1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
module Rubyvis
module SvgScene
def self.area(scenes)
#e = scenes._g.elements[1]
e=scenes._g.get_element(1)
return e if scenes.size==0
s=scenes[0]
# segmented
return self.area_segment(scenes) if (s.segmented)
# visible
return e if (!s.visible)
fill = s.fill_style
stroke = s.stroke_style
return e if (fill.opacity==0 and stroke.opacity==0)
# Computes the straight path for the range [i, j]
path=lambda {|ii,j|
p1 = []
p2 = []
k=j
(ii..k).each {|i|
si = scenes[i]
sj = scenes[j]
pi = "#{si.left},#{si.top}"
pj = "#{(sj.left + sj.width)},#{(sj.top + sj.height)}"
puts "#{i}:"+pi+","+pj if $DEBUG
#/* interpolate */
if (i < k)
sk = scenes[i + 1]
sl = scenes[j - 1]
case (s.interpolate)
when "step-before"
pi = pi+"V#{sk.top}"
pj = pj+"H#{sl.left + sl.width}"
when "step-after"
pi = pi+"H#{sk.left}"
pj = pj+"V#{sl.top + sl.height}"
end
end
p1.push(pi)
p2.push(pj)
j=j-1
}
(p1+p2).join("L");
}
# @private Computes the curved path for the range [i, j]. */
path_curve=lambda {|ii, j|
pointsT = []
pointsB = []
pathT=nil
pathB=nil
k=j
(ii..k).each {|i|
sj = scenes[j];
pointsT.push(scenes[i])
pointsB.push(OpenStruct.new({:left=> sj.left + sj.width, :top=> sj.top + sj.height}))
j=j-1
}
if (s.interpolate == "basis")
pathT = Rubyvis::SvgScene.curve_basis(pointsT)
pathB = Rubyvis::SvgScene.curve_basis(pointsB)
elsif (s.interpolate == "cardinal")
pathT = Rubyvis::SvgScene.curve_cardinal(pointsT, s.tension);
pathB = Rubyvis::SvgScene.curve_cardinal(pointsB, s.tension);
elsif # monotone
pathT = Rubyvis::SvgScene.curve_monotone(pointsT);
pathB = Rubyvis::SvgScene.curve_monotone(pointsB);
end
"#{pointsT[0].left },#{ pointsT[0].top }#{ pathT }L#{ pointsB[0].left},#{pointsB[0].top}#{pathB}"
}
#/* points */
d = []
si=nil
sj=nil
i=0
# puts "Scenes:#{scenes.size}, interpolation:#{scenes[0].interpolate}"
while(i < scenes.size)
si = scenes[i]
if (si.width==0 and si.height==0)
i+=1
next
end
j=i+1
while(j<scenes.size) do
sj=scenes[j]
break if sj.width==0 and sj.height==0
j+=1
end
puts "j:#{j}" if $DEBUG
i=i-1 if (i!=0 and (s.interpolate != "step-after"))
j=j+1 if ((j < scenes.size) and (s.interpolate != "step-before"))
d.push(((j - i > 2 and (s.interpolate == "basis" or s.interpolate == "cardinal" or s.interpolate == "monotone")) ? path_curve : path).call(i, j - 1))
i = j - 1
i+=1
end
return e if d.size==0
e = self.expect(e, "path", {
"shape-rendering"=> s.antialias ? nil : "crispEdges",
"pointer-events"=> s.events,
"cursor"=> s.cursor,
"d"=> "M" + d.join("ZM") + "Z",
"fill"=> fill.color,
"fill-opacity"=> fill.opacity==0 ? nil : fill.opacity,
"stroke"=> stroke.color,
"stroke-opacity"=> stroke.opacity==0 ? nil : stroke.opacity,
"stroke-width"=> stroke.opacity!=0 ? s.line_width / self.scale : nil
})
self.append(e, scenes, 0);
end
def self.area_segment(scenes)
e=scenes._g.get_element(1)
#e = scenes._g.elements[1]
s = scenes[0]
pathsT=nil
pathsB=nil
if (s.interpolate == "basis" or s.interpolate == "cardinal" or s.interpolate == "monotone")
pointsT = []
pointsB = []
n=scenes.size
n.times {|i|
sj = scenes[n - i - 1]
pointsT.push(scenes[i])
pointsB.push(OpenStruct.new({:left=> sj.left + sj.width, :top=> sj.top + sj.height}));
}
if (s.interpolate == "basis")
pathsT = Rubyvis::SvgScene.curve_basis_segments(pointsT)
pathsB = Rubyvis::SvgScene.curve_basis_segments(pointsB)
elsif (s.interpolate == "cardinal")
pathsT = Rubyvis::SvgScene.curve_cardinal_segments(pointsT, s.tension);
pathsB = Rubyvis::SvgScene.curve_cardinal_segments(pointsB, s.tension);
elsif # monotone
pathsT = Rubyvis::SvgScene.curve_monotone_segments(pointsT)
pathsB = Rubyvis::SvgScene.curve_monotone_segments(pointsB)
end
end
n=scenes.size-1
n.times {|i|
s1 = scenes[i]
s2 = scenes[i + 1]
# /* visible */
next if (!s1.visible or !s2.visible)
fill = s1.fill_style
stroke = s1.stroke_style
next if (fill.opacity==0 and stroke.opacity==0)
d=nil
if (pathsT)
pathT = pathsT[i]
pb=pathsB[n - i - 1]
pathB = "L" + pb[1,pb.size-1]
d = pathT + pathB + "Z";
else
#/* interpolate */
si = s1
sj = s2
case (s1.interpolate)
when "step-before"
si = s2
when "step-after"
sj = s1
end
#/* path */
d = "M#{s1.left},#{si.top}L#{s2.left},#{sj.top }L#{s2.left + s2.width},#{sj.top + sj.height}L#{s1.left + s1.width},#{si.top + si.height}Z"
end
e = self.expect(e, "path", {
"shape-rendering"=> s1.antialias ? nil : "crispEdges",
"pointer-events"=> s1.events,
"cursor"=> s1.cursor,
"d"=> d,
"fill"=> fill.color,
"fill-opacity"=> fill.opacity==0 ? nil : fill.opacity,
"stroke"=> stroke.color,
"stroke-opacity"=> stroke.opacity==0 ? nil : stroke.opacity,
"stroke-width"=> stroke.opacity!=0 ? s1.line_width / self.scale : nil
});
e = self.append(e, scenes, i);
}
return e
end
end
end
|
