void draw_tree(BITMAP *bitmap, VECTOR p, VECTOR v, NODE *node, int x, int y, int r, int c)
{
int inv_c = inverse_color(c);
if(node != NULL)
{
if(node->right != NULL)
{
//line(bitmap, x, y, x + 2 * r, y + 2 * r, inv_c);
draw_tree(bitmap, p, v, node->right, x + 2 * r, y + 2 * r, r, c);
}
if(node->left != NULL)
{
//line(bitmap, x, y, x - 2 * r, y + 2 * r, inv_c);
draw_tree(bitmap, p, v, node->left, x - 2 * r, y + 2 * r, r, c);
}
if(in_view(p, v, node->a, node->b))
vector_line(bitmap, node->a, node->b, makecol(255, 255, 255));
else
vector_line(bitmap, node->a, node->b, 0);
textprintf_centre_ex(bitmap, font, node->a.x - 10, node->a.y, makecol(0, 0, 255), -1, "%d", node->val);
//circlefill(bitmap, x, y, r, c);
//circle(bitmap, x, y, r, inv_c);
//textprintf_centre_ex(bitmap, font, x, y - 4, inv_c, -1, "%d", node->val);
}
}
main()
{
cpc_SetBorder(3);
cpc_DisableFirmware();
cpc_SetMode(2);
// https://codeforwin.org/2017/12/access-two-dimensional-array-using-pointers-c-programming.html
inverse_color(&(sprite+2),sprite[0],sprite[1]);
putsprite(SPR_OR, 0, 0, sprite);
while (!cpc_AnyKeyPressed()){}
}
