<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.0//EN" "https://www.web3d.org/specifications/x3d-3.0.dtd">
<X3D profile='Immersive' version='3.0' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-3.0.xsd'>
  <head>
    <meta content='MaterialTogglePrototype.x3d' name='title'/>
    <meta content='Prototype definition for toggle-able Material node that can switch between 2 sets of material values, selectable at run time. This prototype also demonstrates why it is important that only the first node in a ProtoBody can render: so that it can serve as a special node type (such as Material).' name='description'/>
    <meta content='Don Brutzman and MV4205 class' name='creator'/>
    <meta content='29 April 2004' name='created'/>
    <meta content='28 November 2019' name='modified'/>
    <meta content='MaterialToggleExample.x3d' name='reference'/>
    <meta content='https://www.web3d.org/x3d/content/examples/Savage/Tools/Animation/MaterialTogglePrototype.x3d' name='identifier'/>
    <meta content='X3D-Edit 3.2, https://www.web3d.org/x3d/tools/X3D-Edit' name='generator'/>
    <meta content='../../license.html' name='license'/>
  </head>
  <Scene>
    <WorldInfo title='MaterialTogglePrototype.x3d'/>
    <ProtoDeclare appinfo='MaterialToggle selects one of two different Material values' name='MaterialToggle'>
      <ProtoInterface>
        <field accessType='inputOnly' name='set_toggle' type='SFBool'/>
        <field accessType='initializeOnly' appinfo='whether to use DefaultMaterial or ToggleMaterial' name='toggle' type='SFBool' value='false'/>
        <field accessType='outputOnly' name='toggle_changed' type='SFBool'/>
        <field accessType='initializeOnly' appinfo='Material node that is enabled when toggle=false' name='defaultMaterial' type='SFNode'>
          <!-- no default initialization node since it crashes Xj3D -->
        </field>
        <field accessType='initializeOnly' appinfo='Material node that is enabled when toggle=true' name='toggleMaterial' type='SFNode'>
          <!-- no default initialization node since it crashes Xj3D -->
        </field>
        <field accessType='inputOnly' appinfo='provide replacement default Material node' name='set_defaultMaterial' type='SFNode'/>
        <field accessType='inputOnly' appinfo='provide replacement toggle Material node' name='set_toggleMaterial' type='SFNode'/>
      </ProtoInterface>
      <ProtoBody>
        <!-- first node is node type for this prototype, other nodes are active but do not render -->
        <Material DEF='ViewedMaterialNode'/>
        <Script DEF='MaterialAnimationScript' directOutput='true'>
          <field accessType='initializeOnly' name='traceEnabled' type='SFBool' value='false'/>
          <field accessType='inputOnly' name='set_toggle' type='SFBool'/>
          <field accessType='initializeOnly' appinfo='whether to use DefaultMaterial or ToggleMaterial' name='toggle' type='SFBool'/>
          <field accessType='outputOnly' name='toggle_changed' type='SFBool'/>
          <field accessType='initializeOnly' name='defaultMaterial' type='SFNode'/>
          <field accessType='initializeOnly' name='toggleMaterial' type='SFNode'/>
          <field accessType='inputOnly' appinfo='provide replacement Material node' name='set_defaultMaterial' type='SFNode'/>
          <field accessType='inputOnly' appinfo='provide replacement Material node' name='set_toggleMaterial' type='SFNode'/>
          <field accessType='initializeOnly' name='viewedMaterial' type='SFNode'>
            <Material USE='ViewedMaterialNode'/>
          </field>
          <IS>
            <connect nodeField='set_toggle' protoField='set_toggle'/>
            <connect nodeField='toggle' protoField='toggle'/>
            <connect nodeField='toggle_changed' protoField='toggle_changed'/>
            <connect nodeField='defaultMaterial' protoField='defaultMaterial'/>
            <connect nodeField='toggleMaterial' protoField='toggleMaterial'/>
            <connect nodeField='set_defaultMaterial' protoField='set_defaultMaterial'/>
            <connect nodeField='set_toggleMaterial' protoField='set_toggleMaterial'/>
          </IS>
          <![CDATA[
ecmascript:

function initialize ()
{

   tracePrint ('initialize() begin...');
   if (defaultMaterial != null)
   {
	tracePrint ('defaultMaterial.diffuseColor=' + defaultMaterial.diffuseColor.toString());
	viewedMaterial.diffuseColor     = defaultMaterial.diffuseColor;
	viewedMaterial.emissiveColor    = defaultMaterial.emissiveColor;
	viewedMaterial.specularColor    = defaultMaterial.specularColor;
	viewedMaterial.shininess        = defaultMaterial.shininess;
	viewedMaterial.ambientIntensity = defaultMaterial.ambientIntensity;
	viewedMaterial.transparency     = defaultMaterial.transparency;
	tracePrint ('toggleMaterial.diffuseColor=' + toggleMaterial.diffuseColor.toString());
   }
   else alwaysPrint ('warning: no initialization Material node provided for defaultMaterial');
   if  (toggleMaterial == null)
        alwaysPrint ('warning: no initialization Material node provided for toggleMaterial');

   tracePrint ('initialize() complete');
}

function set_toggle (value, timestamp)
{
   if ((value == true) && (toggleMaterial != null))
   {
	tracePrint ('set_toggle true, toggleMaterial.diffuseColor=' + toggleMaterial.diffuseColor.toString());
	viewedMaterial.diffuseColor     = toggleMaterial.diffuseColor;
	viewedMaterial.emissiveColor    = toggleMaterial.emissiveColor;
	viewedMaterial.specularColor    = toggleMaterial.specularColor;
	viewedMaterial.shininess        = toggleMaterial.shininess;
	viewedMaterial.ambientIntensity = toggleMaterial.ambientIntensity;
	viewedMaterial.transparency     = toggleMaterial.transparency;
   }
   else if (defaultMaterial != null)
   {
	tracePrint ('set_toggle false, defaultMaterial.diffuseColor=' + defaultMaterial.diffuseColor.toString());
	viewedMaterial.diffuseColor     = defaultMaterial.diffuseColor;
	viewedMaterial.emissiveColor    = defaultMaterial.emissiveColor;
	viewedMaterial.specularColor    = defaultMaterial.specularColor;
	viewedMaterial.shininess        = defaultMaterial.shininess;
	viewedMaterial.ambientIntensity = defaultMaterial.ambientIntensity;
	viewedMaterial.transparency     = defaultMaterial.transparency;
   }
   toggle         = value; // remember state
   toggle_changed = value; // chain input boolean event to output event
   tracePrint ('set_toggle(' + value + ') complete');
}

function set_defaultMaterial(newMaterial)
{
	defaultMaterial = newMaterial;
	tracePrint('set_defaultMaterial = ' + newMaterial);
}

function set_toggleMaterial(newMaterial)
{
	toggleMaterial = newMaterial;
	tracePrint('set_toggleMaterial = ' + newMaterial);
}

function tracePrint(outputString)
{
	if (traceEnabled) Browser.println ('[MaterialToggle] ' + outputString);
}
function alwaysPrint(outputString)
{
	Browser.println ('[MaterialToggle] ' + outputString);
}
]]>
        </Script>
      </ProtoBody>
    </ProtoDeclare>
    <!-- ==================== -->
    <Anchor description='MaterialToggleExample' parameter='"target=_blank"' url='"MaterialToggleExample.x3d" "https://www.web3d.org/x3d/content/examples/Savage/Tools/Animation/MaterialToggleExample.x3d" "MaterialToggleExample.wrl" "https://www.web3d.org/x3d/content/examples/Savage/Tools/Animation/MaterialToggleExample.wrl"'>
      <Shape>
        <Text string='"MaterialTogglePrototype" "defines a prototype" "" "Click text to see example scene" "MaterialToggleExample"'>
          <FontStyle justify='"MIDDLE" "MIDDLE"' size='0.9'/>
        </Text>
        <Appearance>
          <Material diffuseColor='1 1 0.2'/>
        </Appearance>
      </Shape>
    </Anchor>
  </Scene>
</X3D>