csharp
/
XNAGameStudio
зеркало из https://github.com/SimonDarksideJ/XNAGameStudio.git


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860
							<html xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:xanx="http://schemas.microsoft.com/developer/xanx/2005"><head><META http-equiv="Content-Type" content="text/html; charset=utf-8"><META NAME="save" CONTENT="history"><title>RimLighting Sample for Windows Phone 7</title>
<style><!--
/***********************************************************
 *             SCRIPT-SUPPORTING STYLES
 ***********************************************************/

/* Defines the userData cache persistence mechanism. */
.userDataStyle
{
	behavior: url(#default#userData);
}

/* Used to save the scroll bar position when navigating away from a page. */
div.saveHistory
{
	behavior: url(#default#saveHistory);
}

/* Formats the expand/collapse images for all collapsible regions. */
img.toggle
{
	border: 0;
	margin-right: 5;
}

/* Formats the Language filter drop-down image. */
img#languageFilterImage
{
	border: 0;
	margin-left: 0;
	vertical-align: middle;
}

/* Formats the Members Options filter drop-down image. */
img#membersOptionsFilterImage
{
	border: 0;
	margin-left: 0;
	vertical-align: middle;
}

/* Formats the Collapse All/Expand All images. */
img#toggleAllImage
{
	margin-left: 0;
	vertical-align: middle;
}

/* Supports XLinks */
MSHelp\:link
{
 	text-decoration: underline;
	color: #0000ff; 
	hoverColor: #3366ff;
	filterString: ;
}

body
	{
	background:	#FFFFFF;
	color: #000000;
	font-family:	Verdana;
	font-size: medium;
	font-style: normal;
	font-weight: normal;
	margin-top:	0;
	margin-bottom:	0;
	margin-left:	0;
	margin-right:	0;
	width:	100%;
	/*font-size: 110%;*/
	}

div.section
	{
	margin-left: 15px;
	}

div.hxnx5
	{
	margin-left: 1.5em;
	}

/* Font for all headings */	
h1, h2, h3, h4, h5, h6
	{
	font-family: Verdana, Arial, Helvetica, sans-serif;
	margin-top: 18;
	margin-bottom: 8; 
	font-weight: bold;
	}
h1
	{
	font-size: 130%;
	color: #003399;
	}
div#scrollyes h1 /* Changes font size for full-scrolling topic */
	{
	font-size: 150%;
	}
h2
	{
	font-size: 122%;
	}
h3
	{
	font-size: 115%;
	margin-top: 9;
	margin-bottom: 4; 
	}
h4
	{
	font-size: 115%;
	margin-top: 9;
	margin-bottom: 4; 
	}
h5
	{
	font-size: 100%;
	margin-top: 9;
	margin-bottom: 4; 
	}
h6
	{
	font-size: 100%;
	margin-top: 9;
	margin-bottom: 4; 
	}

ul p, ol p, dl p
	{
	margin-left: 0em;
	}

p
	{
	margin-top: .6em;
	margin-bottom: .6em;
	}
	
td p
	{
	margin-top: 0.0em;
	margin-bottom: 0.6em;
	}

dd p
	{
	margin-top: 0.0em;
	margin-bottom: 0.6em;
	}

.image
	{
	text-align: center;
	}

dl
	{
	margin-top: 0em; 
	margin-bottom: 1.3em;
	}

dd
	{
	margin-bottom: 0em;
	margin-left: 1.5em;
	}

dl.glossary dd 
{
	margin-bottom: 0em;  
	margin-left: 1.5em; 
}

dt
	{
	margin-top: .6em;
	margin-bottom: 1;
	}

ul, ol
	{
	margin-top: 0.6em;
	margin-bottom: 0.6em; 	
	}
	
ol
	{
	margin-left: 2.5em; 	
	}	
	
ul
	{
	list-style-type: disc; 
	margin-left: 1.9em; 
	}

li
	{
	margin-bottom: 0.4em;
	}

ul ol, ol ol
	{
	list-style-type: lower-alpha;
	}

pre
	{
	margin-top: .6em;
	margin-bottom: .6em; 
	font: 105% Lucida, mono; 
	color: #000066;
	}

