Process SMIL directives in XML data: Difference between revisions
Process SMIL directives in XML data (view source)
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{{draft task}}
In order to represent evolutions of
* [[wp:Synchronized_Multimedia_Integration_Language|SMIL on Wikipedia]] and [http://www.w3.org/TR/SMIL/smil-animation.html#q35 at W3]
The task is to create an utility that given the first Smiled XML file, would return the following ones:
<
<smil>
<X3D>
Line 17 ⟶ 13:
<Viewpoint position="0 0 8" orientation="0 0 1 0"/>
<PointLight color='1 1 1' location='0 2 0'/>
<Shape>
<
<
to="1 2 1" begin="0s" dur="10s"/>
</Box>
<
<
to="1.0 0.4 0.0" begin="0s" dur="10s"/>
</Material>
</Scene>
</X3D
</smil></syntaxhighlight>
At t = 0 second here is the expected output:
<
<X3D>
<Scene>
<Viewpoint position="0 0 8" orientation="0 0 1 0"/>
<PointLight color='1 1 1' location='0 2 0'/>
<Shape>
<
<
</Appearance>
</Scene>
</X3D></
At t = 2 second here is the expected output:
<syntaxhighlight lang="xml"><?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>
</Scene>
</X3D></syntaxhighlight>
=={{header|Go}}==
{{libheader|etree}}
<syntaxhighlight lang="go">package main
import (
"fmt"
"github.com/beevik/etree"
"log"
"os"
"strconv"
"strings"
)
type animData struct {
element *etree.Element
attrib string
from string
to string
begin float64
dur float64
}
func check(err error) {
if err != nil {
log.Fatal(err)
}
}
func (ad *animData) AtTime(t float64) string {
beg := ad.begin
end := beg + ad.dur
if t < beg || t > end {
log.Fatalf("time must be in interval [%g, %g]", beg, end)
}
fromSplit := strings.Fields(ad.from)
toSplit := strings.Fields(ad.to)
le := len(fromSplit)
interSplit := make([]string, le)
for i := 0; i < le; i++ {
fromF, err := strconv.ParseFloat(fromSplit[i], 64)
check(err)
toF, err := strconv.ParseFloat(toSplit[i], 64)
check(err)
interF := (fromF*(end-t) + toF*(t-beg)) / ad.dur
interSplit[i] = fmt.Sprintf("%.2f", interF)
}
return strings.Join(interSplit, " ")
}
func main() {
doc := etree.NewDocument()
check(doc.ReadFromFile("smil.xml"))
smil := doc.SelectElement("smil")
if smil == nil {
log.Fatal("'smil' element not found")
}
x3d := smil.SelectElement("X3D")
if x3d == nil {
log.Fatal("'X3D' element not found")
}
doc.SetRoot(x3d) // remove 'smil' element
var ads []*animData
for _, a := range doc.FindElements("//animate") {
attrib := a.SelectAttrValue("attributeName", "?")
from := a.SelectAttrValue("from", "?")
to := a.SelectAttrValue("to", "?")
beginS := a.SelectAttrValue("begin", "?")
durS := a.SelectAttrValue("dur", "?")
if attrib == "?" || from == "?" || to == "?" ||
beginS == "?" || durS == "?" {
log.Fatal("an animate element has missing attribute(s)")
}
begin, err := strconv.ParseFloat(beginS[:len(beginS)-1], 64)
check(err)
dur, err := strconv.ParseFloat(durS[:len(durS)-1], 64)
check(err)
p := a.Parent()
if p == nil {
log.Fatal("an animate element has no parent")
}
pattrib := p.SelectAttrValue(attrib, "?")
