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1 changed files with 94 additions and 69 deletions
163
traceur.xsl
163
traceur.xsl
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@ -6,162 +6,187 @@
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<xsl:output method="xml" indent="yes" />
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<!-- Déclaration des variables initiales -->
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<xsl:variable name="initial-x" select="0" as="xs:double" />
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<xsl:variable
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<xsl:variable name="initial-x" select="0" as="xs:double" />
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<xsl:variable
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name="initial-y" select="0" as="xs:double" />
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<xsl:variable name="initial-angle" select="0"
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<xsl:variable name="initial-angle" select="0"
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as="xs:double" />
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<xsl:template match="/tortue">
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<xsl:template match="/tortue">
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<xsl:processing-instruction name="xml-model">href="traceur.xsd"</xsl:processing-instruction>
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<traceur>
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<!-- Appel du template pour traiter les commandes avec les valeurs initiales des
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paramètres -->
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<traceur>
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<!-- Appel du template pour traiter les commandes
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avec les valeurs initiales des paramètres -->
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<xsl:call-template name="process-commands">
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<xsl:with-param name="commands" select="*" />
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<xsl:with-param name="x"
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<xsl:with-param name="commands"
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select="*" />
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<xsl:with-param name="x"
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select="$initial-x" />
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<xsl:with-param
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name="y" select="$initial-y" />
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<xsl:with-param
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<xsl:with-param name="y"
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select="$initial-y" />
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<xsl:with-param
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name="angle" select="$initial-angle" />
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<xsl:with-param name="states" select="()" />
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<xsl:with-param name="states"
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select="()" />
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</xsl:call-template>
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</traceur>
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</xsl:template>
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<!-- Template récursif pour traiter les commandes individuelles -->
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<xsl:template
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<xsl:template
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name="process-commands">
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<xsl:param name="commands" />
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<xsl:param name="x" />
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<xsl:param name="y" />
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<xsl:param
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<xsl:param
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name="commands" />
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<xsl:param
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name="x" />
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<xsl:param
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name="y" />
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<xsl:param
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name="angle" />
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<xsl:param
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<xsl:param
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name="states" />
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<!-- Si il reste des commandes à traiter -->
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<xsl:if test="$commands">
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<xsl:if test="$commands">
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<!-- Sélection de la première commande à traiter -->
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<xsl:variable
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name="current-command" select="$commands[1]" />
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<xsl:choose>
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<xsl:variable name="current-command"
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select="$commands[1]" />
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<xsl:choose>
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<!-- Si la commande est une ligne -->
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<xsl:when test="local-name($current-command) = 'line'">
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<!-- Calcul de la distance à parcourir et conversion de l'angle en radians -->
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<xsl:variable name="distance"
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<xsl:variable name="distance"
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select="number($current-command)" />
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<xsl:variable name="radians"
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<xsl:variable name="radians"
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select="$angle * math:pi() div 180" />
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<xsl:variable name="new-x"
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<xsl:variable name="new-x"
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select="$x + $distance * math:cos($radians)" />
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<xsl:variable name="new-y"
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<xsl:variable name="new-y"
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select="$y + $distance * math:sin($radians)" />
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<!-- Création de l'élément LINETO avec les nouvelles coordonnées calculées -->
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<LINETO
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<LINETO
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x="{format-number($new-x, '#.######')}"
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y="{format-number($new-y, '#.######')}" />
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<!-- Rappel récursif du template avec la mise à jour des coordonnées et des
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commandes restantes -->
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<xsl:call-template
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<xsl:call-template
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name="process-commands">
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<xsl:with-param name="commands" select="$commands[position() > 1]" />
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<xsl:with-param
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<xsl:with-param
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name="commands" select="$commands[position() > 1]" />
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<xsl:with-param
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name="x" select="$new-x" />
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<xsl:with-param name="y" select="$new-y" />
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<xsl:with-param
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<xsl:with-param
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name="y" select="$new-y" />
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<xsl:with-param
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name="angle" select="$angle" />
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<xsl:with-param name="states" select="$states" />
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<xsl:with-param
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name="states" select="$states" />
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</xsl:call-template>
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</xsl:when>
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<!-- Si la commande est un turn -->
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<xsl:when test="local-name($current-command) = 'turn'">
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<!-- Calcul du nouvel angle avec modulo 360 pour rester dans un cercle complet -->
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<xsl:variable
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name="new-angle" select="($angle + number($current-command)) mod 360" />
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<xsl:variable name="new-angle"
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select="($angle + number($current-command)) mod 360" />
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<!-- Rappel récursif du template sans changer de position mais en mettant à jour
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l'angle -->
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<xsl:call-template
