fdataloader.c File Reference

Handle the loading of data-files. More...

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "rendermodes.h"

Defines
#define	NEW_OFFS
#define	X
#define	Y
Functions
void	swap_BGR (rendersurf *data)
	Swap bytes (RGB->BGR).
void	vel_to_img_space (void)
	Map the regular grid to a cartesian grid.
void	loadDAT (char *filename)
	Load .dat-files.
	loadGRI (char *filename)
	Load .gri-files.
void	build_hmap_cmap (int data_selector, uint32_t **hmap, uint32_t **cmap, uint32_t **cmap_3d)
	Build the "height- and colormap" from the given data. Also allocates the needed space in memory.
void	init_color_palette (void)
	Initialize the color palette. Note that the colortable is not yet used in the current release.
void	build_lower_mip (uint32_t *hdata, uint32_t **low_mip)
	Build mip-map-"hull". Hierarchical acceleration for 3D rendermode.
void	draw_pencil_sketch (uint32_t *dst, int dst_w, int dst_h, vec4f *dir_data, float *len_data, int add_data_idx)
	Pencil-sketch Rendering. Use the current value (length, magnitude, ...) to select an appropriate sketch-texture.
Variables
int	rotate

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Detailed Description

Handle the loading of data-files.

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Function Documentation

void build_hmap_cmap (  int  data_selector, uint32_t **  hmap, uint32_t **  cmap, uint32_t **  cmap_3d )

Build the "height- and colormap" from the given data. Also allocates the needed space in memory. Parameters: data_selector  Choose between the velocity-flowdata and optionally included additional data (pressure, ...) hmap  Pointer to the memory location which is to store the heightmap. cmap  Pointer to the memory location which is to store the colormap. cmap_3d  Pointer to the memory location which is to store the colormap for 3D mode.

void build_lower_mip (  uint32_t *  hdata, uint32_t **  low_mip )

Build mip-map-"hull". Hierarchical acceleration for 3D rendermode. Parameters: hdata  Pointer to the original heightmap. low_mip  Will store the "hull"-mipmap of the heightmap.

void draw_pencil_sketch (  uint32_t *  dst, int  dst_w, int  dst_h, vec4f *  dir_data, float *  len_data, int  add_data_idx )

Pencil-sketch Rendering. Use the current value (length, magnitude, ...) to select an appropriate sketch-texture. Parameters: dst  Pointer to the blit-destination dst_w  The blit-destination's width dst_h  The blit-destination's height dir_data  Pointer to the velocity-vectors of the flow-field len_data  Pointer to alternative magnitude-scaling factor add_data_idx  Index of alternative magnitude-scaling factor

void loadDAT (  char *  filename  )

Load .dat-files. Loads data-files. Parameters: filename  File to load.

loadGRI (  char *  filename  )

Load .gri-files. Load geometry-files Parameters: filename  File to load.

void swap_BGR (  rendersurf *  data  )

Swap bytes (RGB->BGR). Parameters: data  Pointer to rendersurf-struct which also has a pointer to the data which is to be swapped.

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