height * TILE_HEIGHT_TUNE, 8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
png_set_IHDR(png_ptr, info_ptr, terrain->width * TERRAIN_TILE_SAMPLING, terrain->height * TERRAIN_TILE_SAMPLING, 8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
// Store PNG datas
row_ptrs = png_malloc(png_ptr, terrain->height * TILE_HEIGHT_TUNE * sizeof(png_byte *));
for ( y = 0; y < terrain->height * TILE_HEIGHT_TUNE; y++ ) {
png_byte *row = png_malloc(png_ptr, terrain->width * TILE_HEIGHT_TUNE * sizeof(unsigned char) * 3);
row_ptrs[y] = row;
for ( x = 0; x < terrain->width * TILE_HEIGHT_TUNE; x++ ) {
// Invert Y to display 0,0 origin at bottom left of image
*row++ = terrain->heightmap[x][terrain->height * TILE_HEIGHT_TUNE - 1 - y];
*row++ = terrain->heightmap[x][terrain->height * TILE_HEIGHT_TUNE - 1 - y];
*row++ = terrain->heightmap[x][terrain->height * TILE_HEIGHT_TUNE - 1 - y];
// Normal one struc
/*
*row++ = terrain->heightmap[x][y];
*row++ = terrain->heightmap[x][y];
*row++ = terrain->heightmap[x][y];
*/
row_ptrs = png_malloc(png_ptr, terrain->height * TERRAIN_TILE_SAMPLING * sizeof(png_byte *));
for ( z = 0; z < terrain->height * TERRAIN_TILE_SAMPLING; z++ ) {
png_byte *row = png_malloc(png_ptr, terrain->width * TERRAIN_TILE_SAMPLING * sizeof(unsigned char) * 3);
row_ptrs[z] = row;
for ( x = 0; x < terrain->width * TERRAIN_TILE_SAMPLING; x++ ) {
*row++ = terrain->heightmap[x][z];
*row++ = terrain->heightmap[x][z];
*row++ = terrain->heightmap[x][z];
}
}
@ -80,12 +76,81 @@ unsigned char exportHeightmapPNG(const T_TERRAIN* terrain, const char *out_path,
png_set_rows(png_ptr, info_ptr, row_ptrs);
png_write_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL);
for ( y = 0; y < terrain->height * TILE_HEIGHT_TUNE; y++ ) {
png_free(png_ptr, row_ptrs[y]);
for ( z = 0; z < terrain->height * TERRAIN_TILE_SAMPLING; z++ ) {
png_free(png_ptr, row_ptrs[z]);
}
png_free(png_ptr, row_ptrs);
png_destroy_write_struct(&png_ptr, &info_ptr);
fclose(_png_f);
return EXIT_SUCCESS;
return NO_ERROR;
}
#endif
unsigned char exportHeightmapOBJ(const T_TERRAIN* terrain_struct, const char *out_path, T_PROG_OPTIONS* p_opts) {
char objExport_path[128];
char mtlExport_path[128];
obj* objConstruct = NULL;
unsigned int i,j,stride;
int surfID = 0;
float vertexBuff[3] = {0};
int indicesBuff[3] = {0};
if (terrain_struct == NULL || out_path == NULL)
return ERROR_ARGS_NULL;
strcpy(objExport_path, out_path);
if (p_opts->output_dir) {
#ifdef _WIN32
strcat(objExport_path, "-out\\");
#else
strcat(objExport_path, "-out/");
#endif
strcat(objExport_path, "heightmap");
} else {
strcat(objExport_path, "-heightmap");
}
strcpy(mtlExport_path, objExport_path);
strcat(objExport_path, ".obj\0");
strcat(mtlExport_path, ".mtl\0");
objConstruct = obj_create(NULL);
// Build face/surface material group
surfID = obj_add_surf(objConstruct);
obj_add_mtrl(objConstruct);
// Build vertex container
for ( i = 0; i < terrain_struct->verticesmap_size; i++ ) {
vertexBuff[0] = terrain_struct->verticesmap[i].x;
vertexBuff[1] = terrain_struct->verticesmap[i].y;
vertexBuff[2] = terrain_struct->verticesmap[i].z;
obj_set_vert_v(objConstruct, obj_add_vert(objConstruct), vertexBuff);
}
// Build indices container
// Each tile contains 2 triangles, build both of them.