code
{
	font-family: Monospace, Courier New, Courier;
	font-size: 105%;
	color:	#000066;
}

table.userdata td 
	{
	background: #ffffff;
	background-color: #F5F5F5;
	border-color: #ffffff;
	border: none;
	}	
table.clsWarning
	{
	background: #ffffff;
	padding: 0px;
	margin: 0px;
	border: none;
	}
table.clsWarning td
	{
	padding: 0px;
	margin: 0px;
	background: #ffffff;
	vertical-align: middle;
	font-size: 70%;
	}

div#mainSection table
	{
	width: 95%;
	background: #ffffff;
	margin-top: 5px;
	margin-bottom: 5px;
	}

div#mainSection table th
	{ 
	padding: 5px 6px;
	background: #EFEFF7;
	text-align: left;
	font-size: 70%;
	vertical-align: bottom;
	border-bottom: 1px solid #C8CDDE;
	}
div#mainSection table td
	{ 
	padding: 5px 5px;
	background: #F7F7FF;
	vertical-align: top;
	font-size: 70%;
	border-bottom: 1px solid #D5D5D3;
	}

div#syntaxCodeBlocks table th
	{
	padding: 1px 6px;
	color: #000066;
	}

div#syntaxCodeBlocks table td
	{
	padding: 1px 5px;
	}

/* Applies to the running header text in the first row of the upper table in the
   non-scrolling header region. */
span#runningHeaderText
{
	color: #003399;
	font-size: 90%;
	padding-left: 13;
}

/* Applies to the topic title in the second row of the upper table in the
   non-scrolling header region. */
span#nsrTitle
{
	color: #003399;
	font-size: 120%;
	font-weight: 600;
	padding-left: 13;
}

/* Applies to everything below the non-scrolling header region. */
div#mainSection
{
	font-size: 70%;
	width: 100%;
}

/* Applies to everything below the non-scrolling header region, minus the footer. */
div#mainBody
{
	font-size: 90%;
	margin-left: 15;
	margin-top: 10;
	padding-bottom: 20;
}

/* Adds right padding for all blocks in mainBody */
div#mainBody p, div#mainBody ol, div#mainBody ul, div#mainBody dl
{
	padding-right: 5;
}

div#mainBody div.alert, div#mainBody div.code, div#mainBody div.tableSection
{
	width:98.9%;
}

div.alert p, div.code p
{
	margin-top:5;
	margin-bottom:8;
}

/*- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Begin Note Styles - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
div#mainSection div.alert table
{
	border: 0;
}

div#mainSection div.alert table th
{
	padding-top: 0;
	padding-bottom: 0;
	padding-left: 5;
	padding-right: 5;
}

div#mainSection div.alert table td
{
	padding-left: 5;
	padding-right: 5;
}

img.note
{
	border: 0;
	margin-left: 0;
	margin-right: 3;
}
/*- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - End Note Styles - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/

/*- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Begin Non-scrolling Header Region Styles - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
/* Applies to the entire non-scrolling header region. */
div#header
{
	background-color: #D4DFFF;
	padding-top:	0;
	padding-bottom:	0;
	padding-left:	0;
	padding-right:	0;
	width:	100%;
}

/* Applies to both tables in the non-scrolling header region. */
div#header table
{
	margin-top:	0;
	margin-bottom: 0;
	border-bottom-color: #C8CDDE;
	border-bottom-style: solid;
	border-bottom-width: 1;
	background: #D4DFFF;
	width:	100%;
}

/* Applies to cells in both tables in the non-scrolling header region. */
div#header table td
{
	color: #0000FF;
	font-size: 70%;
	padding-right: 20;
	padding-top: 1;
	padding-bottom: 1;
	border: none;
	background: #D4DFFF;
}

/* Applies to the last row in the upper table of the non-scrolling header region. Text 
   in this row includes See Also, Constructors, Methods, and Properties. */
div#header table tr#headerTableRow3 td
{
	padding-bottom: 2;
	padding-top: 5;
	padding-left: 15;
}

