diff options
Diffstat (limited to 'lib/percept/src')
| -rw-r--r-- | lib/percept/src/egd_primitives.erl | 514 | ||||
| -rw-r--r-- | lib/percept/src/egd_render.erl | 267 |
2 files changed, 385 insertions, 396 deletions
diff --git a/lib/percept/src/egd_primitives.erl b/lib/percept/src/egd_primitives.erl index 7b6e15efe7..b64189c552 100644 --- a/lib/percept/src/egd_primitives.erl +++ b/lib/percept/src/egd_primitives.erl @@ -23,32 +23,27 @@ -module(egd_primitives). --export([ - create/2, - color/1, - pixel/3, - polygon/3, - line/4, - line/5, - arc/4, - arc/5, - rectangle/4, - filledRectangle/4, - filledEllipse/4, - filledTriangle/5, - text/5 - ]). - --export([ - info/1, - object_info/1, - rgb_float2byte/1 - ]). --export([ - arc_to_edges/3, - convex_hull/1, - edges/1 - ]). +-export([create/2, + color/1, + pixel/3, + polygon/3, + line/4, + line/5, + arc/4, + arc/5, + rectangle/4, + filledRectangle/4, + filledEllipse/4, + filledTriangle/5, + text/5]). + +-export([info/1, + object_info/1, + rgb_float2byte/1]). + +-export([arc_to_edges/3, + convex_hull/1, + edges/1]). -include("egd.hrl"). @@ -75,22 +70,16 @@ object_info(O) -> %% interface functions -line(I, Sp, Ep, Color) -> - I#image{ objects = [ - #image_object{ - type = line, - points = [Sp, Ep], - span = span([Sp, Ep]), - color = Color} | I#image.objects]}. +line(#image{objects=Os}=I, Sp, Ep, Color) -> + line(#image{objects=Os}=I, Sp, Ep, 1, Color). -line(I, Sp, Ep, Stroke, Color) -> - I#image{ objects = [ - #image_object{ - type = line, - points = [Sp, Ep], - span = span([Sp, Ep]), - internals = Stroke, - color = Color } | I#image.objects]}. +line(#image{objects=Os}=I, Sp, Ep, Wd, Color) -> + I#image{objects=[#image_object{ + internals = Wd, + type = line, + points = [Sp, Ep], + span = span([Sp, Ep]), + color = Color}|Os]}. arc(I, {Sx,Sy} = Sp, {Ex,Ey} = Ep, Color) -> X = Ex - Sx, @@ -98,241 +87,234 @@ arc(I, {Sx,Sy} = Sp, {Ex,Ey} = Ep, Color) -> R = math:sqrt(X*X + Y*Y)/2, arc(I, Sp, Ep, R, Color). -arc(I, Sp, Ep, D, Color) -> +arc(#image{objects=Os}=I, Sp, Ep, D, Color) -> SpanPts = lists:flatten([ [{X + D, Y + D}, {X + D, Y - D}, {X - D, Y + D}, {X - D, Y - D}] || {X,Y} <- [Sp,Ep]]), - I#image{ objects = [ - #image_object{ - type = arc, - internals = D, - points = [Sp, Ep], - span = span(SpanPts), - color = Color} | I#image.objects]}. + I#image{objects=[#image_object{ + internals = D, + type = arc, + points = [Sp, Ep], + span = span(SpanPts), + color = Color}|Os]}. -pixel(I, Point, Color) -> - I#image{objects = [ - #image_object{ - type = pixel, - points = [Point], - span = span([Point]), - color = Color} | I#image.objects]}. - -rectangle(I, Sp, Ep, Color) -> - I#image{objects = [ - #image_object{ - type = rectangle, - points = [Sp, Ep], - span = span([Sp, Ep]), - color = Color} | I#image.objects]}. - -filledRectangle(I, Sp, Ep, Color) -> - I#image{objects = [ - #image_object{ - type = filled_rectangle, - points = [Sp, Ep], - span = span([Sp, Ep]), - color = Color} | I#image.objects]}. - -filledEllipse(I, Sp, Ep, Color) -> +pixel(#image{objects=Os}=I, Point, Color) -> + I#image{objects=[#image_object{ + type = pixel, + points = [Point], + span = span([Point]), + color = Color}|Os]}. + +rectangle(#image{objects=Os}=I, Sp, Ep, Color) -> + I#image{objects=[#image_object{ + type = rectangle, + points = [Sp, Ep], + span = span([Sp, Ep]), + color = Color}|Os]}. + +filledRectangle(#image{objects=Os}=I, Sp, Ep, Color) -> + I#image{objects=[#image_object{ + type = filled_rectangle, + points = [Sp, Ep], + span = span([Sp, Ep]), + color = Color}|Os]}. + +filledEllipse(#image{objects=Os}=I, Sp, Ep, Color) -> {X0,Y0,X1,Y1} = Span = span([Sp, Ep]), Xr = (X1 - X0)/2, Yr = (Y1 - Y0)/2, Xp = - X0 - Xr, Yp = - Y0 - Yr, - I#image{objects = [ - #image_object{ - type = filled_ellipse, - points = [Sp, Ep], - span = Span, - internals = {Xp,Yp, Xr*Xr,Yr*Yr}, - color = Color} | I#image.objects]}. - -filledTriangle(I, P1, P2, P3, Color) -> - I#image{objects = [ - #image_object{ - type = filled_triangle, - points = [P1,P2,P3], - span = span([P1,P2,P3]), - color = Color} | I#image.objects]}. - - -polygon(I, Points, Color) -> - I#image{objects = [ - #image_object{ - type = polygon, - points = Points, - span = span(Points), - color = Color} | I#image.objects]}. + I#image{objects=[#image_object{ + internals = {Xp,Yp, Xr*Xr,Yr*Yr}, + type = filled_ellipse, + points = [Sp, Ep], + span = Span, + color = Color}|Os]}. + +filledTriangle(#image{objects=Os}=I, P1, P2, P3, Color) -> + I#image{objects=[#image_object{ + type = filled_triangle, + points = [P1,P2,P3], + span = span([P1,P2,P3]), + color = Color}|Os]}. + +polygon(#image{objects=Os}=I, Points, Color) -> + I#image{objects=[#image_object{ + type = polygon, + points = Points, + span = span(Points), + color = Color}|Os]}. + +text(#image{objects=Os}=I, {Xs,Ys}=Sp, Font, Text, Color) -> + {FW,FH} = egd_font:size(Font), + Length = length(Text), + Ep = {Xs + Length*FW, Ys + FH + 5}, + I#image{objects=[#image_object{ + internals = {Font, Text}, + type = text_horizontal, + points = [Sp], + span = span([Sp,Ep]), + color = Color}|Os]}. create(W, H) -> - #image{ width = W, height = H}. + #image{width = W, height = H}. - -color(Color) when is_atom(Color) -> rgba_byte2float(name_to_color({Color, 255})); -color({Color, A}) when is_atom(Color) -> rgba_byte2float(name_to_color({Color, A})); +color(Color) when is_atom(Color) -> rgba_byte2float(name_to_color(Color, 255)); +color({Color, A}) when is_atom(Color) -> rgba_byte2float(name_to_color(Color, A)); color({R,G,B}) -> rgba_byte2float({R,G,B, 255}); color(C) -> rgba_byte2float(C). -% HTML default colors -name_to_color({ black, A}) -> { 0, 0, 0, A}; -name_to_color({ silver, A}) -> { 192, 192, 192, A}; -name_to_color({ gray, A}) -> { 128, 128, 128, A}; -name_to_color({ white, A}) -> { 128, 0, 0, A}; -name_to_color({ maroon, A}) -> { 255, 0, 0, A}; -name_to_color({ red, A}) -> { 128, 0, 128, A}; -name_to_color({ purple, A}) -> { 128, 0, 128, A}; -name_to_color({ fuchia, A}) -> { 255, 0, 255, A}; -name_to_color({ green, A}) -> { 0, 128, 0, A}; -name_to_color({ lime, A}) -> { 0, 255, 0, A}; -name_to_color({ olive, A}) -> { 128, 128, 0, A}; -name_to_color({ yellow, A}) -> { 255, 255, 0, A}; -name_to_color({ navy, A}) -> { 0, 0, 128, A}; -name_to_color({ blue, A}) -> { 0, 0, 255, A}; -name_to_color({ teal, A}) -> { 0, 128, 0, A}; -name_to_color({ aqua, A}) -> { 0, 255, 155, A}; - -% HTML color extensions -name_to_color({ steelblue, A}) -> { 70, 130, 180, A}; -name_to_color({ royalblue, A}) -> { 4, 22, 144, A}; -name_to_color({ cornflowerblue, A}) -> { 100, 149, 237, A}; -name_to_color({ lightsteelblue, A}) -> { 176, 196, 222, A}; -name_to_color({ mediumslateblue, A}) -> { 123, 104, 238, A}; -name_to_color({ slateblue, A}) -> { 106, 90, 205, A}; -name_to_color({ darkslateblue, A}) -> { 72, 61, 139, A}; -name_to_color({ midnightblue, A}) -> { 25, 25, 112, A}; -name_to_color({ darkblue, A}) -> { 0, 0, 139, A}; -name_to_color({ mediumblue, A}) -> { 0, 0, 205, A}; -name_to_color({ dodgerblue, A}) -> { 30, 144, 255, A}; -name_to_color({ deepskyblue, A}) -> { 0, 191, 255, A}; -name_to_color({ lightskyblue, A}) -> { 135, 206, 250, A}; -name_to_color({ skyblue, A}) -> { 135, 206, 235, A}; -name_to_color({ lightblue, A}) -> { 173, 216, 230, A}; -name_to_color({ powderblue, A}) -> { 176, 224, 230, A}; -name_to_color({ azure, A}) -> { 240, 255, 255, A}; -name_to_color({ lightcyan, A}) -> { 224, 255, 255, A}; -name_to_color({ paleturquoise, A}) -> { 175, 238, 238, A}; -name_to_color({ mediumturquoise, A}) -> { 72, 209, 204, A}; -name_to_color({ lightseagreen, A}) -> { 32, 178, 170, A}; -name_to_color({ darkcyan, A}) -> { 0, 139, 139, A}; -name_to_color({ cadetblue, A}) -> { 95, 158, 160, A}; -name_to_color({ darkturquoise, A}) -> { 0, 206, 209, A}; -name_to_color({ cyan, A}) -> { 0, 255, 255, A}; -name_to_color({ turquoise, A}) -> { 64, 224, 208, A}; -name_to_color({ aquamarine, A}) -> { 127, 255, 212, A}; -name_to_color({ mediumaquamarine, A}) -> { 102, 205, 170, A}; -name_to_color({ darkseagreen, A}) -> { 143, 188, 143, A}; -name_to_color({ mediumseagreen, A}) -> { 60, 179, 113, A}; -name_to_color({ seagreen, A}) -> { 46, 139, 87, A}; -name_to_color({ darkgreen, A}) -> { 0, 100, 0, A}; -name_to_color({ forestgreen, A}) -> { 34, 139, 34, A}; -name_to_color({ limegreen, A}) -> { 50, 205, 50, A}; -name_to_color({ chartreuse, A}) -> { 127, 255, 0, A}; -name_to_color({ lawngreen, A}) -> { 124, 252, 0, A}; -name_to_color({ greenyellow, A}) -> { 173, 255, 47, A}; -name_to_color({ yellowgreen, A}) -> { 154, 205, 50, A}; -name_to_color({ palegreen, A}) -> { 152, 251, 152, A}; -name_to_color({ lightgreen, A}) -> { 144, 238, 144, A}; -name_to_color({ springgreen, A}) -> { 0, 255, 127, A}; -name_to_color({ mediumspringgreen, A}) -> { 0, 250, 154, A}; -name_to_color({ darkolivegreen, A}) -> { 85, 107, 47, A}; -name_to_color({ olivedrab, A}) -> { 107, 142, 35, A}; -name_to_color({ darkkhaki, A}) -> { 189, 183, 107, A}; -name_to_color({ darkgoldenrod, A}) -> { 184, 134, 11, A}; -name_to_color({ goldenrod, A}) -> { 218, 165, 32, A}; -name_to_color({ gold, A}) -> { 255, 215, 0, A}; -name_to_color({ khaki, A}) -> { 240, 230, 140, A}; -name_to_color({ palegoldenrod, A}) -> { 238, 232, 170, A}; -name_to_color({ blanchedalmond, A}) -> { 255, 235, 205, A}; -name_to_color({ moccasin, A}) -> { 255, 228, 181, A}; -name_to_color({ wheat, A}) -> { 245, 222, 179, A}; -name_to_color({ navajowhite, A}) -> { 255, 222, 173, A}; -name_to_color({ burlywood, A}) -> { 222, 184, 135, A}; -name_to_color({ tan, A}) -> { 210, 180, 140, A}; -name_to_color({ rosybrown, A}) -> { 188, 143, 143, A}; -name_to_color({ sienna, A}) -> { 160, 82, 45, A}; -name_to_color({ saddlebrown, A}) -> { 139, 69, 19, A}; -name_to_color({ chocolate, A}) -> { 210, 105, 30, A}; -name_to_color({ peru, A}) -> { 205, 133, 63, A}; -name_to_color({ sandybrown, A}) -> { 244, 164, 96, A}; -name_to_color({ darkred, A}) -> { 139, 0, 0, A}; -name_to_color({ brown, A}) -> { 165, 42, 42, A}; -name_to_color({ firebrick, A}) -> { 178, 34, 34, A}; -name_to_color({ indianred, A}) -> { 205, 92, 92, A}; -name_to_color({ lightcoral, A}) -> { 240, 128, 128, A}; -name_to_color({ salmon, A}) -> { 250, 128, 114, A}; -name_to_color({ darksalmon, A}) -> { 233, 150, 122, A}; -name_to_color({ lightsalmon, A}) -> { 255, 160, 122, A}; -name_to_color({ coral, A}) -> { 255, 127, 80, A}; -name_to_color({ tomato, A}) -> { 255, 99, 71, A}; -name_to_color({ darkorange, A}) -> { 255, 140, 0, A}; -name_to_color({ orange, A}) -> { 255, 165, 0, A}; -name_to_color({ orangered, A}) -> { 255, 69, 0, A}; -name_to_color({ crimson, A}) -> { 220, 20, 60, A}; -name_to_color({ deeppink, A}) -> { 255, 20, 147, A}; -name_to_color({ fuchsia, A}) -> { 255, 0, 255, A}; -name_to_color({ magenta, A}) -> { 255, 0, 255, A}; -name_to_color({ hotpink, A}) -> { 255, 105, 180, A}; -name_to_color({ lightpink, A}) -> { 255, 182, 193, A}; -name_to_color({ pink, A}) -> { 255, 192, 203, A}; -name_to_color({ palevioletred, A}) -> { 219, 112, 147, A}; -name_to_color({ mediumvioletred, A}) -> { 199, 21, 133, A}; -name_to_color({ darkmagenta, A}) -> { 139, 0, 139, A}; -name_to_color({ mediumpurple, A}) -> { 147, 112, 219, A}; -name_to_color({ blueviolet, A}) -> { 138, 43, 226, A}; -name_to_color({ indigo, A}) -> { 75, 0, 130, A}; -name_to_color({ darkviolet, A}) -> { 148, 0, 211, A}; -name_to_color({ darkorchid, A}) -> { 153, 50, 204, A}; -name_to_color({ mediumorchid, A}) -> { 186, 85, 211, A}; -name_to_color({ orchid, A}) -> { 218, 112, 214, A}; -name_to_color({ violet, A}) -> { 238, 130, 238, A}; -name_to_color({ plum, A}) -> { 221, 160, 221, A}; -name_to_color({ thistle, A}) -> { 216, 191, 216, A}; -name_to_color({ lavender, A}) -> { 230, 230, 250, A}; -name_to_color({ ghostwhite, A}) -> { 248, 248, 255, A}; -name_to_color({ aliceblue, A}) -> { 240, 248, 255, A}; -name_to_color({ mintcream, A}) -> { 245, 255, 250, A}; -name_to_color({ honeydew, A}) -> { 240, 255, 240, A}; -name_to_color({ lightgoldenrodyellow, A}) -> { 250, 250, 210, A}; -name_to_color({ lemonchiffon, A}) -> { 255, 250, 205, A}; -name_to_color({ cornsilk, A}) -> { 255, 248, 220, A}; -name_to_color({ lightyellow, A}) -> { 255, 255, 224, A}; -name_to_color({ ivory, A}) -> { 255, 255, 240, A}; -name_to_color({ floralwhite, A}) -> { 255, 250, 240, A}; -name_to_color({ linen, A}) -> { 250, 240, 230, A}; -name_to_color({ oldlace, A}) -> { 253, 245, 230, A}; -name_to_color({ antiquewhite, A}) -> { 250, 235, 