* test/demo.c: Nicer complete demo.

test/demo.c

@@ -29,6 +29,8 @@
 
 static void display_menu(void);
 
+static void demo_all(void);
+
 static void demo_dots(void);
 static void demo_lines(void);
 static void demo_thin_lines(void);
@@ -37,7 +39,7 @@ static void demo_triangles(void);
 static void demo_outlined_triangles(void);
 static void demo_sprites(void);
 
-int clipping = 0;
+int force_clipping = 0;
 struct ee_sprite *sprite = NULL;
 
 int main(int argc, char **argv)
@@ -73,6 +75,10 @@ int main(int argc, char **argv)
                 demo = NULL;
                 quit = 1;
                 break;
+            case '0':
+                ee_clear();
+                demo = demo_all;
+                break;
             case '1':
                 ee_clear();
                 demo = demo_dots;
@@ -133,18 +139,20 @@ static void display_menu(void)
     ee_putstr("============");
 
     ee_goto(4, 6);
-    ee_putstr("1: dots demo");
+    ee_putstr("0: complete demo");
     ee_goto(4, 7);
-    ee_putstr("2: lines demo");
+    ee_putstr("1: dots demo");
     ee_goto(4, 8);
-    ee_putstr("3: thin lines demo");
+    ee_putstr("2: lines demo");
     ee_goto(4, 9);
-    ee_putstr("4: circles demo");
+    ee_putstr("3: thin lines demo");
     ee_goto(4, 10);
-    ee_putstr("5: triangles demo");
+    ee_putstr("4: circles demo");
     ee_goto(4, 11);
-    ee_putstr("6: outlined triangles demo");
+    ee_putstr("5: triangles demo");
     ee_goto(4, 12);
+    ee_putstr("6: outlined triangles demo");
+    ee_goto(4, 13);
     ee_putstr("7: sprites demo");
 
     ee_goto(4, yo - 2);
@@ -153,6 +161,118 @@ static void display_menu(void)
     ee_refresh();
 }
 
