11 /*****************************************************************************/
13 /*****************************************************************************/
17 static const unsigned char SinusTable[] = {
18 0x64,0x63,0x61,0x5F,0x5D,0x5B,0x59,0x57,0x55,0x54,
19 0x52,0x50,0x4E,0x4C,0x4A,0x49,0x47,0x45,0x43,0x42,
20 0x40,0x3E,0x3C,0x3B,0x39,0x38,0x36,0x34,0x33,0x31,
21 0x30,0x2E,0x2D,0x2B,0x2A,0x28,0x27,0x26,0x24,0x23,
22 0x22,0x20,0x1F,0x1E,0x1D,0x1C,0x1B,0x1A,0x19,0x18,
23 0x17,0x16,0x15,0x14,0x13,0x12,0x12,0x11,0x10,0x10,
24 0x0F,0x0E,0x0E,0x0D,0x0D,0x0C,0x0C,0x0C,0x0B,0x0B,
25 0x0B,0x0B,0x0B,0x0B,0x0B,0x0A,0x0B,0x0B,0x0B,0x0B,
26 0x0B,0x0B,0x0B,0x0C,0x0C,0x0C,0x0D,0x0D,0x0E,0x0E,
27 0x0F,0x10,0x10,0x11,0x12,0x12,0x13,0x14,0x15,0x16,
28 0x17,0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20,
29 0x22,0x23,0x24,0x26,0x27,0x28,0x2A,0x2B,0x2D,0x2E,
30 0x30,0x31,0x33,0x34,0x36,0x38,0x39,0x3B,0x3C,0x3E,
31 0x40,0x42,0x43,0x45,0x47,0x49,0x4A,0x4C,0x4E,0x50,
32 0x52,0x54,0x55,0x57,0x59,0x5B,0x5D,0x5F,0x61,0x63,
33 0x64,0x65,0x67,0x69,0x6B,0x6D,0x6F,0x71,0x73,0x74,
34 0x76,0x78,0x7A,0x7C,0x7E,0x7F,0x81,0x83,0x85,0x86,
35 0x88,0x8A,0x8C,0x8D,0x8F,0x91,0x92,0x94,0x95,0x97,
36 0x98,0x9A,0x9B,0x9D,0x9E,0xA0,0xA1,0xA2,0xA4,0xA5,
37 0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,
38 0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB6,0xB7,0xB8,0xB8,
39 0xB9,0xBA,0xBA,0xBB,0xBB,0xBC,0xBC,0xBC,0xBD,0xBD,
40 0xBD,0xBD,0xBD,0xBD,0xBD,0xBE,0xBD,0xBD,0xBD,0xBD,
41 0xBD,0xBD,0xBD,0xBC,0xBC,0xBC,0xBB,0xBB,0xBA,0xBA,
42 0xB9,0xB8,0xB8,0xB7,0xB6,0xB6,0xB5,0xB4,0xB3,0xB2,
43 0xB1,0xB0,0xAF,0xAE,0xAD,0xAC,0xAB,0xAA,0xA9,0xA8,
44 0xA6,0xA5,0xA4,0xA2,0xA1,0xA0,0x9E,0x9D,0x9B,0x9A,
45 0x98,0x97,0x95,0x94,0x92,0x91,0x8F,0x8D,0x8C,0x8A,
46 0x88,0x86,0x85,0x83,0x81,0x7F,0x7E,0x7C,0x7A,0x78,
47 0x76,0x74,0x73,0x71,0x6F,0x6D,0x6B,0x69,0x67,0x65
58 /*****************************************************************************/
60 /*****************************************************************************/
64 static void CheckError (const char* S)
66 unsigned char Error = tgi_geterror ();
67 if (Error != TGI_ERR_OK) {
68 printf ("%s: %d\n", S, Error);
75 /* Warn the user that the TGI driver is needed for this program */
77 printf ("Warning: This program needs the TGI\n"
78 "driver on disk! Press 'y' if you have\n"
79 "it - any other key exits.\n");
80 if (cgetc () != 'y') {
83 printf ("Ok. Please wait patiently...\n");
88 static void DoCircles (void)
90 static const unsigned char Palette[2] = { COLOR_WHITE, COLOR_LIGHTRED };
92 unsigned char Color = 1;
94 tgi_setpalette (Palette);
97 tgi_line (0, 0, 319, 199);
98 tgi_line (0, 199, 319, 0);
100 for (I = 10; I < 240; I += 10) {
101 tgi_circle (160, 100, I);
112 static void DoCheckerboard (void)
114 static const unsigned char Palette[2] = { COLOR_WHITE, COLOR_BLACK };
118 tgi_setpalette (Palette);
121 for (Y = 0; Y < YRes; Y += 10) {
122 for (X = 0; X < XRes; X += 10) {
123 tgi_setcolor (Color);
124 tgi_bar (X, Y, X+9, Y+9);
140 static void DoDiagram (void)
142 static const unsigned char Palette[2] = { COLOR_WHITE, COLOR_BLACK };
145 tgi_setpalette (Palette);
147 tgi_line (10, 10, 10, 190);
148 tgi_lineto (310, 190);
149 tgi_line (8, 12, 10, 10);
151 tgi_line (308, 188, 310, 190);
152 tgi_lineto (308, 192);
153 for (X = 0; X < sizeof (SinusTable); ++X) {
154 tgi_setpixel (X+10, SinusTable[X]);
165 unsigned char Border;
167 /* Warn the user that the tgi driver is needed */
170 /* Load and initialize the driver */
171 tgi_load (TGI_MODE_320_200_2);
172 CheckError ("tgi_load");
173 tgi_init (TGI_MODE_320_200_2);
174 CheckError ("tgi_init");
176 /* Get stuff from the driver */
177 XRes = tgi_getxres ();
178 YRes = tgi_getyres ();
180 /* Set the palette, set the border color */
181 Border = bordercolor (COLOR_BLACK);
183 /* Do graphics stuff */
188 /* Unload the driver */
191 /* Reset the border */
192 bordercolor (Border);