/* Applies to the lower table in the non-scrolling header region. Text in this table
   includes Collapse All/Expand All, Language Filter, and Members Options. */
div#header table#bottomTable
{
	border-top-color: #FFFFFF;
	border-top-style: solid;
	border-top-width: 1;
	text-align: left;
	padding-left: 15;
}


blockquote
	{
	margin-left: 3.8em;
	margin-right: 3.8em;
	margin-top: .6em;
	margin-bottom: .6em;
	}

sup
	{
	text-decoration: none;
	font-size: smaller; 
	}

a:link
	{
	color: #0000FF;
/*    font-weight: bold */
	}
	
a:visited
	{
	color: #0000AA;
/*    font-weight: bold	*/
	}
	
a:hover
	{
	color: #3366FF;
/*    font-weight: bold */
	}
	
.label
	{
	font-weight: bold; 
	margin-top: 1em;
	margin-left: -26px;
	}
	
.tl
	{
	margin-bottom: .75em; 
	}
	
.atl
	{
	padding-left: 1.5em;
	padding-bottom: .75em; 
	}
	
.cfe
	{
	font-weight: bold; 
	}
	
.mini
	{
	font-size: smaller;
	}
	
.dt
	{
	margin-bottom: -.6em; 
	}
	
.indent
	{
	margin-left: 1.9em; 
	margin-right: 1.9em;
	}

.product
	{
	text-align: right;
	color: #333333;
	font-size: smaller;
	font-style: italic;
	}

.buttonbarshade
	{
	position: relative;
	margin: 0;
	left: 0px;
	top: 2;
	width: 50%;
	height: 40px;
	}

.buttonbartable
	{
	position: absolute;
	margin: 0;
	padding:0;
	border:0;
	left:0px;
	top: 2;
	width: 100%;
	height: 40px;
	}

/* background color, font for header */ 
table.buttonbartable td, table.buttonbarshade td
	{
	background: #ffffff; /*#5177B8; #80C615;*/
	border-left: 0px solid #80C615;
	margin: 0;
	padding: 0px 0px 0px 0px;
	font-family: Impact, sans-serif;
	font-size: 14pt;
	}

table.buttonbartable td.button1
	{
	background: #5177B8; /*#80C615;*/;
	padding: 0;
	font-weight: bold;
	text-align: center;
	cursor: hand;
	}

table.buttonbartable td.button2
	{
	background: #5177B8; /*#80C615;*/;
	font-weight: bold;
	text-align: center;
	}

table.buttonbartable td.button3
	{
	background: #5177B8; /*#80C615;*/;
	font-weight: bold;
	text-align: center;
	}

table.buttonbartable td.runninghead
	{
	padding-left: 0px;
	font-style: italic;
	text-align: left;
	}

.version
	{
	text-align: left;
	color: #000000;
	margin-top: 3em;
	margin-left: -26px;
	font-size: smaller;
	font-style: italic;
	}

.lang, .ilang
	{
	color: #0000ff;
	font: normal 7pt Arial, Helvetica, sans-serif;
	}

div.langMenu
	{
	position: absolute;
	z-index: 1;
	width: 96pt;
	padding: 8pt;
	visibility: hidden;
	border: 1px solid #000000;
	background: #ffffd0;
	}

div.langMenu ul
	{
	padding-left: 2em;
	margin-left: 0;
	}

div.filtered
	{
	margin: 4pt 0 8pt -26px;
	padding: 4px 4px 8px 26px;
	width: 100%;
	border: 2px solid #aaaacc;
	background: #ffffff;
	}

div.filtered2
	{
	margin: 4pt 0 8pt -26px;
	padding: 4px 4px 8px 26px;
	width: 100%;
	border: none;
	background: #ffffff;
	}

div.filtered h1, div.filtered h2, div.filtered h3, div.filtered h4
	{
	margin-left: -22px;
	}

div.filtered span.lang
	{
	position: relative;
	left: -22px;
	}

div.reftip
	{
	position: absolute;
	z-index: 1;
	padding: 8pt;
	visibility: hidden;
	border: 1px solid #000000;
	background: #ffffd0;
	}

a.synParam
	{
	color: #0000FF;
	/*color: #3F7800;*/ 	
	/*color: #8DC54F;*/
	text-decoration: none;
    font-weight: normal;
	}

