Removed asumptions for chan dir in graphics

Author: WhiteNinjaZ

vpr/src/draw/draw_rr_edges.cpp

@@ -100,7 +100,7 @@ void draw_chany_to_chany_edge(RRNodeId from_node, RRNodeId to_node, int to_track
     /* UDSD Modification by WMF Begin */
     else {
         if (rr_graph.node_direction(to_node) != Direction::BIDIR) {
-            if (to_track % 2 == 0) { /* INC wire starts at bottom edge */
+            if (rr_graph.node_direction(to_node) == Direction::INC) { /* INC wire starts at bottom edge */
 
                 y2 = to_chan.bottom();
                 /* since no U-turns from_track must be INC as well */
@@ -191,7 +191,7 @@ void draw_chanx_to_chanx_edge(RRNodeId from_node, RRNodeId to_node, int to_track
     else {
         if (rr_graph.node_direction(to_node) != Direction::BIDIR) {
             /* must connect to to_node's wire beginning at x2 */
-            if (to_track % 2 == 0) { /* INC wire starts at leftmost edge */
+            if (rr_graph.node_direction(to_node) == Direction::INC) { /* INC wire starts at leftmost edge */
                 VTR_ASSERT(from_xlow < to_xlow);
                 x2 = to_chan.left();
                 /* since no U-turns from_track must be INC as well */
@@ -270,12 +270,11 @@ void draw_chanx_to_chany_edge(int chanx_node, int chanx_track, int chany_node, i
         x1 = draw_coords->tile_x[chany_x] + draw_coords->get_tile_width();
         if (rr_graph.node_direction(RRNodeId(chanx_node)) != Direction::BIDIR && (SwitchType)switch_type != SwitchType::SHORT) {
             if (edge_dir == FROM_X_TO_Y) {
-                if ((chanx_track % 2) == 1) { /* If dec wire, then going left */
+                if (rr_graph.node_direction(RRNodeId(chanx_node)) == Direction::DEC) { /* If dec wire, then going left */
                     x1 = draw_coords->tile_x[chany_x + 1];
                 }
             }
         }
-
     } else { /* Must draw connection going left. */
         x1 = chanx_bbox.left();
     }
@@ -285,7 +284,7 @@ void draw_chanx_to_chany_edge(int chanx_node, int chanx_track, int chany_node, i
 
         if (rr_graph.node_direction(RRNodeId(chany_node)) != Direction::BIDIR && (SwitchType)switch_type != SwitchType::SHORT) {
             if (edge_dir == FROM_Y_TO_X) {
-                if ((chany_track % 2) == 1) { /* If dec wire, then going down */
+                if (rr_graph.node_direction(RRNodeId(chany_node)) == Direction::DEC) { /* If dec wire, then going down */
                     y2 = draw_coords->tile_y[chanx_y + 1];
                 }
             }