RASF Class Reference

#import "RASF.h"

Inheritance diagram for RASF:

Collaboration diagram for RASF:

Instance Methods
(id)	- init
(id)	- open:
()	- strncpy [implementation]
()	- return(self) [implementation]
Instance Methods inherited from Image
(id)	- displayImage
(id)	- drawSelf::
(id)	- free
(id)	- saveAsTiff:usingCompression:
(id)	- saveAsEPS:
(id)	- windowWillClose:

Additional Inherited Members
Protected Attributes inherited from Image
id	thiswindow
id	thisview
id	tiffimage
int	xsize
int	ysize
void *	rmap
void *	gmap
void *	bmap
void *	amap
unsigned char *	r
unsigned char *	g
unsigned char *	b
unsigned char *	a
NXZone *	newZone
char	fileName [1024]
char	windowIconName [1024]
int	numColors
NXRect	temprect

Detailed Description

Definition at line 13 of file RASF.h.

Method Documentation

- (id) init

Implements Image.

- (id) open:

(char *)

filename

Definition at line 36 of file RASF.m.

References Image::b, Image::displayImage, Image::fileName, Image::g, Image::numColors, Image::r, Image::rmap, Image::thisview, Image::xsize, and Image::ysize.

     :(char *)filename
{
    NXStream *fp;
    int x,y;
    int i;
    unsigned char red,green,blue,n;
    unsigned char buf[80];
    int count = 0;

    thisview = self;
    rmap = 0;
    strncpy(fileName,filename,1024);
    if ((fp = NXMapFile(fileName,NX_READONLY)) == NULL) {
    NXRunAlertPanel("RASF ERROR", "Can't open %s", NULL, NULL, NULL, fileName);
    return(self);
    }

    //Read in the header from the RASF file
    NXRead(fp,buf,sizeof(char)*8);
    if(strncmp((char *)buf,"gl  RASF",8)){
    NXRunAlertPanel("RASF ERROR", "%s Not an RASF file ", NULL, NULL, NULL, fileName);
    return(self);
    }

    // Read in the size of the raster file from the header
    for (i=0;i<2;i++){
    NXRead(fp,&red,sizeof(char));
    }
    NXRead(fp,&red,sizeof(char));
    NXRead(fp,&green,sizeof(char));
    xsize=red*256+green;

    for (i=0;i<2;i++){
    NXRead(fp,&red,sizeof(char));
    }
    NXRead(fp,&red,sizeof(char));
    NXRead(fp,&green,sizeof(char));
    ysize=red*256+green;

    // Now comes the erase values which we will just ignore
    for (i=0;i<64;i++){
    NXRead(fp,&red,sizeof(char));
    }

    // Allocate three buffers to store the R,G,B Triplets
    r = (unsigned char *)NXZoneMalloc(newZone,ysize*xsize*(sizeof(unsigned char)));
    g = (unsigned char *)NXZoneMalloc(newZone,ysize*xsize*(sizeof(unsigned char)));
    b = (unsigned char *)NXZoneMalloc(newZone,ysize*xsize*(sizeof(unsigned char)));

    i = 0;
    for (y=(ysize-1);y>=0;y--){
    for (x=0;x<xsize;x++){
        if (count == 0){
        NXRead(fp,&red,sizeof(char));
        NXRead(fp,&green,sizeof(char));
        NXRead(fp,&blue,sizeof(char));
        NXRead(fp,&n,sizeof(char));
        r[i]  = red;
        g[i]  = green;
        b[i]  = blue;
        i++;
        count=n;
        }else{
        count--;
        r[i]  = red;
        g[i]  = green;
        b[i]  = blue;
        i++;
        }
    }
    }

    numColors = 3;
    [self displayImage];
    NXCloseMemory(fp,NX_FREEBUFFER);
    return(self);
}

Here is the call graph for this function:

- (return(self))

implementation

Implements Image.

- strncpy (windowIconName)  ("rasf.icon.tiff")  (14)

implementation

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The documentation for this class was generated from the following files:

• get/next/RASF.h
• get/next/RASF.m