added slider thing, broke rendering somehow though

src/drawables/rect.rs

@@ -1,11 +1,11 @@
 use crate::canvas::canvas_frame::Drawable;
-use crate::util::vertex::{VertexTypes, ColorVertex3D};
+use crate::util::vertex::{VertexType, ColorVertex3D};
 
 ///
 #[derive(Debug, Clone)]
 pub struct Rect {
 
-    pub verts: VertexTypes,
+    pub verts: VertexType,
 
     position: (f32, f32),
     size: (f32, f32),
@@ -43,14 +43,14 @@ impl Rect {
         ];
 
         Rect {
-            verts: VertexTypes::ColorType(verts),
+            verts: VertexType::ColorType(verts),
             position: position,
             size: size,
         }
     }
 }
 impl Drawable for Rect {
-    fn get(&self) -> Vec<VertexTypes> {
+    fn get(&self) -> Vec<VertexType> {
         vec![self.verts.clone()]
     }