a.synParam:hover
	{
	text-decoration: underline;
    font-weight: normal;
	}

div.sapop
	{
	position: absolute;
	z-index: 1;
	left: 26px;
	width: 100%;
	padding: 10px 10px 10px 36px;
	visibility: hidden;
	border: 1px solid #000000;
	background: #ffffd0;
	}

div.footer
	{
	width: 100%;
	border: none;
	background: #ffffff;
	margin-top: 18pt;
	padding-bottom: 12pt;
	color: #0000FF;
	/*color: #228B22; */
	text-align: center;
	font-size: 76%;
	}

div.preliminary
	{
	margin-top: 8pt;
	padding-bottom: 12pt;
	color: #A0A0A0;
	}

/* A procedure section. eg. 'To create a file', 'To add a value' */
div.proc
    {
	margin-left: 0.5em; 
    }
     
/* The title of a 'procedure' section. */
div.proc h3
    {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-weight: bold;
	font-size: 115%;
	margin-top: 1em;
	margin-bottom: 0.4em;
	margin-left: -0.5em; 
	color: #003399;
    }

div.proc ul
    {
    margin-left: 1.5em;
    }

div.proc ol
    {
    margin-left: 2.0em;
    }
      
.note
	{
	margin-left: 14pt;
	margin-right: 12pt;
	}

.indent1
	{
	margin-left: 12pt;
	}

.indent2
	{
	margin-left: 24pt;
	}

.indent3
	{
	margin-left: 36pt;
	}

p.proch
	{
	padding-left: 16px;
	}

p.proch img
	{
	position: relative; 
	vertical-align: top;
	left: -18px; 
	margin-right: -14px; 
	margin-bottom: -18px;
	}
	
div.clsPlatSpec
{
	background-color:#FFF8DC;
	border-style:solid;
	border-width:1pt 0pt 0pt 1pt;
	border-color:#ffE4C4;
	margin-top:0.6em;
	width:100%;
}


/* Applies to the language labels in the Language Filter drop-down list. */
.languageFilter
{
	color:	#0000FF;
	cursor:hand;
	text-decoration:underline;
	padding-bottom:4;
}

/* Dropdown areas */

#languageSpan {
	position: absolute;
	visibility: hidden;
	border-style: solid;
	border-width: 1px;
	border-color: #C8CDDE;
	background: #d4dfff;
	padding: 4px;
	font-size: 70%;
}

#membersOptionsSpan {
	position: absolute;
	visibility: hidden;
	border-style: solid;
	border-width: 1px;
	border-color: #C8CDDE;
	background: #d4dfff;
	padding: 4px;
	font-size: 70%;
}
--></style>

<xml>
<MSHelp:TOCTitle Title="RimLighting Sample for Windows Phone 7" />
<MSHelp:RLTitle Title="RimLighting Sample for Windows Phone 7" />
<MSHelp:Keyword Index="A" Term="O:Microsoft.Xna.RimLighting" />
<MSHelp:Keyword Index="A" Term="6a972370-187d-eb26-5ba2-bcffa58d3c94" />
<MSHelp:Keyword Index="K" Term="RimLighting Sample for Windows Phone 7" />

<MSHelp:Attr Name="AssetID" Value="6a972370-187d-eb26-5ba2-bcffa58d3c94" />
<MSHelp:Attr Name="Locale" Value="en-us" />
<MSHelp:Attr Name="CommunityContent" Value="1" />
<MSHelp:Attr Name="TopicType" Value="kbOrient" />
<MSHelp:Attr Name="DocSet" Value="XNA" />
<MSHelp:Attr Name="DocSet" Value="ExpressLibVS" />
<MSHelp:Attr Name="DocSet" Value="C#" />
<MSHelp:Attr Name="ProjType" Value="LocalProj" />
<MSHelp:Attr Name="Technology" Value="XNA" />
<MSHelp:Attr Name="Product" Value="XNA" />
<MSHelp:Attr Name="Project" Value="XNA Platform Xbox 360" />
<MSHelp:Attr Name="Project" Value="XNA Platform Windows" />
<MSHelp:Attr Name="Project" Value="XNA Platform Windows Phone" />
<MSHelp:Attr Name="Project" Value="XNA Content Project" />
<MSHelp:Attr Name="ProjType" Value="XNA_40" />
<MSHelp:Attr Name="productversion" Value="40" />
</xml>
</head><body><div id="mainSection"><div id="mainBody">
  <h1>RimLighting Sample for Windows Phone 7</h1>

  This sample demonstrates how to implement a rim lighting effect on Windows Phone 7. 