if pattrib == "?" {
log.Fatal("an animate element's parent has missing attribute")
}
ads = append(ads, &animData{p, attrib, from, to, begin, dur})
p.RemoveChild(a) // remove 'animate' element
}
ts := []float64{0, 2}
for _, t := range ts {
for _, ad := range ads {
s := ad.AtTime(t)
ad.element.CreateAttr(ad.attrib, s)
}
doc.Indent(2)
fmt.Printf("At time = %g seconds:\n\n", t)
doc.WriteTo(os.Stdout)
fmt.Println()
}
}</syntaxhighlight>
{{out}}
<pre>
At time = 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="2.00 1.00 2.00"/>
<Appearance>
<Material diffuseColor="0.00 0.60 1.00"/>
</Appearance>
</Shape>
</Scene>
</X3D>
At time = 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="1.80 1.20 1.80"/>
<Appearance>
<Material diffuseColor="0.20 0.56 0.80"/>
</Appearance>
</Shape>
</Scene>
</X3D>
</pre>
=={{header|Nim}}==
<syntaxhighlight lang="nim">import sequtils, strformat, strtabs, strutils, xmlparser, xmltree
type
Animation = object
attrName: string # Attribute to animate.
fromValues: seq[float] # List of "from" values.
toValues: seq[float] # List of "to" values.
begin: float # Animation starting time.
duration: float # Animation duration.
func getAnim(node: XmlNode): Animation =
## Build an animation object from an XML node.
result.attrName = node.attr("attributeName")
if result.attrName.len == 0:
raise newException(ValueError, "missing 'attributeName' attribute")
var str = node.attr("from")
if str.len == 0:
raise newException(ValueError, "missing 'from' attribute")
result.fromValues = str.splitWhitespace().map(parseFloat)
str = node.attr("to")
if str.len == 0:
raise newException(ValueError, "missing 'to' attribute")
result.toValues = str.splitWhitespace().map(parseFloat)
if result.fromValues.len != result.toValues.len:
raise newException(ValueError, "inconsistent number of values")
str = node.attr("begin")
if str.len == 0:
raise newException(ValueError, "missing 'begin' attribute")
if str[^1] != 's':
raise newException(ValueError, "missing unit")
result.begin = parseFloat(str[0..^2])
str = node.attr("dur")
if str.len == 0:
raise newException(ValueError, "missing 'dur' attribute")
if str[^1] != 's':
raise newException(ValueError, "missing unit")
result.duration = parseFloat(str[0..^2])
func buildXml(node: XmlNode; t: float): XmlNode =
## Build the XML tree of a SMIL animation at time "t".
if node.len > 0 and node[0].tag == "animate":
# Child is an animate node.
let anim = node[0].getAnim()
# Check attribute name.
if node.attr(anim.attrName).len == 0:
raise newException(ValueError, &"unable to find attribute '{anim.attrName}'")
# Check time.
if t notin anim.begin..(anim.begin + anim.duration):
raise newException(ValueError, "time value out of range")
# Build attribute value.
var aVal = newSeq[float](anim.fromValues.len)
for i in 0..aVal.high:
aVal[i] = (anim.fromValues[i] * (anim.begin + anim.duration - t) +
anim.toValues[i] * (t - anim.begin)) / anim.duration
# Set attributes.
let a = node.attrs
a[anim.attrName] = aVal.mapIt(it.formatFloat(ffDefault, 2)).join(" ")
result = newElement(node.tag)
result.attrs = a
else:
# Node child (if any) is not an animate node: copy the node and process children.
result = newElement(node.tag)
result.attrs = node.attrs
for child in node:
result.add child.buildXml(t)
when isMainModule:
let smil = loadXml("smil.xml")
if smil.tag != "smil":
raise newException(ValueError, "not a SMIL file")
let newRoot = smil[0]
echo "At time 0 second:\n"
echo xmlHeader, newRoot.buildXml(0)
echo "\nAt time 2 seconds:\n"
echo xmlHeader, newRoot.buildXml(2)</syntaxhighlight>
{{out}}
<pre>At time 0 second:
<?xml version="1.0" encoding="UTF-8" ?>
<X3D>
<Scene>
<Viewpoint position="0 0 8" orientation="0 0 1 0" />
<PointLight color="1 1 1" location="0 2 0" />
<Shape>
<Box size="2.0 1.0 2.0" />
<Appearance>
<Material diffuseColor="0.0 0.60 1.0" />
</Appearance>
</Shape>
</Scene>
</X3D>
At time 2 seconds:
<?xml version="1.0" encoding="UTF-8" ?>
<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="0.20 0.56 0.80" />
</Appearance>
</Shape>
</Scene>
</X3D></pre>
=={{header|Perl}}==
{{trans|Raku}}
<syntaxhighlight lang="perl"># 20201101 added Perl programming solution
use 5.014; # for s///r;
use strict;
use warnings;
BEGIN {
package Animatee;
use Moo;
has [qw(todo begin dur from to)] => ( is => 'rw');
$INC{"Animatee.pm"} = 1;
}
use Animatee;
use XML::Twig;
use List::AllUtils 'pairwise';
my $smil = <<'DATA';
<?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>
DATA
my %Parents;
my $x = XML::Twig->new->parse($smil);
for my $node ($x->findnodes("//animate")) {
my $y = $node->parent;
exists($Parents{$y}) ? (die) : ($Parents{my $k = $y->getName} = Animatee->new);
for my $animatee ($y->getChildNodes) {
my %h = %{$animatee->atts};
$Parents{$k}->todo($h{attributeName});
$Parents{$k}->from([ split(/\s+/,$h{from}) ]);
$Parents{$k}->to([ split(/\s+/,$h{to}) ]);
$Parents{$k}->begin( $h{begin} =~ m/\d+/g);
$Parents{$k}->dur ( $h{dur} =~ m/\d+/g);
}
}
my $z = XML::Twig->new->parse($smil =~ s/\<\/?smil\>//gr) or die;
for my $t ( 0, 2, 4 ) {
my $clone = $z;
while ( my( $k,$v ) = each %Parents) {
my @incre = pairwise { ($a-$b)/$v->dur } @{$v->to}, @{$v->from};
for my $f ($clone->findnodes("//$k")) {
my $c = join (' ', pairwise { $a+$b*$t } @{$v->from}, @incre);
$f->set_att($v->todo,$c);
}
for my $f ($clone->findnodes("//animate")) {
$f->delete
}
}
print "when t = $t\n";
print $clone->sprint,"\n";
}</syntaxhighlight>
{{out}}
<pre>when t = 0
<?xml version="1.0"?>
<X3D><Scene><Viewpoint orientation="0 0 1 0" position="0 0 8"/><PointLight color="1 1 1" location="0 2 0"/><Shape><Box size="2 1 2"></Box><Appearance><Material diffuseColor="0 0.6 1"></Material></Appearance></Shape></Scene></X3D>
when t = 2
<?xml version="1.0"?>
<X3D><Scene><Viewpoint orientation="0 0 1 0" position="0 0 8"/><PointLight color="1 1 1" location="0 2 0"/><Shape><Box size="1.8 1.2 1.8"></Box><Appearance><Material diffuseColor="0.2 0.56 0.8"></Material></Appearance></Shape></Scene></X3D>
when t = 4
<?xml version="1.0"?>
<X3D><Scene><Viewpoint orientation="0 0 1 0" position="0 0 8"/><PointLight color="1 1 1" location="0 2 0"/><Shape><Box size="1.6 1.4 1.6"></Box><Appearance><Material diffuseColor="0.4 0.52 0.6"></Material></Appearance></Shape></Scene></X3D></pre>
=={{header|Phix}}==
<!--<syntaxhighlight lang="phix">(phixonline)-->
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
<span style="color: #008080;">include</span> <span style="color: #000000;">builtins</span><span style="color: #0000FF;">\</span><span style="color: #000000;">xml</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span>
<span style="color: #008080;">constant</span> <span style="color: #000000;">xml</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">"""
<?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>
"""</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">animate_contents</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">doc</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">atom</span> <span style="color: #000000;">t</span><span style="color: #0000FF;">)</span>
<span style="color: #000000;">doc</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">deep_copy</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">sequence</span> <span style="color: #000000;">a</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">xml_get_nodes</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"animate"</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">a</span><span style="color: #0000FF;">={}</span> <span style="color: #008080;">then</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">])</span> <span style="color: #008080;">do</span>
