fix chevrons; update project structure

geopattern/lib.lua

@@ -3,7 +3,7 @@ local Svg = require "geopattern.svg"
 local base64 = require "geopattern.base64"
 local sha1 = require "geopattern.sha1.init"
 
-local PATTERNS = {'octogons', 'overlappingCircles', 'plusSigns', 'xes', 'sineWaves', 'hexagons', 'overlappingRings',
+GeoPattern.patterns = {'octogons', 'overlappingCircles', 'plusSigns', 'xes', 'sineWaves', 'hexagons', 'overlappingRings',
                   'plaid', 'triangles', 'squares', 'concentricCircles', 'diamonds', 'tessellation', 'nestedSquares',
                   'mosaicSquares', 'chevrons'}
 
@@ -177,9 +177,15 @@ function GeoPattern:new(str, options)
     }
 
     if options then
-        if options.generator then self.opts.generator = options.generator end
-        if options.color then self.opts.color = options.color end
-        if options.baseColor then self.opts.baseColor = options.baseColor end        
+        if options.generator then
+            self.opts.generator = options.generator
+        end
+        if options.color then
+            self.opts.color = options.color
+        end
+        if options.baseColor then
+            self.opts.baseColor = options.baseColor
+        end
     end
 
     self.hash = sha1.sha1(str)
@@ -215,7 +221,8 @@ function GeoPattern:generateBackground()
 
     self.color = rgb
     self.svg:rect(0, 0, '100%', '100%', {
-        fill = string.format('rgb(%d, %d, %d)', rgb[1] * 255, rgb[2] * 255, rgb[3] * 255)
+        fill = string.format('rgb(%d, %d, %d)', math.floor(rgb[1] * 255), math.floor(rgb[2] * 255),
+            math.floor(rgb[3] * 255))
     })
 end
 
@@ -244,14 +251,14 @@ function GeoPattern:generatePattern()
     local generator = self.opts.generator
 
     if generator then
-        if table.indexOf(PATTERNS, generator) < 0 then
+        if table.indexOf(self.patterns, generator) < 0 then
             error("Generator doesn't exist", 1)
         end
     else
-        local index = hexVal(self.hash, 20) % #PATTERNS + 1
-        generator = PATTERNS[index]
+        local index = hexVal(self.hash, 20) % #self.patterns + 1
+        generator = self.patterns[index]
     end
-    
+
     return self[generator](self);
 end
 
@@ -698,7 +705,7 @@ end
 local function buildChevronShape(width, height)
     local e = height * 0.66
     return string.format(
-               '<polyline point="%f, %f, %f, %f, %f, %f, %f, %f, %f, %f"></polyline><polyline point="%f, %f, %f, %f, %f, %f, %f, %f, %f, %f"></polyline>',
+               '<polyline points="%f, %f, %f, %f, %f, %f, %f, %f, %f, %f"></polyline><polyline points="%f, %f, %f, %f, %f, %f, %f, %f, %f, %f"></polyline>',
                0, 0, width / 2, height - e, width / 2, height, 0, e, 0, 0, width / 2, height - e, width, 0, width, e,
                width / 2, height, width / 2, height - e)
 end

geopattern/svg.lua

@@ -41,15 +41,34 @@ function Svg:toString()
     return table.concat({self:header(), self.svg_string, self:closer()}, '')
 end
 
+local function formattingSymbolAndNumber(number)
+    if type(number) == "number" then
+        return {
+            symbol = "%0.16f",
+            value = number
+        }
+    else
+        return {
+            symbol = "%s",
+            value = number
+        }
+    end
+end
+
 function Svg:rect(x, y, width, height, args)
-    local str = string.format('<rect x="%d" y="%d" width="%s" height="%s" %s/>', x, y, width, height,
-                    self:write_args(args))
+    local width = formattingSymbolAndNumber(width)
+    local height = formattingSymbolAndNumber(height)
+    local template = '<rect x="%f" y="%f" width="' .. width.symbol .. '" height="' .. height.symbol .. '" %s/>'
+    local str = template:format(x, y, width.value, height.value, self:write_args(args))
     self.svg_string = self.svg_string .. str
 end
 
 function Svg:circle(x, y, radius, args)
-    local str = string.format('<circle cx="%d" cy="%d" r="%d" %s/>', x, y, radius, self:write_args(args))
+    local radius = formattingSymbolAndNumber(radius)
+    local template = '<circle cx="%f" cy="%f" r="' .. radius.symbol .. '" %s/>'
+    local str = template:format(x, y, radius.value, self:write_args(args))
     self.svg_string = self.svg_string .. str
+
 end
 
 function Svg:path(str, args)

main.lua

@@ -1,5 +1,28 @@
+local GeoPattern = require "geopattern.lib"
 
-local GeoPattern = require "geopattern"
+local pattern1 = GeoPattern:new("GitHub") -- without options 
+local svg1 = pattern1:toSvg()
+
+local pattern2 = GeoPattern:new("GitHub", { generator = "concentricCircles" })
+local svg2 = pattern2:toSvg()
+
+local pattern3 = GeoPattern:new("GitHub", { color = "#00ffff" })
+local base64 = pattern3:toBase64()
+
+local options = {
+    generator = "concentricCircles",
+    color = "#00ffff", 
+    baseColor = "#af39b3"
+}
+local pattern4 = GeoPattern:new("GitHub", options) -- with all available options
+local svg4 = pattern4:toSvg()
+
+for i = 1, #GeoPattern.patterns do
+    local pattern = GeoPattern:new("GitHub", { generator = GeoPattern.patterns[i] })
+
+    pattern:toBase64()
+    local file = io.open(GeoPattern.patterns[i] .. ".svg", "w")
+    file:write(pattern:toSvg())
+    file:close()
+end
 
-local geo = GeoPattern:new("GitHubrahab")
-print(geo:toSvg())