Category : C Source Code
Archive : TWKTC.ZIP
Filename : SIMPLE.C
Output of file : SIMPLE.C contained in archive : TWKTC.ZIP
#include
#include
#include
#include "TWK256.h" /* pick up the defines for the driver */
#include "TWKDET.H"
#include "VGAEXTRA.H"
struct PTS {
int x, y;
}; /* Structure to hold vertex points */
int g_driver,g_mode,g_error;
int x,y,count;
int SelectedMode;
int StartX,StartY,r;
DACarray Palette_Array; /* create array to hold DAC values */
RGB ColorValue;
int count;
/*------------------- get command line options ---------*/
void get_options(char Option)
{
switch (Option) {
case '0' : SelectedMode = 0; break;
case '1' : SelectedMode = 1; break;
case '2' : SelectedMode = 2; break;
case '3' : SelectedMode = 3; break;
case '4' : SelectedMode = 4; break;
case '5' : SelectedMode = 5; break;
case '6' : SelectedMode = 6; break;
case '7' : SelectedMode = 7; break;
default : printf("\nInvalid option: %c\n",Option); exit(4); break;
}
}
/*--------------- Hue Saturation and Value to RGB ----------------*/
void hsv2rgb(float h,float s,float v,RGB *Color)
{
float h1,f,a[7];
int i;
h1 = h / 60;
i = h1;
f = h1 - i;
a[1] = v;
a[2] = v;
a[3] = v * (1 - (s*f));
a[4] = v * (1 - s);
a[5] = a[4];
a[6] = v * (1-(s*(1-f)));
if (i>4) i = i - 4; else i = i + 2;
Color->Red = a[i];
if (i>4) i = i - 4; else i = i + 2;
Color->Green = a[i];
if (i>4) i = i - 4; else i = i + 2;
Color->Blue = a[i];
}
void Load_Palette(void)
{
float hue,sat,val,x;
hue = 0;
sat = 1.0;
val = 63.0;
for (x=1; x<128; x++) {
hsv2rgb(hue,sat,val,&ColorValue);
Palette_Array[x][red] = ColorValue.Red;
Palette_Array[x][grn] = ColorValue.Green;
Palette_Array[x][blu] = ColorValue.Blue;
hue = hue + 3.0;
}
hue = 0;
sat = 1.0;
val = 43.0;
for (x=128; x<256; x++) {
hsv2rgb(hue,sat,val,&ColorValue);
Palette_Array[x][red] = ColorValue.Red;
Palette_Array[x][grn] = ColorValue.Green;
Palette_Array[x][blu] = ColorValue.Blue;
hue = hue + 2.80;
}
Palette_Array[0][red] = 1; /* Set first DAC register to black */
Palette_Array[0][grn] = 2;
Palette_Array[0][blu] = 3;
Palette_Array[253][red] = 0x1f; /* Set last DAC register to white */
Palette_Array[253][grn] = 0x1f;
Palette_Array[253][blu] = 0x1f;
Palette_Array[254][red] = 0x2f; /* Set last DAC register to white */
Palette_Array[254][grn] = 0x2f;
Palette_Array[254][blu] = 0x2f;
Palette_Array[255][red] = 0x3f; /* Set last DAC register to white */
Palette_Array[255][grn] = 0x3f;
Palette_Array[255][blu] = 0x3f;
dacpalette(Palette_Array); /* load DAC registers with new colors */
}
/*----------------- Main Program -----------------------------------------*/
void main(argc,argv)
int argc;
char *argv[];
{
if ((argc < 2) || (argc > 2)) {
printf("Options are:\n");
printf("\t Simple 0 (320x200)\n");
printf("\t 1 (320x240)\n");
printf("\t 2 (320x400)\n");
printf("\t 3 (360x480)\n");
printf("\t 4 (320x480)\n");
printf("\t 5 (376x564)\n");
printf("\t 6 (400x564)\n");
printf("\t 7 (400x600)\n");
exit(1);
}
if (argc == 2) get_options(argv[1][0]);
installuserdriver("TWK256",DetectTWK256);
g_driver = DETECT;
initgraph(&g_driver,&g_mode,"");
setgraphmode(SelectedMode);
g_error = graphresult();
if (g_error != 0) {
printf("%s \n",grapherrormsg(g_error));
exit(1);
}
Load_Palette();
x = getmaxx();
y = getmaxy();
line(0,0,x,0);
line(x,0,x,y);
line(x,y,0,y);
line(0,y,0,0);
line(0,0,getmaxx(),getmaxy());
outtextxy(getmaxx()/2,getmaxy()/2,"Page 1");
setactivepage(1);
outtextxy(getmaxx()/2,getmaxy()/2,"Page 2");
getch();
setvisualpage(1);
getch();
setvisualpage(0);
getch();
restorecrtmode();
}
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