<span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">animate_contents</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">i</span><span style="color: #0000FF;">],</span><span style="color: #000000;">t</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #008080;">else</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">])</span> <span style="color: #008080;">do</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">i</span><span style="color: #0000FF;">][</span><span style="color: #000000;">XML_TAGNAME</span><span style="color: #0000FF;">]=</span><span style="color: #008000;">"animate"</span> <span style="color: #008080;">then</span>
<span style="color: #004080;">string</span> <span style="color: #000000;">name</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">xml_get_attribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">i</span><span style="color: #0000FF;">],</span><span style="color: #008000;">"attributeName"</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">vfrm</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">xml_get_attribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">i</span><span style="color: #0000FF;">],</span><span style="color: #008000;">"from"</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">v_to</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">xml_get_attribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">i</span><span style="color: #0000FF;">],</span><span style="color: #008000;">"to"</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">sbeg</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">xml_get_attribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">i</span><span style="color: #0000FF;">],</span><span style="color: #008000;">"begin"</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">sdur</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">xml_get_attribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">i</span><span style="color: #0000FF;">],</span><span style="color: #008000;">"dur"</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">sequence</span> <span style="color: #000000;">from</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">apply</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #000000;">vfrm</span><span style="color: #0000FF;">),</span><span style="color: #7060A8;">to_number</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">to_s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">apply</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #000000;">v_to</span><span style="color: #0000FF;">),</span><span style="color: #7060A8;">to_number</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">begin</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">to_number</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">trim_tail</span><span style="color: #0000FF;">(</span><span style="color: #000000;">sbeg</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"s"</span><span style="color: #0000FF;">)),</span>
<span style="color: #000000;">durat</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">to_number</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">trim_tail</span><span style="color: #0000FF;">(</span><span style="color: #000000;">sdur</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"s"</span><span style="color: #0000FF;">)),</span>
<span style="color: #000000;">fj</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">begin</span><span style="color: #0000FF;">+</span><span style="color: #000000;">durat</span><span style="color: #0000FF;">-</span><span style="color: #000000;">t</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">tj</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">t</span><span style="color: #0000FF;">-</span><span style="color: #000000;">begin</span>
<span style="color: #000080;font-style:italic;">-- plenty more error handling possible here...</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">tj</span><span style="color: #0000FF;"><</span><span style="color: #000000;">0</span> <span style="color: #008080;">or</span> <span style="color: #000000;">fj</span><span style="color: #0000FF;"><</span><span style="color: #000000;">0</span> <span style="color: #008080;">or</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">from</span><span style="color: #0000FF;">)!=</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">to_s</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span> <span style="color: #0000FF;">?</span><span style="color: #000000;">9</span><span style="color: #0000FF;">/</span><span style="color: #000000;">0</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">j</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">from</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
