Process SMIL directives in XML data: Difference between revisions
Process SMIL directives in XML data (view source)
Revision as of 16:58, 28 August 2021
, 2 years agoAdded Wren
(Added Wren) |
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Line 628:
<Appearance>
<Material diffuseColor="0.2 0.5599999999999999 0.8"/>
</Appearance>
</Shape>
</Scene>
</X3D>
</pre>
=={{header|Wren}}==
{{libheader|Wren-pattern}}
As Wren lacks any kind of XML support (let alone SMIL), I've had to resort to string parsing to complete this task.
<lang ecmascript>import "/pattern" for Pattern
var xml = """
<?xml version="1.0" ?>
<smil>
<X3D>
<Scene>
<Viewpoint position="0 0 8" orientation="0 0 1 0"/>
<PointLight color='1 1 1' location='0 2 0'/>
<Shape>
<Box size='2 1 2'>
<animate attributeName="size" from="2 1 2"
to="1 2 1" begin="0s" dur="10s"/>
</Box>
<Appearance>
<Material diffuseColor='0.0 0.6 1.0'>
<animate attributeName="diffuseColor" from="0.0 0.6 1.0"
to="1.0 0.4 0.0" begin="0s" dur="10s"/>
</Material>
</Appearance>
</Shape>
</Scene>
</X3D>
</smil>
"""
var extractValue = Fn.new { |s| s.replace("\"", "").split("=")[1] }
var interpolate = Fn.new { |from, to, begin, dur, t|
if (begin >= t) return from
if (begin + t >= dur) return to
var mid = List.filled(3, 0)
for (i in 0..2) {
mid[i] = (from[i] * (dur - t) + to[i] * (t - begin)) / (dur - begin)
}
return mid
}
var smil = xml.indexOf("smil") > -1
if (!smil) {
System.print(xml)
return
}
xml = xml.replace("<smil>\n", "").replace("\n</smil>", "")
var animate = Pattern.new("<animate +1^///>")
var matches = animate.findAll(xml)
var mcount = matches.count
if (mcount == 0) {
System.print(xml)
return
}
var elem = List.filled(mcount, null)
var attr = List.filled(mcount, null)
var from = List.filled(mcount, null)
var to = List.filled(mcount, null)
var begin = List.filled(mcount, 0)
var dur = List.filled(mcount, 0)
for (i in 0...mcount) {
var match = matches[i]
xml = xml.replace(match.text + "\n", "")
var p = Pattern.new("+1/s")
var items = p.splitAll(match.text[1..-3])
attr[i] = extractValue.call(items[1])
from[i] = [0] * 3
from[i][0] = Num.fromString(items[2].replace("from=\"", ""))
from[i][1] = Num.fromString(items[3])
from[i][2] = Num.fromString(items[4].replace("\"", ""))
to[i] = [0] * 3
to[i][0] = Num.fromString(items[5].replace("to=\"", ""))
to[i][1] = Num.fromString(items[6])
to[i][2] = Num.fromString(items[7].replace("\"", ""))
begin[i] = Num.fromString(extractValue.call(items[8]).replace("s", ""))
dur[i] = Num.fromString(extractValue.call(items[9]).replace("s", ""))
p = Pattern.new("<[+1/w] %(attr[i])/='[+1^']'>")
var matches2 = p.find(xml)
elem[i] = matches2.capsText[0]
p = Pattern.new(">\n+1/s<//%(elem[i])>")
xml = p.replaceAll(xml, "/>")
}
for (t in [0, 2]) {
var xml2 = xml
for (i in 0...mcount) {
var p = Pattern.new("<%(elem[i]) %(attr[i])/='[+1^']'//>")
var sfrom = p.find(xml2).capsText[0]
var mid = interpolate.call(from[i], to[i], begin[i], dur[i], t)
var smid = mid.map { |n| n.toString }.join(" ")
xml2 = xml2.replace("<%(elem[i]) %(attr[i])='%(sfrom)'/>", "<%(elem[i]) %(attr[i])='%(smid)'/>")
}
System.print("At t = %(t) seconds:\n")
System.print(xml2)
System.print()
}</lang>
{{out}}
<pre>
At t = 0 seconds:
<?xml version="1.0" ?>
<X3D>
<Scene>
<Viewpoint position="0 0 8" orientation="0 0 1 0"/>
<PointLight color='1 1 1' location='0 2 0'/>
<Shape>
<Box size='2 1 2'/>
<Appearance>
<Material diffuseColor='0 0.6 1'/>
</Appearance>
</Shape>
</Scene>
</X3D>
At t = 2 seconds:
<?xml version="1.0" ?>
<X3D>
<Scene>
<Viewpoint position="0 0 8" orientation="0 0 1 0"/>
<PointLight color='1 1 1' location='0 2 0'/>
<Shape>
<Box size='1.8 1.2 1.8'/>
<Appearance>
<Material diffuseColor='0.2 0.56 0.8'/>
</Appearance>
</Shape>
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