// 1-2 2
// |/ /|
// 3 3-4
stride = terrain_struct->width * TERRAIN_TILE_SAMPLING;
for ( j = 0; j < terrain_struct->width * TERRAIN_TILE_SAMPLING - 1; j++ ) {
for ( i = 0; i < terrain_struct->width * TERRAIN_TILE_SAMPLING - 1; i++ ) {
indicesBuff[0] = j * stride + i + 1 - 1; //TODO: -1 needed to compensate the obj constructor. Really need to rewrite my own...
indicesBuff[1] = indicesBuff[0] + 1;
indicesBuff[2] = indicesBuff[0] + stride;
obj_set_poly(objConstruct, surfID, obj_add_poly(objConstruct, surfID), indicesBuff);
indicesBuff[0] = indicesBuff[1];
indicesBuff[1] = indicesBuff[2] + 1;
//indicesBuff[2] = indicesBuff[0] + stride;
obj_set_poly(objConstruct, surfID, obj_add_poly(objConstruct, surfID), indicesBuff);
}
}
obj_write(objConstruct, objExport_path, NULL, 8);
obj_delete(objConstruct);
return NO_ERROR;
}

5
src/hmp_export.h
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@ -1,6 +1,6 @@
/**
* \file hmp_export.h
* \date 31/07/2022
* \date 02/08/2022
* \author JackCarterSmith
* \copyright GPL-v3.0
* \brief Export datas to heightmap PNG and Waveform OBJ format.
@ -9,6 +9,9 @@
#ifndef SRC_HMP_EXPORT_H_
#define SRC_HMP_EXPORT_H_
#ifndef NO_PNG_SUPPORT
unsigned char exportHeightmapPNG(const T_TERRAIN* terrain, const char* out_path, T_PROG_OPTIONS* p_opts);
#endif
unsigned char exportHeightmapOBJ(const T_TERRAIN* terrain_struct, const char *out_path, T_PROG_OPTIONS* p_opts);
#endif /* SRC_HMP_EXPORT_H_ */

61
src/hmp_parser.c
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@ -17,6 +17,7 @@
static void processTilesToHeightmap(T_TERRAIN* terrain, const T_TILE_INDICES* tiles_indices,
const T_HMPFILE_TILE* tiles, const unsigned char negativeOutput);
static void processHeighmapToVertices(T_TERRAIN* terrain, const float h_scale);
unsigned char parseHMPFile(const char* fileName, T_TERRAIN* hmp_struct, T_PROG_OPTIONS* p_opts) {
unsigned char err = NO_ERROR;
@ -56,6 +57,7 @@ unsigned char parseHMPFile(const char* fileName, T_TERRAIN* hmp_struct, T_PROG_O
printf("[DBG] > Height scale: %.8f\n", y_scale);
printf("[DBG] > Tiles count: %d\n", ((T_HMPFILE_HEADER *)memFile)->tiles_count);
printf("[DBG] > Tiles offset: 0x%X\n", tiles_offset);
printf("[DBG] > Terrain size: %dx%d\n", hmp_struct->width, hmp_struct->height);
printf("\n");
}
if (p_opts->god_mode) {
@ -75,6 +77,8 @@ unsigned char parseHMPFile(const char* fileName, T_TERRAIN* hmp_struct, T_PROG_O
// Convert tiles datas to raw heightmap
processTilesToHeightmap(hmp_struct, tiles_indices, tiles, p_opts->neg_heightmap);
// Convert tiles datas to terrain vertices
processHeighmapToVertices(hmp_struct, y_scale);
free(tiles);
free(tiles_indices);
@ -99,18 +103,19 @@ void cleanUpResources(T_TERRAIN* terrain) {
if (terrain == NULL) return;
for ( i = 0; i < terrain->width * TILE_HEIGHT_TUNE; i++ )
for ( i = 0; i < terrain->width * TERRAIN_TILE_SAMPLING; i++ )
free(terrain->heightmap[i]);
free(terrain->heightmap);
free(terrain->verticesmap);
free(terrain);
}
static void processTilesToHeightmap(T_TERRAIN* terrain, const T_TILE_INDICES* tiles_indices, const T_HMPFILE_TILE* tiles, const unsigned char negativeOutput) {
T_TILE_INDICES tiles_idx;
unsigned int i,j,k,l;
unsigned int heightmap_size_w = terrain->width * TILE_HEIGHT_TUNE;
unsigned int heightmap_size_h = terrain->height * TILE_HEIGHT_TUNE;