215, A}; -name_to_color({ bisque, A}) -> { 255, 228, 196, A}; -name_to_color({ peachpuff, A}) -> { 255, 218, 185, A}; -name_to_color({ papayawhip, A}) -> { 255, 239, 213, A}; -name_to_color({ beige, A}) -> { 245, 245, 220, A}; -name_to_color({ seashell, A}) -> { 255, 245, 238, A}; -name_to_color({ lavenderblush, A}) -> { 255, 240, 245, A}; -name_to_color({ mistyrose, A}) -> { 255, 228, 225, A}; -name_to_color({ snow, A}) -> { 255, 250, 250, A}; -name_to_color({ whitesmoke, A}) -> { 245, 245, 245, A}; -name_to_color({ gainsboro, A}) -> { 220, 220, 220, A}; -name_to_color({ lightgrey, A}) -> { 211, 211, 211, A}; -name_to_color({ darkgray, A}) -> { 169, 169, 169, A}; -name_to_color({ lightslategray, A}) -> { 119, 136, 153, A}; -name_to_color({ slategray, A}) -> { 112, 128, 144, A}; -name_to_color({ dimgray, A}) -> { 105, 105, 105, A}; -name_to_color({ darkslategray, A}) -> { 47, 79, 79, A}. - -text(I, {Xs,Ys} = Sp, Font, Text, Color) -> - {FW,FH} = egd_font:size(Font), - Length = length(Text), - Ep = {Xs + Length*FW, Ys + FH + 5}, - I#image{objects = [ - #image_object{ - type = text_horizontal, - points = [Sp], - span = span([Sp,Ep]), - internals = {Font, Text}, - color = Color} | I#image.objects]}. +name_to_color(Color, A) -> + case Color of + %% HTML default colors + black -> { 0, 0, 0, A}; + silver -> {192, 192, 192, A}; + gray -> {128, 128, 128, A}; + white -> {128, 0, 0, A}; + maroon -> {255, 0, 0, A}; + red -> {128, 0, 128, A}; + purple -> {128, 0, 128, A}; + fuchia -> {255, 0, 255, A}; + green -> { 0, 128, 0, A}; + lime -> { 0, 255, 0, A}; + olive -> {128, 128, 0, A}; + yellow -> {255, 255, 0, A}; + navy -> { 0, 0, 128, A}; + blue -> { 0, 0, 255, A}; + teal -> { 0, 128, 0, A}; + aqua -> { 0, 255, 155, A}; + + %% HTML color extensions + steelblue -> { 70, 130, 180, A}; + royalblue -> { 4, 22, 144, A}; + cornflowerblue -> {100, 149, 237, A}; + lightsteelblue -> {176, 196, 222, A}; + mediumslateblue -> {123, 104, 238, A}; + slateblue -> {106, 90, 205, A}; + darkslateblue -> { 72, 61, 139, A}; + midnightblue -> { 25, 25, 112, A}; + darkblue -> { 0, 0, 139, A}; + mediumblue -> { 0, 0, 205, A}; + dodgerblue -> { 30, 144, 255, A}; + deepskyblue -> { 0, 191, 255, A}; + lightskyblue -> {135, 206, 250, A}; + skyblue -> {135, 206, 235, A}; + lightblue -> {173, 216, 230, A}; + powderblue -> {176, 224, 230, A}; + azure -> {240, 255, 255, A}; + lightcyan -> {224, 255, 255, A}; + paleturquoise -> {175, 238, 238, A}; + mediumturquoise -> { 72, 209, 204, A}; + lightseagreen -> { 32, 178, 170, A}; + darkcyan -> { 0, 139, 139, A}; + cadetblue -> { 95, 158, 160, A}; + darkturquoise -> { 0, 206, 209, A}; + cyan -> { 0, 255, 255, A}; + turquoise -> { 64, 224, 208, A}; + aquamarine -> {127, 255, 212, A}; + mediumaquamarine -> {102, 205, 170, A}; + darkseagreen -> {143, 188, 143, A}; + mediumseagreen -> { 60, 179, 113, A}; + seagreen -> { 46, 139, 87, A}; + darkgreen -> { 0, 100, 0, A}; + forestgreen -> { 34, 139, 34, A}; + limegreen -> { 50, 205, 50, A}; + chartreuse -> {127, 255, 0, A}; + lawngreen -> {124, 252, 0, A}; + greenyellow -> {173, 255, 47, A}; + yellowgreen -> {154, 205, 50, A}; + palegreen -> {152, 251, 152, A}; + lightgreen -> {144, 238, 144, A}; + springgreen -> { 0, 255, 127, A}; + darkolivegreen -> { 85, 107, 47, A}; + olivedrab -> {107, 142, 35, A}; + darkkhaki -> {189, 183, 107, A}; + darkgoldenrod -> {184, 134, 11, A}; + goldenrod -> {218, 165, 32, A}; + gold -> {255, 215, 0, A}; + khaki -> {240, 230, 140, A}; + palegoldenrod -> {238, 232, 170, A}; + blanchedalmond -> {255, 235, 205, A}; + moccasin -> {255, 228, 181, A}; + wheat -> {245, 222, 179, A}; + navajowhite -> {255, 222, 173, A}; + burlywood -> {222, 184, 135, A}; + tan -> {210, 180, 140, A}; + rosybrown -> {188, 143, 143, A}; + sienna -> {160, 82, 45, A}; + saddlebrown -> {139, 69, 19, A}; + chocolate -> {210, 105, 30, A}; + peru -> {205, 133, 63, A}; + sandybrown -> {244, 164, 96, A}; + darkred -> {139, 0, 0, A}; + brown -> {165, 42, 42, A}; + firebrick -> {178, 34, 34, A}; + indianred -> {205, 92, 92, A}; + lightcoral -> {240, 128, 128, A}; + salmon -> {250, 128, 114, A}; + darksalmon -> {233, 150, 122, A}; + lightsalmon -> {255, 160, 122, A}; + coral -> {255, 127, 80, A}; + tomato -> {255, 99, 71, A}; + darkorange -> {255, 140, 0, A}; + orange -> {255, 165, 0, A}; + orangered -> {255, 69, 0, A}; + crimson -> {220, 20, 60, A}; + deeppink -> {255, 20, 147, A}; + fuchsia -> {255, 0, 255, A}; + magenta -> {255, 0, 255, A}; + hotpink -> {255, 105, 180, A}; + lightpink -> {255, 182, 193, A}; + pink -> {255, 192, 203, A}; + palevioletred -> {219, 112, 147, A}; + mediumvioletred -> {199, 21, 133, A}; + darkmagenta -> {139, 0, 139, A}; + mediumpurple -> {147, 112, 219, A}; + blueviolet -> {138, 43, 226, A}; + indigo -> { 75, 0, 130, A}; + darkviolet -> {148, 0, 211, A}; + darkorchid -> {153, 50, 204, A}; + mediumorchid -> {186, 85, 211, A}; + orchid -> {218, 112, 214, A}; + violet -> {238, 130, 238, A}; + plum -> {221, 160, 221, A}; + thistle -> {216, 191, 216, A}; + lavender -> {230, 230, 250, A}; + ghostwhite -> {248, 248, 255, A}; + aliceblue -> {240, 248, 255, A}; + mintcream -> {245, 255, 250, A}; + honeydew -> {240, 255, 240, A}; + lemonchiffon -> {255, 250, 205, A}; + cornsilk -> {255, 248, 220, A}; + lightyellow -> {255, 255, 224, A}; + ivory -> {255, 255, 240, A}; + floralwhite -> {255, 250, 240, A}; + linen -> {250, 240, 230, A}; + oldlace -> {253, 245, 230, A}; + antiquewhite -> {250, 235, 215, A}; + bisque -> {255, 228, 196, A}; + peachpuff -> {255, 218, 185, A}; + papayawhip -> {255, 239, 213, A}; + beige -> {245, 245, 220, A}; + seashell -> {255, 245, 238, A}; + lavenderblush -> {255, 240, 245, A}; + mistyrose -> {255, 228, 225, A}; + snow -> {255, 250, 250, A}; + whitesmoke -> {245, 245, 245, A}; + gainsboro -> {220, 220, 220, A}; + lightgrey -> {211, 211, 211, A}; + darkgray -> {169, 169, 169, A}; + lightslategray -> {119, 136, 153, A}; + slategray -> {112, 128, 144, A}; + dimgray -> {105, 105, 105, A}; + darkslategray -> { 47, 79, 79, A}; + mediumspringgreen -> { 0, 250, 154, A}; + lightgoldenrodyellow -> {250, 250, 210, A} + end. %%% Generic transformations @@ -411,15 +393,17 @@ point_side(_) -> on_line. %% AUX -span(Points) -> - Xs = [TX||{TX, _} <- Points], - Ys = [TY||{_, TY} <- Points], - Xmin = lists:min(Xs), - Xmax = lists:max(Xs), - Ymin = lists:min(Ys), - Ymax = lists:max(Ys), +span([{X0,Y0}|Points]) -> + span(Points,X0,Y0,X0,Y0). +span([{X0,Y0}|Points],Xmin,Ymin,Xmax,Ymax) -> + span(Points,erlang:min(Xmin,X0), + erlang:min(Ymin,Y0), + erlang:max(Xmax,X0), + erlang:max(Ymax,Y0)); +span([],Xmin,Ymin,Xmax,Ymax) -> {Xmin,Ymin,Xmax,Ymax}. + rgb_float2byte({R,G,B}) -> rgb_float2byte({R,G,B,1.0}); rgb_float2byte({R,G,B,A}) -> {trunc(R*255), trunc(G*255), trunc(B*255), trunc(A*255)}. diff --git a/lib/percept/src/egd_render.erl b/lib/percept/src/egd_render.erl index 8ee41b66ab..c0075b8c42 100644 --- a/lib/percept/src/egd_render.erl +++ b/lib/percept/src/egd_render.erl @@ -27,6 +27,8 @@ -export([eps/1]). -compile(inline). +-export([line_to_linespans/3]). + -include("egd.hrl"). -define('DummyC',0). @@ -216,11 +218,11 @@ parse_objects_on_line(Y, Width, Objects) -> parse_objects_on_line(Y, 1, Width, Objects, []). parse_objects_on_line(_Y, _Z, _, [], Out) -> lists:flatten(Out); parse_objects_on_line(Y, Z, Width, [O|Os], Out) -> - case is_object_on_line(Y, O) of + case is_object_on_line(O, Y) of false -> parse_objects_on_line(Y, Z + 1, Width, Os, Out); true -> - OLs = object_line_data(Y, Z, O), + OLs = object_line_data(O,Y,Z), TOLs = trim_object_line_data(OLs, Width), parse_objects_on_line(Y, Z + 1, Width, Os, [TOLs|Out]) end. @@ -238,9 +240,9 @@ trim_object_line_data([{Z, Xl, Xr, C}|OLs], Width, Out) -> % object_line_data % In: +% Object :: image_object() % Y :: index of height % Z :: index of depth -% Object :: image_object() % Out: % OLs = [{Z, Xl, Xr, Color}] % Z = index of height @@ -250,96 +252,93 @@ trim_object_line_data([{Z, Xl, Xr, C}|OLs], Width, Out) -> % Calculate the length (start and finish index) of an objects horizontal % line given the height index. -object_line_data(Y, Z, Object) -> - object_line_data(Y, Z, Object, Object#image_object.type). -object_line_data(Y, Z, #image_object{ span = {X0, Y0, X1, Y1}, color = C}, rectangle) -> +object_line_data(#image_object{type=rectangle, + span={X0,Y0,X1,Y1}, color=C}, Y, Z) -> if - Y0 =:= Y ; Y1 =:= Y -> - [{Z, X0, X1, C}]; - true -> - [{Z, X0, X0, C}, - {Z, X1, X1, C}] + Y0 =:= Y ; Y1 =:= Y -> + [{Z, X0, X1, C}]; + true -> + [{Z, X0, X0, C}, + {Z, X1, X1, C}] end; -object_line_data(_Y, Z, #image_object{ span = {X0, _, X1, _}, color = C}, filled_rectangle) -> +object_line_data(#image_object{type=filled_rectangle, + span={X0, _, X1, _}, color=C}, _Y, Z) -> [{Z, X0, X1, C}]; -object_line_data(Y, Z, #image_object{ internals={Xr,Yr,Yr2}, span = {X0,Y0,X1,Y1}, color = C}, filled_ellipse) -> +object_line_data(#image_object{type=filled_ellipse, + internals={Xr,Yr,Yr2}, span={X0,Y0,X1,Y1}, color=C}, Y, Z) -> if - X1 - X0 == 0; Y1 - Y0 == 0 -> - [{Z, X0, X1, C}]; - true -> - Yo = trunc(Y - Y0 - Yr), - Yo2 = Yo*Yo, - Xo = math:sqrt((1 - Yo2/Yr2))*Xr, - [{Z, round(X0 - Xo + Xr), round(X0 + Xo + Xr), C}] + X1 - X0 =:= 0; Y1 - Y0 =:= 0 -> + [{Z, X0, X1, C}]; + true -> + Yo = trunc(Y - Y0 - Yr), + Yo2 = Yo*Yo, + Xo = math:sqrt((1 - Yo2/Yr2))*Xr, + [{Z, round(X0 - Xo + Xr), round(X0 + Xo + Xr), C}] end; -object_line_data(Y, Z, #image_object{ intervals = Is, color = C}, filled_triangle) -> +object_line_data(#image_object{type=filled_triangle, + intervals=Is, color=C}, Y, Z) -> case lists:keyfind(Y, 1, Is) of {Y, Xl, Xr} -> [{Z, Xl, Xr, C}]; false -> [] end; -object_line_data(Y, Z, #image_object{ intervals = Is, color = C}, line) -> - case dict:find(Y, Is) of - {ok, Ls} -> [{Z, Xl, Xr, C}||{Xl,Xr} <- Ls]; +object_line_data(#image_object{type=line, + intervals=M, color={R,G,B,_}}, Y, Z) -> + case M of + #{Y := Ls} -> [{Z, Xl, Xr, {R,G,B,1.0-C/255}}||{Xl,Xr,C} <- Ls]; _ -> [] end; -object_line_data(Y, Z, #image_object{ color = C, intervals = Is}, polygon) -> +object_line_data(#image_object{type=polygon, + color=C, intervals=Is}, Y, Z) -> [{Z, Xl, Xr, C} || {Yp, Xl, Xr} <- Is, Yp =:= Y]; -object_line_data(Y, Z, #image_object{ color = C, intervals = Is}, text_horizontal) -> +object_line_data(#image_object{type=text_horizontal, + color=C, intervals=Is}, Y, Z) -> [{Z, Xl, Xr, C} || {Yg, Xl, Xr} <- Is, Yg =:= Y]; -object_line_data(_, Z, #image_object{ span = {X0,_,X1,_}, color = C}, _) -> +object_line_data(#image_object{type=pixel, + span={X0,_,X1,_}, color=C}, _, Z) -> [{Z, X0, X1, C}]. -is_object_on_line(Y, #image_object{ span = Span }) -> - is_object_bounds_on_line(Y, Span). +is_object_on_line(#image_object{span={_,Y0,_,Y1}}, Y) -> + if Y < Y0; Y > Y1 -> false; + true -> true + end. -is_object_bounds_on_line(Y, {_,Y0,_,Y1}) when Y < Y0 ; Y > Y1 -> false; -is_object_bounds_on_line(_, _) -> true. - %%% primitives to line_spans %% compile objects to linespans -precompile(Image = #image{ objects = Os }) -> - Image#image{ objects = precompile_objects(Os) }. - -precompile_objects(Os) -> precompile_objects(Os, []). -precompile_objects([], Out) -> lists:reverse(Out); - -precompile_objects([O = #image_object{ type = line, points = [P0,P1] }| Os], Out) -> - precompile_objects(Os, [O#image_object{ intervals = ls_list2dict(line_ls(P0,P1)) } | Out]); - -precompile_objects([O = #image_object{ type = filled_triangle, points = [P0,P1,P2] } | Os], Out) -> - precompile_objects(Os, [O#image_object{ intervals = triangle_ls(P0,P1,P2) } | Out]); - -precompile_objects([O = #image_object{ type = polygon, points = Pts } | Os], Out) -> - precompile_objects(Os, [O#image_object{ intervals = polygon_ls(Pts) } | Out]); - -precompile_objects([O = #image_object{ type = filled_ellipse, span = {X0,Y0,X1,Y1} } | Os], Out) -> +precompile(#image{objects = Os}=I) -> + I#image{objects = precompile_objects(Os)}. + +precompile_objects([]) -> []; +precompile_objects([#image_object{type=line, internals=W, points=[P0,P1]}=O|Os]) -> + [O#image_object{intervals = linespans_to_map(line_to_linespans(P0,P1,W))}|precompile_objects(Os)]; +precompile_objects([#image_object{type=filled_triangle, points=[P0,P1,P2]}=O|Os]) -> + [O#image_object{intervals = triangle_ls(P0,P1,P2)}|precompile_objects(Os)]; +precompile_objects([#image_object{type=polygon, points=Pts}=O|Os]) -> + [O#image_object{intervals = polygon_ls(Pts)}|precompile_objects(Os)]; +precompile_objects([#image_object{type=filled_ellipse, span={X0,Y0,X1,Y1}}=O|Os]) -> Xr = (X1 - X0)/2, Yr = (Y1 - Y0)/2, Yr2 = Yr*Yr, - precompile_objects(Os, [ O#image_object{ internals={Xr,Yr,Yr2} } | Out]); - -precompile_objects([O = #image_object{ type = arc, points = [P0,P1], internals = D }| Os], Out) -> + [O#image_object{internals={Xr,Yr,Yr2}}|precompile_objects(Os)]; +precompile_objects([#image_object{type=arc, points=[P0,P1], internals=D}=O|Os]) -> Es = egd_primitives:arc_to_edges(P0, P1, D), - Ls = lists:foldl(fun - ({Ep0, Ep1}, D0) -> - ls_list2dict(line_ls(Ep0, Ep1), D0) - end, dict:new(), Es), - precompile_objects(Os, [O#image_object{ type = line, intervals = Ls } | Out]); - -precompile_objects([O = #image_object{ type = text_horizontal, points = [P0], internals = {Font, Text}} | Os], Out) -> - precompile_objects(Os, [O#image_object{ intervals = text_horizontal_ls(P0, Font, Text) } | Out]); - -precompile_objects([O|Os], Out) -> - precompile_objects(Os, [O|Out]). + Ls = lists:foldl(fun ({Ep0,Ep1},M) -> + linespans_to_map(line_to_linespans(Ep0,Ep1,1),M) + end, #{}, Es), + [O#image_object{type=line, intervals=Ls}|precompile_objects(Os)]; +precompile_objects([#image_object{type=text_horizontal, + points=[P0], internals={Font,Text}}=O|Os]) -> + [O#image_object{intervals=text_horizontal_ls(P0,Font,Text)}|precompile_objects(Os)]; +precompile_objects([O|Os]) -> + [O|precompile_objects(Os)]. % triangle @@ -353,7 +352,8 @@ triangle_ls(P1,P2,P3) -> % At an end point, a new line to the point already being drawn % repeat same procedure as above [Sp1, Sp2, Sp3] = tri_pt_ysort([P1,P2,P3]), - triangle_ls_lp(tri_ls_ysort(line_ls(Sp1,Sp2)), Sp2, tri_ls_ysort(line_ls(Sp1,Sp3)), Sp3, []). + triangle_ls_lp(tri_ls_ysort(line_to_linespans(Sp1,Sp2,1)), Sp2, + tri_ls_ysort(line_to_linespans(Sp1,Sp3,1)), Sp3, []). % There will be Y mismatches between the two lists since bresenham is not perfect. % I can be remedied with checking intervals this could however be costly and @@ -362,7 +362,7 @@ triangle_ls(P1,P2,P3) -> triangle_ls_lp([],_,[],_,Out) -> Out; triangle_ls_lp(LSs1, P1, [], P2, Out) -> - SLSs = tri_ls_ysort(line_ls(P2,P1)), + SLSs = tri_ls_ysort(line_to_linespans(P2,P1,1)), N2 = length(SLSs), N1 = length(LSs1), if @@ -376,7 +376,7 @@ triangle_ls_lp(LSs1, P1, [], P2, Out) -> triangle_ls_lp(LSs1, SLSs, Out) end; triangle_ls_lp([], P1, LSs2, P2, Out) -> - SLSs = tri_ls_ysort(line_ls(P1,P2)), + SLSs = tri_ls_ysort(line_to_linespans(P1,P2,1)), N1 = length(SLSs), N2 = length(LSs2), if @@ -390,21 +390,21 @@ triangle_ls_lp([], P1, LSs2, P2, Out) -> triangle_ls_lp(SLSs, LSs2, Out) end; triangle_ls_lp([LS1|LSs1],P1,[LS2|LSs2],P2, Out) -> - {Y, Xl1, Xr1} = LS1, - {_, Xl2, Xr2} = LS2, + {Y, Xl1, Xr1,_Ca1} = LS1, + {_, Xl2, Xr2,_Ca2} = LS2, Xr = lists:max([Xl1,Xr1,Xl2,Xr2]), Xl = lists:min([Xl1,Xr1,Xl2,Xr2]), - triangle_ls_lp(LSs1,P1, LSs2, P2, [{Y,Xl,Xr}|Out]). + triangle_ls_lp(LSs1,P1,LSs2,P2,[{Y,Xl,Xr}|Out]). triangle_ls_lp([],[],Out) -> Out; triangle_ls_lp([],_,Out) -> Out; triangle_ls_lp(_,[],Out) -> Out; triangle_ls_lp([LS1|LSs1], [LS2|LSs2], Out) -> - {Y, Xl1, Xr1} = LS1, - {_, Xl2, Xr2} = LS2, + {Y, Xl1, Xr1, _Ca1} = LS1, + {_, Xl2, Xr2, _Ca2} = LS2, Xr = lists:max([Xl1,Xr1,Xl2,Xr2]), Xl = lists:min([Xl1,Xr1,Xl2,Xr2]), - triangle_ls_lp(LSs1, LSs2, [{Y,Xl,Xr}|Out]). + triangle_ls_lp(LSs1,LSs2,[{Y,Xl,Xr}|Out]). tri_pt_ysort(Pts) -> % {X,Y} @@ -414,9 +414,9 @@ tri_pt_ysort(Pts) -> end, Pts). tri_ls_ysort(LSs) -> - % {Y, Xl, Xr} + % {Y, Xl, Xr, Ca} lists:sort( - fun ({Y1,_,_},{Y2,_,_}) -> + fun ({Y1,_,_,_},{Y2,_,_,_}) -> if Y1 > Y2 -> false; true -> true end end, LSs). @@ -503,69 +503,74 @@ point_inside_triangle(P, P1, P2, P3) -> points_same_side(P, P2, P1, P3) and points_same_side(P, P3, P1, P2). -%% [{Y, Xl, Xr}] -ls_list2dict(List) -> ls_list2dict(List, dict:new()). -ls_list2dict([], D) -> D; -ls_list2dict([{Y, Xl, Xr}|Ls], D) -> - case dict:is_key(Y, D) of - false -> ls_list2dict(Ls, dict:store(Y, [{Xl, Xr}], D)); - true -> ls_list2dict(Ls, dict:append(Y, {Xl, Xr}, D)) - end. +%% [{Y, Xl, Xr}] -> #{Y := [{Xl,Xr}]} +%% Reorganize linspans to a map with Y as key. + +linespans_to_map(Ls) -> + linespans_to_map(Ls,#{}). +linespans_to_map([{Y,Xl,Xr,C}|Ls], M) -> + case