+static void demo_all(void)
+{
+    static int i = 0;
+
+    int j, xo, yo, x1, y1, x2, y2, x3, y3;
+
+    i++;
+
+    ee_clear();
+
+    /* Draw the sun */
+    ee_color(EE_YELLOW);
+    xo = ee_get_width() / 4;
+    yo = ee_get_height() / 4 + 5 * sin(0.03*i);
+
+    for(j = 0; j < 16; j++)
+    {
+        x1 = xo - (30 + sin(0.03*i) * 8) * sin(0.03*i + M_PI*j/8);
+        y1 = yo + (15 + sin(0.03*i) * 4) * cos(0.03*i + M_PI*j/8);
+        ee_draw_thin_line(xo, yo, x1, y1);
+    }
+
+    ee_color(EE_WHITE);
+    for(j = 15 + sin(0.03*i) * 8; j--;)
+    {
+        ee_draw_circle(xo, yo, j, '#');
+    }
+
+    ee_color(EE_YELLOW);
+    ee_draw_circle(xo, yo, 15 + sin(0.03*i) * 8, '#');
+
+    /* Draw the pyramid */
+    xo = ee_get_width() * 5 / 8;
+    yo = 2;
+
+    x1 = ee_get_width() / 8 + sin(0.03*i) * 5;
+    y1 = ee_get_height() / 2 + cos(0.03*i) * 5;
+
+    x2 = ee_get_width() - 10 - cos(0.02*i) * 10;
+    y2 = ee_get_height() * 3 / 4 - 5 + sin(0.02*i) * 5;
+
+    x3 = ee_get_width() / 4 - sin(0.02*i) * 5;
+    y3 = ee_get_height() * 3 / 4 + cos(0.02*i) * 5;
+
+    ee_color(EE_GREEN);
+    ee_fill_triangle(xo, yo, x2, y2, x1, y1, '%');
+    ee_color(EE_YELLOW);
+    ee_draw_thin_line(xo, yo, x2, y2);
+    ee_draw_thin_line(x2, y2, x1, y1);
+    ee_draw_thin_line(x1, y1, xo, yo);
+
+    ee_color(EE_RED);
+    ee_fill_triangle(x1, y1, x2, y2, x3, y3, '#');
+    ee_color(EE_YELLOW);
+    ee_draw_thin_line(x1, y1, x2, y2);
+    ee_draw_thin_line(x2, y2, x3, y3);
+    ee_draw_thin_line(x3, y3, x1, y1);
+
+    ee_color(EE_BLUE);
+    ee_fill_triangle(xo, yo, x2, y2, x3, y3, '%');
+    ee_color(EE_YELLOW);
+    ee_draw_thin_line(xo, yo, x2, y2);
+    ee_draw_thin_line(x2, y2, x3, y3);
+    ee_draw_thin_line(x3, y3, xo, yo);
+
+    /* Draw a background triangle */
+    x1 = 2;
+    y1 = 2;
+
+    x2 = ee_get_width() - 3;
+    y2 = ee_get_height() / 2;
+
+    x3 = ee_get_width() / 3;
+    y3 = ee_get_height() - 3;
+
+    ee_color(EE_BLUE);
+//    ee_fill_triangle(x1, y1, x2, y2, x3, y3, '.');
+    ee_color(EE_CYAN);
+    ee_draw_thin_line(x1, y1, x3, y3);
+    ee_draw_thin_line(x2, y2, x1, y1);
+    ee_draw_thin_line(x3, y3, x2, y2);
+
+    xo = ee_get_width() / 2 + cos(0.027*i) * ee_get_width() / 3;
+    yo = ee_get_height() / 2 - sin(0.027*i) * ee_get_height() / 2;
+
+    ee_draw_thin_line(x1, y1, xo, yo);
+    ee_draw_thin_line(x2, y2, xo, yo);
+    ee_draw_thin_line(x3, y3, xo, yo);
+
+    /* Draw a sprite behind the pyramid */
+    ee_draw_sprite(xo, yo, sprite);
+
+    /* Draw a trail behind the foreground sprite */
+    for(j = i - 60; j < i; j++)
+    {
+        int delta = ee_rand(-5, 5);
+        ee_color(ee_rand(1, 10));
+        ee_goto(ee_get_width() / 2
+                 + cos(0.02*j) * (delta + ee_get_width() / 4),
+                ee_get_height() / 2
+                 + sin(0.02*j) * (delta + ee_get_height() / 3));
+        ee_putchar('#');
+    }
+
+    /* Draw foreground sprite */
+    ee_draw_sprite(ee_get_width() / 2 + cos(0.02*i) * ee_get_width() / 4,
+                   ee_get_height() / 2 + sin(0.02*i) * ee_get_height() / 3,
+                   sprite);
+
+    ee_refresh();
+}
+
 static void demo_dots(void)
 {
     int xmax = ee_get_width() - 1;
@@ -176,7 +296,7 @@ static void demo_lines(void)
 
     /* Draw lines */
     ee_color(ee_rand(1, 10));
-    if(clipping)
+    if(force_clipping)
     {
         ee_draw_line(ee_rand(- w, 2 * w), ee_rand(- h, 2 * h),
                      ee_rand(- w, 2 * w), ee_rand(- h, 2 * h), '#');
@@ -196,7 +316,7 @@ static void demo_thin_lines(void)
 
     /* Draw lines */
     ee_color(ee_rand(1, 10));
-    if(clipping)
+    if(force_clipping)
     {
         ee_draw_thin_line(ee_rand(- w, 2 * w), ee_rand(- h, 2 * h),
                           ee_rand(- w, 2 * w), ee_rand(- h, 2 * h));
@@ -215,7 +335,7 @@ static void demo_circles(void)
     int h = ee_get_height();
 
     /* Draw circles */
-    if(clipping)
+    if(force_clipping)
     {
         ee_color(ee_rand(1, 10));
         ee_draw_circle(ee_rand(- w, 2 * w),
@@ -249,7 +369,7 @@ static void demo_triangles(void)
 