<span style="color: #000000;">from</span><span style="color: #0000FF;">[</span><span style="color: #000000;">j</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sprintf</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"%.2f"</span><span style="color: #0000FF;">,(</span><span style="color: #000000;">from</span><span style="color: #0000FF;">[</span><span style="color: #000000;">j</span><span style="color: #0000FF;">]*</span><span style="color: #000000;">fj</span><span style="color: #0000FF;">+</span><span style="color: #000000;">to_s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">j</span><span style="color: #0000FF;">]*</span><span style="color: #000000;">tj</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">durat</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #000000;">doc</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">xml_set_attribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">,</span><span style="color: #000000;">name</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">join</span><span style="color: #0000FF;">(</span><span style="color: #000000;">from</span><span style="color: #0000FF;">,</span><span style="color: #008000;">" "</span><span style="color: #0000FF;">))</span>
<span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">i</span><span style="color: #0000FF;">..</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">""</span> <span style="color: #000080;font-style:italic;">-- remove 'animate'</span>
<span style="color: #008080;">exit</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">doc</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">animate</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">doc</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">atom</span> <span style="color: #000000;">t</span><span style="color: #0000FF;">)</span>
<span style="color: #000000;">doc</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">deep_copy</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">)</span>
<span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> <span style="color: #000080;font-style:italic;">-- remove smil</span>
<span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">animate_contents</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">],</span><span style="color: #000000;">t</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">doc</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #004080;">sequence</span> <span style="color: #000000;">doc</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">xml_parse</span><span style="color: #0000FF;">(</span><span style="color: #000000;">xml</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_DOCUMENT</span><span style="color: #0000FF;">]!=</span><span style="color: #008000;">"document"</span>
<span style="color: #008080;">or</span> <span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">XML_TAGNAME</span><span style="color: #0000FF;">]!=</span><span style="color: #008000;">"smil"</span>
<span style="color: #008080;">or</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">])!=</span><span style="color: #000000;">1</span>
<span style="color: #008080;">or</span> <span style="color: #000000;">doc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">XML_CONTENTS</span><span style="color: #0000FF;">][</span><span style="color: #000000;">1</span><span style="color: #0000FF;">][</span><span style="color: #000000;">XML_TAGNAME</span><span style="color: #0000FF;">]!=</span><span style="color: #008000;">"X3D"</span> <span style="color: #008080;">then</span>
<span style="color: #0000FF;">?</span><span style="color: #000000;">9</span><span style="color: #0000FF;">/</span><span style="color: #000000;">0</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"At time = 0:\n\n"</span><span style="color: #0000FF;">)</span>
<span style="color: #7060A8;">puts</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">xml_sprint</span><span style="color: #0000FF;">(</span><span style="color: #000000;">animate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">)))</span>
<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\nAt time = 2:\n\n"</span><span style="color: #0000FF;">)</span>
<span style="color: #7060A8;">puts</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">xml_sprint</span><span style="color: #0000FF;">(</span><span style="color: #000000;">animate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">doc</span><span style="color: #0000FF;">,</span><span style="color: #000000;">2</span><span style="color: #0000FF;">)))</span>
<!--</syntaxhighlight>-->
{{out}}
<pre>
At time = 0:
<?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="2.00 1.00 2.00" />
<Appearance>
<Material diffuseColor="0.00 0.60 1.00" />
</Appearance>
</Shape>
</Scene>
</X3D>
At time = 2:
<?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="1.80 1.20 1.80" />
<Appearance>
<Material diffuseColor="0.20 0.56 0.80" />
</Appearance>
</Shape>
</Scene>
</X3D>
</pre>
=={{header|Raku}}==
