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mandelbrotsrc
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mand7.c
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C/C++ Source or Header
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1992-05-06
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6KB
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266 lines
/*****************************************************************************
* MAND7.C - Save Dragon (Write Picture)
* Mandelbrot Self-Squared Dragon Generator
* For the Commodore Amiga
* Version 2.01
*
* Copyright (C) 1986, =Robert J. Mical=
* Placed in the Public Domain
*
* This program may be distributed free of charge as long as the above
* notice is retained. You may extract any or all information contained
* in this file for use in your own programs
*
****************************************************************************/
#include "mand.h"
extern struct Menu MainMenu[MENU_COUNT];
extern struct MenuItem OptionsItems[OPTIONS_COUNT];
extern int MathBase, MathTransBase;
extern SHORT Color0, Color1, Color2;
extern SHORT UserPalette[29];
/*----------------------*/
/* Graphics definitions */
extern struct GfxBase *GfxBase;
extern struct IntuitionBase *IntuitionBase;
extern struct RastPort *rp,*rp2;
extern struct ViewPort *vp;
extern struct Window *w,*w2, *ColorWindow;
extern struct Screen *screen;
extern struct IntuiMessage *message;
extern long last_color;
extern BOOL SettingCenter, SettingBoxSize;
/*----------------------------------*/
/* Miscellaneous Global Definitions */
extern union kludge {
float f;
int i;
} start_r,end_r,start_i,end_i; /* Block bounds for set */
extern int max_x,max_y,max_mem_y; /* Graphics window size */
extern int max_count,color_inc,color_offset,color_set,color_mode,color_div;
extern int color_inset,func_num;
extern int v_starty,max_mem;
extern long v_offset;
extern UWORD *color_table,*v_mand_store;
extern int modified, want_read;
extern FILE *console,*v_fp,*redir_fp;
extern SHORT ZoomCenterX, ZoomCenterY, ZoomBoxSizeX, ZoomBoxSizeY;
extern SHORT ZoomBoxStartX, ZoomBoxStartY;
extern struct NewScreen ns;
/* === variables defined here ============================================= */
UBYTE *FriendlyTools[] =
{
"FILETYPE=Graphicraft",
};
UWORD ProjectObjectData[] =
{
0x1FF0, 0x0000,
0x783C, 0x6000,
0xE00F, 0xF800,
0xE00F, 0xF800,
0x783C, 0x6000,
0x1FF0, 0x0000,
/* */
0x0000, 0x0000,
0x07C0, 0x0000,
0x1FF0, 0x0000,
0x1FF0, 0x0000,
0x07C0, 0x0000,
0x0000, 0x0000,
};
struct Image ProjectObjectImage =
{
0, 0,
21, 6, 2,
&ProjectObjectData[0],
3, 0,
NULL,
};
struct DiskObject ProjectObject =
{
WB_DISKMAGIC,
WB_DISKVERSION,
{
/* the Gadget structure */
NULL,
0, 0,
25, 12,
GADGHBOX | GADGIMAGE,
RELVERIFY | GADGIMMEDIATE,
BOOLGADGET,
(APTR)&ProjectObjectImage,
NULL,
NULL,
0, 0, 0, 0,
},
WBPROJECT,
":Graphicraft",
&FriendlyTools[0],
NO_ICON_POSITION, NO_ICON_POSITION,
NULL,
NULL,
PROCESS_STACKSIZE,
};
LONG PictModes[3] =
{
CAMG,
4,
NULL,
};
LONG PictBody[2] =
{
BODY,
40000,
};
struct PaintingHeader PaintingHeader =
{
FORM, /* IFFID */
(40156), /* file length (not a nice way (too bad, eh?)) */
ILBM,
BMHD,
sizeof(struct BitMapHeader),
{ /* start of the BitMapHeader structure */
320, 200,
0, 0,
5,
0,
0,
0,
0,
10, 11,
320, 200, /* end of BitMapHead */
},
CMAP,
96, /* this value is followed by 32 color registers */
};
BOOL SavePicture(filename)
UBYTE *filename;
{
SHORT i, j, offset;
ULONG length, actual_length, file;
UBYTE *p, component, rgbbyte;
USHORT rgb;
BOOL written;
written = FALSE;
/* Open the data file */
file = Open(filename, MODE_NEWFILE);
if (file == NULL)
/* Couldn't open as a new file */
goto EXIT_ERROR;
/***********************************************************************
* to write the buffer to the disk, we need to write:
* "FORM"
* file length
* "ILBM"
* "BMHD"
* BMHD length
* BitMapHeader structure
* "CMAP"
* CMAP length
* colors
* pad byte if needed
* "BODY"
* BODY length
* body data
**********************************************************************/
/* First, write out the header */
length = sizeof(struct PaintingHeader);
actual_length = Write(file, &PaintingHeader, length);
if (actual_length != length)
goto WRITE_ERROR;
/* also, enough bytes for each color register */
for (i = 0; i < (1 << ns.Depth); i++)
{
for (component = 0; component < 3; component++)
{
rgb = (GetRGB4(vp->ColorMap, i));
rgbbyte = (rgb >> (4 * (2 - component)));
rgbbyte <<= 4;
actual_length = Write(file, &rgbbyte, 1);
if (actual_length != 1)
goto WRITE_ERROR;
}
}
actual_length = Write(file, &PictBody[0], 8);
if (actual_length != 8)
goto WRITE_ERROR;
/* Finally, the data (uncompressed for now). */
/* First, get the bytelength per line */
length = (((ns.Width + 15) >> 4) << 1);
/* For every line ... */
for (j = 0; j < ns.Height; j++)
{
offset = length * j;
/* For every bit plane ... */
for (i = 0; i < ns.Depth; i++)
{
/* p is set to the start of the line in this bit plane */
p = (screen->BitMap.Planes[i]) + offset;
actual_length = Write(file, p, length);
if (actual_length != length) goto WRITE_ERROR;
}
}
PictModes[2] = vp->Modes;
actual_length = Write(file, &PictModes[0], 12);
if (actual_length != 12)
goto WRITE_ERROR;
if (PutDiskObject(filename, &ProjectObject) == FALSE)
goto WRITE_ERROR;
written = TRUE;
WRITE_ERROR:
Close(file);
EXIT_ERROR:
if (NOT written)
{
fprintf(console, "*** COULDN'T WRITE YOUR FILE! ***\n");
DisplayBeep(NULL);
DeleteFile(filename);
}
return(written);
}