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<xsl:call-template
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name="process-commands">
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<xsl:with-param name="commands" select="$commands[position() > 1]" />
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<xsl:with-param
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<xsl:with-param
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name="commands" select="$commands[position() > 1]" />
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<xsl:with-param
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name="x" select="$x" />
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<xsl:with-param name="y" select="$y" />
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<xsl:with-param
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<xsl:with-param
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name="y" select="$y" />
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<xsl:with-param
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name="angle" select="$new-angle" />
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<xsl:with-param name="states"
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<xsl:with-param name="states"
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select="$states" />
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</xsl:call-template>
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</xsl:when>
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<!-- Si la commande est un MOVE -->
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<xsl:when test="local-name($current-command) = 'move'">
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<!-- Calcul de la distance à parcourir et conversion de l'angle en radians -->
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<xsl:variable name="distance"
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<xsl:variable name="distance"
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select="number($current-command)" />
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<xsl:variable name="radians"
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<xsl:variable name="radians"
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select="$angle * math:pi() div 180" />
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<xsl:variable name="new-x"
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<xsl:variable name="new-x"
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select="$x + $distance * math:cos($radians)" />
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<xsl:variable name="new-y"
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<xsl:variable name="new-y"
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select="$y + $distance * math:sin($radians)" />
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<!-- Création de l'élément MOVETO avec les nouvelles coordonnées calculées -->
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<MOVETO
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<MOVETO
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x="{format-number($new-x, '#.######')}"
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y="{format-number($new-y, '#.######')}" />
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<!-- Rappel récursif du template avec la mise à jour des coordonnées et des
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commandes restantes -->
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<xsl:call-template
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<xsl:call-template
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name="process-commands">
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<xsl:with-param name="commands" select="$commands[position() > 1]" />
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<xsl:with-param
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<xsl:with-param
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name="commands" select="$commands[position() > 1]" />
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<xsl:with-param
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name="x" select="$new-x" />
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<xsl:with-param name="y" select="$new-y" />
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<xsl:with-param
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<xsl:with-param
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name="y" select="$new-y" />
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<xsl:with-param
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name="angle" select="$angle" />
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<xsl:with-param name="states" select="$states" />
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<xsl:with-param name="states"
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select="$states" />
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</xsl:call-template>
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</xsl:when>
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<!-- Si la commande est un store -->
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<xsl:when test="local-name($current-command) = 'store'">
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<!-- On enregistre le nouvelle état-->
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<xsl:variable name="new-state">
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<xsl:variable name="new-state">
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<state x="{$x}" y="{$y}" angle="{$angle}" />
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</xsl:variable>
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<!-- On l'ajoute au précédent -->
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<xsl:variable
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<xsl:variable
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name="new-states" select="($states, $new-state)" />
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<xsl:call-template
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<xsl:call-template
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name="process-commands">
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<xsl:with-param name="commands" select="$commands[position() > 1]" />
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<xsl:with-param
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<xsl:with-param
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name="commands" select="$commands[position() > 1]" />
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<xsl:with-param
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name="x" select="$x" />
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<xsl:with-param name="y" select="$y" />
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<xsl:with-param
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<xsl:with-param
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name="y" select="$y" />
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<xsl:with-param
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name="angle" select="$angle" />
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<xsl:with-param name="states"
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<xsl:with-param name="states"
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select="$new-states" />
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</xsl:call-template>
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</xsl:when>
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<!-- Si la commande est un restore et que au moins 1 état est enregistré : -->
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<xsl:when test="local-name($current-command) = 'restore' and count($states)>=1">
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<xsl:when test="local-name($current-command) = 'restore' and count($states) >= 1">
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<!-- On séléctionne notre state-->
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<xsl:variable
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<xsl:variable
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name="state" select="$states/state[1]" />
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<xsl:variable
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<xsl:variable
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name="remaining-states"
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select="subsequence($states/state, 1, count($states/state) - 1)" />
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<xsl:call-template
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name="process-commands">
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<xsl:with-param name="commands" select="$commands[position() > 1]" />
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<xsl:with-param
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<xsl:with-param
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name="commands" select="$commands[position() > 1]" />
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<xsl:with-param
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name="x" select="($state/@x)[last()]" />
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<xsl:with-param name="y"
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<xsl:with-param name="y"
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select="($state/@y)[last()]" />
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<xsl:with-param name="angle"
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<xsl:with-param name="angle"
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select="($state/@angle)[last()]" />
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<xsl:with-param name="states"
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<xsl:with-param name="states"
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select="$remaining-states" />
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</xsl:call-template>
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</xsl:when>
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