ui.gadgets.cartesian: restore from unmaintained

diff --git a/extra/ui/gadgets/cartesian/cartesian.factor b/extra/ui/gadgets/cartesian/cartesian.factor
new file mode 100644 (file)
index 0000000..730b0f5
--- /dev/null
+++ b/extra/ui/gadgets/cartesian/cartesian.factor
@@ -0,0 +1,42 @@
+
+USING: kernel combinators sequences opengl.gl
+       ui.render ui.gadgets ui.gadgets.slate
+       accessors ;
+
+IN: ui.gadgets.cartesian
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+TUPLE: cartesian < slate x-min x-max y-min y-max z-min z-max perspective ;
+
+: init-cartesian ( cartesian -- cartesian )
+  init-slate
+  -10 >>x-min
+   10 >>x-max
+  -10 >>y-min
+   10 >>y-max
+   -1 >>z-min
+    1 >>z-max ;
+
+: <cartesian> ( -- cartesian ) cartesian new init-cartesian ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+M: cartesian establish-coordinate-system ( cartesian -- cartesian )
+   dup
+   {
+     [ x-min>> ] [ x-max>> ]
+     [ y-min>> ] [ y-max>> ]
+     [ z-min>> ] [ z-max>> ]
+   }
+   cleave
+   glOrtho ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: x-range ( cartesian range -- cartesian ) first2 [ >>x-min ] [ >>x-max ] bi* ;
+: y-range ( cartesian range -- cartesian ) first2 [ >>y-min ] [ >>y-max ] bi* ;
+: z-range ( cartesian range -- cartesian ) first2 [ >>z-min ] [ >>z-max ] bi* ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+