  <a name="ID4EK"></a><h1 class="heading">Sample Overview</h1><div id="ID4EK" class="hxnx1">
    
    <p>Rim lighting is a common technique used in photography and computer graphics. The technique puts a light source on the opposite side of the object and away from the camera. This positioning is used to highlight the silhouette of the object and to better separate it from the background.</p>
    <p>The sample also provides a simple <b>arcball</b> class and a <b>ModelViewerCamera</b> class. The <b>arcball</b> class handles rotations used internally in <b>ModelViewerCamera</b> class. <b>ModelViewerCamera</b> actually uses two arcballs: one for rotating the object in the World, and one for rotating the camera around the object. When the camera is rotated around the object, its position changes, but the camera is always looking at the object.  This is similar to a satellite circling earth whose antenna always faces the earth.</p>
  </div>
  <a name="ID4E5"></a><h1 class="heading">Playing with the Sample</h1><div id="ID4E5" class="hxnx1">
      
      <p>Once the sample starts you can drag on the screen to rotate the object. On the bottom of the screen there is a button to toggle between world rotation mode and camera rotation mode.</p>
    <ul>
      <li>In world rotation mode, only the object is rotated in world space. The position and direction of the light (meaning the normal light, not rim light, in the scene) and camera in world space remains the same.
        <ul>
          <li>Because the light does not rotate with the object, the portion of the object located in *certain area of the screen* is always brighter.</li>
        </ul>
      </li>
      <li>In camera rotation mode, only the position of the camera is rotated in world space.  The position of light and object in world space remain unchanged. 
        <ul>
          <li>Because the light does rotate with the object with respect to the camera, we can see that *certain area of the object* is always brighter.</li>
        </ul>
      </li>
    </ul>
    <p>In either mode, the silhouette of the object is always correctly lit by the rim light.</p>
    <p>The two sliders on the screen can be used to tweak the look of the rim light effect. The <i>amount slider</i> controls the weight of the effect, and the <i>thickness slider</i> controls the thickness of the effect.</p>
  </div>
  <a name="ID4EBC"></a><h1 class="heading">How the Sample Works</h1><div id="ID4EBC" class="hxnx1">
    
    <p>On an Xbox 360 console or a PC, a rim lighting effect usually is implemented by using programmable shaders. On Windows Phone 7, however, there is only five fixed, but configurable, effects. Fortunately, with some mathematical tricks, the Environment Map Effect is close enough to mimic a rim lighting effect.</p>
    <p>The key problem is that environment lighting is computed in world space, and rim lighting is computed in view space. The solution should be to fake all the matrices so that world space is replaced by view space, but screen space stays the same. This could be done by assigning:</p>
    <div class="indent" style="margin-left: 2.5em">
        <p>matModelToWorld &lt;— set to matModelToView</p>
        <p>matWorldToView &lt;— set to matIdentity</p>
        <p>matViewToScreen &lt;— set to matViewtoScreen</p>
    </div>
    <p>These assignments will cause the environment map lookup to use a view space vector, while leaving the overall position transform the same. Next, the cube map should be created so that all faces, except the back face, are dark.  A bright color should be used on the back face.</p>
    <p>If the scene has other lights, these lights also have to be transformed to view space. Such a transformation could be done by:</p>
    <div class="indent" style="margin-left: 2.5em">
        <p>vLightPositionWorld &lt;— set to vLightPositionView</p>
        <p>vLightDirectionWorld &lt;— set to vLightDirectionView</p>
    </div>
    <p>Finally, if there is an object where the rim lighting effect is to be applied only to certain parts, we could separate the object into different submeshes, and then render each independently. In this sample, the bottom of the neck is open, so it does not receive rim lighting.</p>
  </div>

</div><div class="footer" id="footer"><p>© 2010 Microsoft Corporation. All rights reserved.<br>Send feedback to <a href="mailto:[email protected]?subject=Documentation Feedback: RimLighting Sample for Windows Phone 7">[email protected]</a>.</p></div></div></body></html>