     /* Draw lines */
     ee_color(ee_rand(1, 10));
-    if(clipping)
+    if(force_clipping)
     {
         ee_fill_triangle(ee_rand(- w, 2 * w), ee_rand(- h, 2 * h),
                          ee_rand(- w, 2 * w), ee_rand(- h, 2 * h),
@@ -268,18 +388,21 @@ static void demo_outlined_triangles(void)
 {
     int w = ee_get_width();
     int h = ee_get_height();
+    int x1, y1, x2, y2, x3, y3;
 
     /* Draw lines */
     ee_color(ee_rand(1, 10));
-    if(clipping)
+    if(force_clipping)
     {
-        ee_fill_triangle(ee_rand(- w, 2 * w), ee_rand(- h, 2 * h),
-                         ee_rand(- w, 2 * w), ee_rand(- h, 2 * h),
-                         ee_rand(- w, 2 * w), ee_rand(- h, 2 * h), '#');
+        x1 = ee_rand(- w, 2 * w);
+        y1 = ee_rand(- h, 2 * h);
+        x2 = ee_rand(- w, 2 * w);
+        y2 = ee_rand(- h, 2 * h);
+        x3 = ee_rand(- w, 2 * w);
+        y3 = ee_rand(- h, 2 * h);
     }
     else
     {
-        int x1, y1, x2, y2, x3, y3;
 
         x1 = ee_rand(0, w - 1);
         y1 = ee_rand(0, h - 1);
@@ -287,52 +410,22 @@ static void demo_outlined_triangles(void)
         y2 = ee_rand(0, h - 1);
         x3 = ee_rand(0, w - 1);
         y3 = ee_rand(0, h - 1);
+    }
+
+    ee_fill_triangle(x1, y1, x2, y2, x3, y3, '#');
 
-        ee_fill_triangle(x1, y1, x2, y2, x3, y3, '#');
+    ee_color(ee_rand(1, 10));
+    ee_draw_thin_line(x1, y1, x2, y2);
+    ee_draw_thin_line(x2, y2, x3, y3);
+    ee_draw_thin_line(x3, y3, x1, y1);
 
-        ee_color(ee_rand(1, 10));
-        ee_draw_thin_line(x1, y1, x2, y2);
-        ee_draw_thin_line(x2, y2, x3, y3);
-        ee_draw_thin_line(x3, y3, x1, y1);
-    }
     ee_refresh();
 }
 
 static void demo_sprites(void)
 {
-    static int i = 0;
-
-    int x1, y1, x2, y2, x3, y3;
-
-    i++;
-
-    x1 = 2;
-    y1 = 2;
-
-    x2 = ee_get_width() - 3;
-    y2 = ee_get_height() / 2;
-
-    x3 = ee_get_width() / 3;
-    y3 = ee_get_height() - 3;
-
-    ee_clear();
-
-    /* Draw a sprite behind the triangle */
-    ee_draw_sprite(ee_get_width() / 2 + cos(0.027*i) * 30,
-                   ee_get_height() / 2 - sin(0.027*i) * 20, sprite);
-
-    /* Draw a background triangle */
-    ee_color(EE_BLUE);
-    ee_fill_triangle(x1, y1, x2, y2, x3, y3, '.');
-    ee_color(EE_CYAN);
-    ee_draw_thin_line(x1, y1, x3, y3);
-    ee_draw_thin_line(x2, y2, x1, y1);
-    ee_draw_thin_line(x3, y3, x2, y2);
-
-    /* Draw foreground sprite */
-    ee_draw_sprite(ee_get_width() / 2 + cos(0.02*i) * 20,
-                   ee_get_height() / 2 + sin(0.02*i) * 10, sprite);
-
+    ee_draw_sprite(ee_rand(0, ee_get_width() - 1),
+                   ee_rand(0, ee_get_height() - 1), sprite);
     ee_refresh();
 }