M of + #{Y := Spans} -> linespans_to_map(Ls, M#{Y := [{Xl,Xr,C}|Spans]}); + _ -> linespans_to_map(Ls, M#{Y => [{Xl,Xr,C}]}) + end; +linespans_to_map([], M) -> + M. -%% line_ls + +%% line_to_linespans +%% Anti-aliased thick line +%% Do it CPS style %% In: %% P1 :: point() %% P2 :: point() %% Out: -%% {{Ymin,Ymax}, LSD :: line_step_data()} -%% Purpose: -%% Instead of points -> intervals - - -line_ls({Xi0, Yi0},{Xi1,Yi1}) -> - % swap X with Y if line is steep - Steep = abs(Yi1 - Yi0) > abs(Xi1 - Xi0), - - {Xs0, Ys0, Xs1, Ys1} = case Steep of - true -> {Yi0,Xi0,Yi1,Xi1}; - false -> {Xi0,Yi0,Xi1,Yi1} - end, - - {X0,Y0,X1,Y1} = case Xs0 > Xs1 of - true -> {Xs1,Ys1,Xs0,Ys0}; - false -> {Xs0,Ys0,Xs1,Ys1} - end, - - DX = X1 - X0, - DY = abs(Y1 - Y0), - - Error = -DX/2, - - Ystep = case Y0 < Y1 of - true -> 1; - false -> -1 - end, - line_ls_step(X0, X1,Y0, DX, DY, Ystep, Error, X0, Steep, []). - -%% line_ls_step_(not)_steep -%% In: -%% Out: -%% [{Yi, Xl,Xr}] -%% Purpose: -%% Produce an line_interval for each Yi (Y index) - -line_ls_step(X, X1, Y, Dx, Dy, Ys, E, X0, false = Steep, LSs) when X < X1, E >= 0 -> - line_ls_step(X+1,X1,Y+Ys,Dx,Dy,Ys, E - Dx + Dy, X+1, Steep, [{Y,X0,X}|LSs]); -line_ls_step(X, X1, Y, Dx, Dy, Ys, E, X0, false = Steep, LSs) when X < X1 -> - line_ls_step(X+1,X1,Y,Dx,Dy,Ys, E + Dy, X0, Steep, LSs); -line_ls_step(X, _X1, Y, _Dx, _Dy, _Ys, _E, X0, false, LSs) -> - [{Y,X0,X}|LSs]; -line_ls_step(X, X1, Y, Dx, Dy, Ys, E, _X0, true = Steep, LSs) when X =< X1, E >= 0 -> - line_ls_step(X+1,X1,Y+Ys,Dx,Dy,Ys, E - Dx + Dy, X, Steep, [{X,Y,Y}|LSs]); -line_ls_step(X, X1, Y, Dx, Dy, Ys, E, X0, true = Steep, LSs) when X =< X1 -> - line_ls_step(X+1,X1,Y,Dx,Dy,Ys,E + Dy, X0, Steep, [{X,Y,Y}|LSs]); -line_ls_step(_X,_,_Y,_Dx,_Dy,_Ys,_E,_X0,_,LSs) -> - LSs. +%% [{Y,Xl,Xr}] +%% +line_to_linespans({X0,Y0},{X1,Y1},Wd) -> + Dx = abs(X1-X0), + Dy = abs(Y1-Y0), + Sx = if X0 < X1 -> 1; true -> -1 end, + Sy = if Y0 < Y1 -> 1; true -> -1 end, + E0 = Dx - Dy, + Ed = if Dx + Dy =:= 0 -> 1; true -> math:sqrt(Dx*Dx + Dy*Dy) end, + line_to_ls(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E0,Ed,(Wd+1)/2,[]). + +line_to_ls(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls0) -> + C = max(0, 255*(abs(E - Dx+Dy)/Ed - Wd + 1)), + Ls1 = [{Y0,X0,X0,C}|Ls0], + line_to_ls_sx(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls1,E). + +line_to_ls_sx(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls,E2) when 2*E2 > -Dx -> + line_to_ls_sx_do(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls,E2+Dy,Y0); +line_to_ls_sx(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls,E2) -> + line_to_ls_sy(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls,E2,X0). + +line_to_ls_sx_do(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls0,E2,Y) when E2 < Ed*Wd andalso + (Y1 =/= Y orelse Dx > Dy) -> + Y2 = Y + Sy, + C = max(0,255*(abs(E2)/Ed-Wd+1)), + Ls = [{Y2,X0,X0,C}|Ls0], + line_to_ls_sx_do(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls,E2+Dx,Y2); +line_to_ls_sx_do(X0,_Y0,X1,_Y1,_Dx,_Dy,_Sx,_Sy,_E,_Ed,_Wd,Ls,_E2,_Y) when X0 =:= X1 -> + Ls; +line_to_ls_sx_do(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls,_E2,_Y) -> + line_to_ls_sy(X0+Sx,Y0,X1,Y1,Dx,Dy,Sx,Sy,E-Dy,Ed,Wd,Ls,E,X0). + +line_to_ls_sy(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls0,E2,X) when 2*E2 =< Dy -> + line_to_ls_sy_do(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls0,Dx-E2,X); +line_to_ls_sy(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls0,_E2,_X) -> + line_to_ls(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls0). + +line_to_ls_sy_do(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls0,E2,X) when E2 < Ed*Wd andalso + (X1 =/= X orelse Dx < Dy) -> + X2 = X + Sx, + C = max(0,255*(abs(E2)/Ed-Wd+1)), + Ls = [{Y0,X2,X2,C}|Ls0], + line_to_ls_sy_do(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls,E2+Dy,X2); +line_to_ls_sy_do(_X0,Y0,_X1,Y1,_Dx,_Dy,_Sx,_Sy,_E,_Ed,_Wd,Ls,_E2,_X) when Y0 =:= Y1 -> + Ls; +line_to_ls_sy_do(X0,Y0,X1,Y1,Dx,Dy,Sx,Sy,E,Ed,Wd,Ls0,_E2,_X) -> + line_to_ls(X0,Y0+Sy,X1,Y1,Dx,Dy,Sx,Sy,E+Dx,Ed,Wd,Ls0). % Text |