(formerly Perl 6)
A crude attempt that only works with task data.
<syntaxhighlight lang="raku" line>use XML::XPath;
my $smil = q:to<DATA>; # cramped verison, modified from task data
<?xml version="1.0" ?> <smil><X3D><Scene><Viewpoint position="0 0 8" orientation="0 0 1 0" /><PointLight color="1 1 1" location="0 2 0" /><Shape><Box size="2 1 2"><animate attributeName="size" from="2 1 2" to="1 2 1" begin="0s" dur="10s" /></Box><Appearance><Material diffuseColor="0.0 0.6 1.0"><animate attributeName="diffuseColor" from="0.0 0.6 1.0" to="1.0 0.4 0.0" begin="0s" dur="10s" /></Material></Appearance></Shape></Scene></X3D></smil>
DATA
class Animatee { has ($.todo, @.from, @.to, $.begin, $.dur) is rw };
my %Parents; # keys store the parent tags that got <animate> child
my $x = XML::XPath.new(xml => $smil) or die;
for @($x.find("//animate")) { # strangely need .List or @ coercion to work
my $y = .parent.name;
%Parents{$y}:exists ?? die() !! %Parents{$y} = Animatee.new; # unique only
for .parent.elements {
%Parents{$y}.todo = .attribs<attributeName>;
%Parents{$y}.from = .attribs<from>.split(/\s+/);
%Parents{$y}.to = .attribs<to>.split(/\s+/);
%Parents{$y}.begin = .attribs<begin>.match(/\d+/);
%Parents{$y}.dur = .attribs<dur>.match(/\d+/);
}
}
# use regex to strip SMIL tag and create a master template; sub-optimal approach
my $z = XML::XPath.new(xml => $smil.subst(/\<\/?smil\>/,'',:g:ii:ss)) or die;
for 0, 2, 4 -> $t { # task requires 0 & 2 only
my $clone = $z.clone; # work on a copy
for %Parents.kv -> $k,$v {
my @incre = ($v.to »-« $v.from) »/» $v.dur; # increment list
with $clone.find("//$k") { # moving attribute = @from + @increment*$t
.attribs{%Parents{$_.name}.todo} = $v.from »+« @incre »*» $t;
.removeChild($_); # ditch <animate> and friends
}
}
say "when t = ", $t;
say $clone.find("/");
}</syntaxhighlight>
{{out}}
<pre>when t = 0
<?xml version="1.0"?><X3D><Scene><Viewpoint position="0 0 8" orientation="0 0 1 0"/><PointLight location="0 2 0" color="1 1 1"/><Shape><Box size="2 1 2"/><Appearance><Material diffuseColor="0 0.6 1"/></Appearance></Shape></Scene></X3D>
when t = 2
<?xml version="1.0"?><X3D><Scene><Viewpoint position="0 0 8" orientation="0 0 1 0"/><PointLight location="0 2 0" color="1 1 1"/><Shape><Box size="1.8 1.2 1.8"/><Appearance><Material diffuseColor="0.2 0.56 0.8"/></Appearance></Shape></Scene></X3D>
when t = 4
<?xml version="1.0"?><X3D><Scene><Viewpoint position="0 0 8" orientation="0 0 1 0"/><PointLight location="0 2 0" color="1 1 1"/><Shape><Box size="1.6 1.4 1.6"/><Appearance><Material diffuseColor="0.4 0.52 0.6"/></Appearance></Shape></Scene></X3D>
</pre>
=={{header|Tcl}}==
{{works with|Tcl|8.6}}
{{libheader|tDOM}}
<syntaxhighlight lang="tcl">package require Tcl 8.6
package require tdom
# Applies a time-based interpolation to generate a space-separated list
proc interpolate {time info} {
dict with info {
scan $begin "%fs" begin
scan $dur "%fs" dur
}
if {$time < $begin} {
return $from
} elseif {$time > $begin+$dur} {
return $to
}
set delta [expr {($time - $begin) / $dur}]
return [lmap f $from t $to {expr {$f + ($t-$f)*$delta}}]
}
# Applies SMIL <transform> elements to their container
proc applySMILtransform {sourceDocument time} {
set doc [dom parse [$sourceDocument asXML]]
foreach smil [$doc selectNodes //smil] {
foreach context [$smil selectNodes {//*[animate]}] {
set animator [$context selectNodes animate]
set animated [$context selectNodes @[$animator @attributeName]]
$context removeChild $animator
$context setAttribute [$animator @attributeName] \
[interpolate $time [lindex [$animator asList] 1]]
}
if {[$smil parentNode] eq ""} {
set reparent 1
} else {
[$smil parentNode] replaceChild $smil [$smil firstChild]
}
}
if {[info exist reparent]} {
set doc [dom parse [[$smil firstChild] asXML]]
}
return $doc
}
set t [expr {[lindex $argv 0] + 0.0}]
set result [applySMILtransform [dom parse [read stdin]] $t]
puts {<?xml version="1.0" ?>}
puts -nonewline [$result asXML -indent 2]</syntaxhighlight>
{{out|Demonstration}}
Note that <tt>input.smil</tt> contains the source document from the task description.
<pre>
$ tclsh8.6 applySmil.tcl 0 < input.smil
<?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="2.0 1.0 2.0"/>
<Appearance>
<Material diffuseColor="0.0 0.6 1.0"/>
</Appearance>
</Shape>
</Scene>
</X3D>
$ tclsh8.6 applySmil.tcl 2 < input.smil
<?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 0.5599999999999999 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.
<syntaxhighlight lang="wren">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()
}</syntaxhighlight>
{{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:
<X3D>
<Scene>
<Viewpoint position="0 0 8" orientation="0 0 1 0"/>
<PointLight color='1 1 1' location='0 2 0'/>
<Shape>
<
<
</Appearance>
</Scene>
</X3D
</pre>
| |||