X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=samples%2Ftgidemo.c;h=2a603dd1d9bb70823ec35355372ba268ed4c1032;hb=5ef1f65c9bd9f83ecbb8c66c6d8f8da0dec85e47;hp=818d35d25b51ccc535fd9e4e4da124ebfe1de299;hpb=6106ec729e02fa19d87be1c407442a6bdc44c784;p=cc65

diff --git a/samples/tgidemo.c b/samples/tgidemo.c
index 818d35d25..2a603dd1d 100644
--- a/samples/tgidemo.c
+++ b/samples/tgidemo.c
@@ -56,7 +56,7 @@ static unsigned YRes;
 
 
 /*****************************************************************************/
-/*     	      	    	  	     Code				     */
+/*     	      	    	    	     Code				     */
 /*****************************************************************************/
 
 
@@ -90,15 +90,17 @@ static void DoCircles (void)
     static const unsigned char Palette[2] = { COLOR_WHITE, COLOR_LIGHTRED };
     unsigned char I;
     unsigned char Color = 1;
+    unsigned X = XRes / 2;
+    unsigned Y = YRes / 2;
 
     tgi_setpalette (Palette);
     while (!kbhit ()) {
         tgi_setcolor (1);
-        tgi_line (0, 0, 319, 199);
-        tgi_line (0, 199, 319, 0);
+        tgi_line (0, 0, XRes-1, YRes-1);
+        tgi_line (0, YRes-1, XRes-1, 0);
         tgi_setcolor (Color);
         for (I = 10; I < 240; I += 10) {
-            tgi_circle (160, 100, I);
+            tgi_circle (X, Y, I);
         }
         Color ^= 0x01;
     }
@@ -140,18 +142,42 @@ static void DoCheckerboard (void)
 static void DoDiagram (void)
 {
     static const unsigned char Palette[2] = { COLOR_WHITE, COLOR_BLACK };
-    unsigned X;
+    unsigned X, I;
 
     tgi_setpalette (Palette);
     tgi_setcolor (1);
-    tgi_line (10, 10, 10, 190);
-    tgi_lineto (310, 190);
+    tgi_line (10, 10, 10, YRes-10);
+    tgi_lineto (XRes-10, YRes-10);
     tgi_line (8, 12, 10, 10);
     tgi_lineto (12, 12);
-    tgi_line (308, 188, 310, 190);
-    tgi_lineto (308, 192);
-    for (X = 0; X < sizeof (SinusTable); ++X) {
-        tgi_setpixel (X+10, SinusTable[X]);
+    tgi_line (XRes-12, YRes-12, XRes-10, YRes-10);
+    tgi_lineto (XRes-12, YRes-8);
+    for (I = 0, X = 10; X < XRes-10; ++X) {
+        tgi_setpixel (X, SinusTable[I]);
+	if (++I >= sizeof (SinusTable)) {
+	    I = 0;
+	}
+    }
+
+    cgetc ();
+    tgi_clear ();
+}
+
+
+
+static void DoLines (void)
+{
+    static const unsigned char Palette[2] = { COLOR_WHITE, COLOR_BLACK };
+    unsigned X;
+
+    tgi_setpalette (Palette);
+    tgi_setcolor (1);
+
+    for	(X = 0; X < YRes; X+=10) {
+	tgi_line (0, 0, YRes, X);
+	tgi_line (0, 0, X, YRes);
+	tgi_line (YRes, YRes, 0, YRes-X);
+	tgi_line (YRes, YRes, YRes-X, 0);
     }
 
     cgetc ();
@@ -170,7 +196,7 @@ int main (void)
     /* Load and initialize the driver */
     tgi_load (TGI_MODE_320_200_2);
     CheckError ("tgi_load");
-    tgi_init (TGI_MODE_320_200_2);
+    tgi_init ();
     CheckError ("tgi_init");
 
     /* Get stuff from the driver */
@@ -184,6 +210,7 @@ int main (void)
     DoCircles ();
     DoCheckerboard ();
     DoDiagram ();
+    DoLines ();
 
     /* Unload the driver */
     tgi_unload ();
@@ -195,3 +222,5 @@ int main (void)
     printf ("Done\n");
     return EXIT_SUCCESS;
 }
+
+