vpr: Add support for many more block colours

Author: kmurray

vpr/src/draw/draw.cpp

@@ -63,9 +63,12 @@ constexpr float SB_EDGE_STRAIGHT_ARROW_POSITION = 0.95;
 
 constexpr float EMPTY_BLOCK_LIGHTEN_FACTOR = 0.10;
 
-//Kelly's maximum contrast colors (Kenneth Kelly, "Twenty-Two Colors of Maximum Contrast", Color Eng. 3(6), 1943)
-const std::array<t_color,21> kelly_max_contrast_colors = {
-    //t_color(242, 243, 244), //white: skip white since it doesn't contrast well with the light background
+//Kelly's maximum contrast colors are selected to be easily distinguishable as described in:
+//  Kenneth Kelly, "Twenty-Two Colors of Maximum Contrast", Color Eng. 3(6), 1943
+//We use these to highlight a relatively small number of things (e.g. stages in a critical path, 
+//a subset of selected net) where it is important for them to be visually distinct.
+const std::vector<t_color> kelly_max_contrast_colors = {
+    //t_color(242, 243, 244), //white: skip white since it doesn't contrast well with VPR's light background
     t_color( 34,  34,  34), //black
     t_color(243, 195,   0), //yellow
     t_color(135,  86, 146), //purple
@@ -89,8 +92,12 @@ const std::array<t_color,21> kelly_max_contrast_colors = {
     t_color( 43,  61,  38)  //olive green
 };
 
+//The colours used to draw block types
 const std::vector<color_types> block_type_colors = {
-    BISQUE,
+    //This first set of colours is somewhat curated to yield
+    //a nice colour pallette
+    BISQUE, //EMPTY type is usually the type with index 0, so this colour
+            //usually unused
     LIGHTGREY,
     LIGHTSKYBLUE,
     THISTLE,
@@ -105,6 +112,145 @@ const std::vector<color_types> block_type_colors = {
     FIREBRICK,
     LIMEGREEN,
     PLUM,
+
+    //However, if we have lots of block types we just assign arbitrary HTML 
+    //colours. Note that these are shuffled (instead of in alphabetical order)
+    //since some colours which are alphabetically close are also close in 
+    //shade (making them difficult to distinguish)
+    DARKGREEN,
+    PALEVIOLETRED,
+    BLUE,
+    FORESTGREEN,
+    WHEAT,
+    GOLD,
+    MOCCASIN,
+    MEDIUMORCHID,
+    SKYBLUE,
+    WHITESMOKE,
+    LIME,
+    MEDIUMSLATEBLUE,
+    TOMATO,
+    CYAN,
+    OLIVE,
+    LIGHTGRAY,
+    STEELBLUE,
+    LIGHTCORAL,
+    IVORY,
+    MEDIUMVIOLETRED,
+    SNOW,
+    DARKGRAY,
+    GREY,
+    GRAY,
+    YELLOW,
+    REBECCAPURPLE,
+    DARKCYAN,
+    MIDNIGHTBLUE,
+    ROSYBROWN,
+    CORNSILK,
+    NAVAJOWHITE,
+    BLANCHEDALMOND,
+    ORCHID,
+    LIGHTGOLDENRODYELLOW,
+    MAROON,
+    GREENYELLOW,
+    SILVER,
+    PALEGOLDENROD,
+    LAWNGREEN,
+    DIMGREY,
+    DARKVIOLET,
+    DARKTURQUOISE,
+    INDIGO,
+    DARKORANGE,
+    PAPAYAWHIP,
+    MINTCREAM,
+    GREEN,
+    DARKMAGENTA,
+    MAGENTA,
+    LIGHTSLATEGRAY,
+    CHARTREUSE,
+    GHOSTWHITE,
+    LIGHTCYAN,
+    SIENNA,
+    GOLDENROD,
+    DARKSLATEGRAY,
+    OLDLACE,
+    SEASHELL,
+    SPRINGGREEN,
+    MEDIUMTURQUOISE,
+    LEMONCHIFFON,
+    MISTYROSE,
+    OLIVEDRAB,
+    LIGHTBLUE,
+    CHOCOLATE,
+    SEAGREEN,
+    DEEPPINK,
+    LIGHTSEAGREEN,
+    FLORALWHITE,
+    CADETBLUE,
+    AZURE,
+    BURLYWOOD,
+    AQUAMARINE,
+    BROWN,
+    POWDERBLUE,
+    HOTPINK,
+    MEDIUMBLUE,
+    BLUEVIOLET,
+    GREY75,
+    PURPLE,
+    TEAL,
+    ANTIQUEWHITE,
+    DEEPSKYBLUE,
+    SLATEGRAY,
+    SALMON,
+    SLATEBLUE,
+    DARKORCHID,
+    LIGHTPINK,
+    DARKBLUE,
+    PEACHPUFF,
+    PALEGREEN,
+    DARKSALMON,
+    DARKOLIVEGREEN,
+    DARKSEAGREEN,
+    VIOLET,
+    RED,
+    DARKSLATEGREY,
+    PALETURQUOISE,
+    DARKRED,
+    SLATEGREY,
+    HONEYDEW,
+    AQUA,
+    LIGHTSTEELBLUE,
+    DODGERBLUE,
+    MEDIUMSPRINGGREEN,
+    NAVY,
+    GAINSBORO,
+    LIGHTYELLOW,
+    CRIMSON,
+    FUCHSIA,
+    DARKGOLDENROD,
+    SANDYBROWN,
+    BEIGE,
+    LINEN,
+    ORANGERED,
+    ROYALBLUE,
+    LAVENDER,
+    TAN,
+    YELLOWGREEN,
+    CORNFLOWERBLUE,
+    LAVENDERBLUSH,
+    MEDIUMSEAGREEN,
+    PINK,
+    GREY55,
+    PERU,
+    LIGHTGREEN,
+    LIGHTSALMON,
+    INDIANRED,
+    DIMGRAY,
+    LIGHTSLATEGREY,
+    MEDIUMAQUAMARINE,
+    DARKGREY,
+    ORANGE,
+    ALICEBLUE,
 };
 
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