unsigned int heightmap_size_w = terrain->width * TERRAIN_TILE_SAMPLING;
unsigned int heightmap_size_h = terrain->height * TERRAIN_TILE_SAMPLING;
// Build 2D array to contain height values
terrain->heightmap = (unsigned char **)malloc(heightmap_size_w * sizeof(unsigned char *));
@ -124,14 +129,52 @@ static void processTilesToHeightmap(T_TERRAIN* terrain, const T_TILE_INDICES* ti
tiles_idx = tiles_indices[j * terrain->width + i];
// Get the 5x5 bytes height values for this tile
for ( k = 0; k < TILE_HEIGHT_TUNE; k++ ) {
for ( l = 0; l < TILE_HEIGHT_TUNE; l++ ) {
if (negativeOutput)
terrain->heightmap[i*TILE_HEIGHT_TUNE+k][j*TILE_HEIGHT_TUNE+l] = 255 - (tiles[tiles_idx].height_values[l][k] + 128);
else
terrain->heightmap[i*TILE_HEIGHT_TUNE+k][j*TILE_HEIGHT_TUNE+l] = tiles[tiles_idx].height_values[l][k] + 128;
for ( k = 0; k < TERRAIN_TILE_SAMPLING; k++ ) {
for ( l = 0; l < TERRAIN_TILE_SAMPLING; l++ ) {
if (negativeOutput) {
// Invert Z to set 0,0 origin at bottom left of terrain
terrain->heightmap[i*TERRAIN_TILE_SAMPLING+k][(heightmap_size_h-1) - (j*TERRAIN_TILE_SAMPLING+l)] =
tiles[tiles_idx].height_values[l][k] + 128;
//terrain->heightmap[i*TERRAIN_TILE_SAMPLING+k][j*TERRAIN_TILE_SAMPLING+l] =
// tiles[tiles_idx].height_values[l][k] + 128;
} else {
// Invert Z to set 0,0 origin at bottom left of terrain
terrain->heightmap[i*TERRAIN_TILE_SAMPLING+k][(heightmap_size_h-1) - (j*TERRAIN_TILE_SAMPLING+l)] =
255 - (tiles[tiles_idx].height_values[l][k] + 128);
//terrain->heightmap[i*TERRAIN_TILE_SAMPLING+k][j*TERRAIN_TILE_SAMPLING+l] =
// 255 - (tiles[tiles_idx].height_values[l][k] + 128);
}
}
}
}
}
}
static void processHeighmapToVertices(T_TERRAIN* terrain, const float h_scale) {
unsigned int i,j,k;
float w_half,h_half,_h_scale;
if (terrain->heightmap == NULL) return;
terrain->verticesmap_size = terrain->width * TERRAIN_TILE_SAMPLING * terrain->height * TERRAIN_TILE_SAMPLING;
w_half = terrain->width * 2; // Terrain center defined as mesh center -- sould not be used for game application
h_half = terrain->height * 2;
_h_scale = h_scale * 2.0 / 10.0; // Convert read scale to display scale, don't known the real operation in game
// Build vertex list of the terrain
terrain->verticesmap = (T_VERTEX *)malloc(terrain->verticesmap_size * sizeof(T_VERTEX));
for ( j = 0; j < terrain->height * TERRAIN_TILE_SAMPLING; j++ ) {
for ( i = 0; i < terrain->width * TERRAIN_TILE_SAMPLING; i++ ) {
k = j * terrain->width * TERRAIN_TILE_SAMPLING + i;
terrain->verticesmap[k].x = TERRAIN_MESH_SCALE * (-w_half + i);
terrain->verticesmap[k].z = TERRAIN_MESH_SCALE * (-h_half + j);
terrain->verticesmap[k].y = terrain->heightmap[i][j] * _h_scale;
}
}
}

2
src/hmp_struct.h
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@ -34,6 +34,8 @@ typedef struct terrain {
unsigned short height;
unsigned char** heightmap;
unsigned int verticesmap_size;
T_VERTEX* verticesmap;
} T_TERRAIN ;

5
src/options.h
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@ -10,7 +10,10 @@
#define OPTIONS_H_
// Number of height values to take for computing terrain (default: 4)
#define TILE_HEIGHT_TUNE 4
#define TERRAIN_TILE_SAMPLING 4
// Scale value for vertex grid constructor (default: 0.1)
#define TERRAIN_MESH_SCALE 0.1
/// Options structure
typedef union u_prog_options {