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📁 mfc资源大全包含MFC编程各个方面的源码
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<HTML><!-- Header information--><HEAD>   <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">   <!-- add your name in the CONTENT field below -->   <META NAME="Author" CONTENT="Ciotescu Raul">   <TITLE><!-- Section Title -->Bitmap & Palette - <!-- Article Title -->DIB classes</TITLE></HEAD><!-- Set background properties --><body background="/fancyhome/back.gif" bgcolor="#FFFFFF"><!-- A word from our sponsors... --><table WIDTH="100%"><tr WIDTH="100%"><td align=center><!--#exec cgi="/cgi/ads.cgi"--><td></tr></table><CENTER><H3><FONT COLOR="#AOAO99"><!-- Article Title -->EBGFX Library </FONT></H3></CENTER><HR><!-- Author and contact details -->This article was contributed by <!-- Author Email --><A HREF="mailto:ef00@luc.ac.be"><!-- Author Name -->El Barto</A>.<!-- Sample image - gif or jpg --><!--P><IMG SRC="******" --><!-- Text / source code --><p><!-- The 'p' starts a paragraph of normal text --> <p>The EBGFX Library is a Free MFC compatible library created to get fastaccess to image data and include several functions not available in thewindows gdi. <br><p>Whether you create a Ray-Tracer, an Image ProcessingLibrary, a Painting Program or Games, you need direct pixel access,you can't just use GetPixel, SetPixelV. One way to achieve this is usingDibs (Device Independant Bitmaps). To get rid of the details of creatingdestroying DibSections I wrote a CDib class. <br>However I want morethan just Creating and Destroying Images, I want to have several layersand techniques to composite those layers into a final Image, so I'veimplemented some of the Compositing techniques found in Photoshop.(As a GFX Artist I'm more acquainted with those techniques as withsrc & dst Blend functions). <p>I also included some routines to Copy/Pasteparts of Images to other Images, with optional Compositing.The current public version of the Library contains two classes :CDib, which can be used as an offscreen surface, a tile, a layer, andwhich includes several Compositing techniques and Drawing Primitives.CDrawDib, which can be used to write a CDib directly into VideoMemory with optional Stretching and/or Dithering the Dib.<p>Two other classes are not yet released : CFilter, which implements a lot ofImage Processing Filters, and CFileHandler which loads several ImageFormats like BMP, JPG, GIF, TGA, TIFF, PCX, PSD, etc.In the future I'll probably create a DirectDaw based version forGames.<p><CENTER><font size = "5">Compositing</font></CENTER><p><p align="center"><img src="ebgfx_Otaku.gif" width="64" height="64"><br>Original</p><div align="center"><center><table border="0">    <tr>        <td align="center">Original</td>        <td align="center">Blend</td>        <td align="center">Darken</td>        <td align="center">Difference</td>        <td align="center">Lighten</td>        <td align="center">Multiply</td>        <td align="center">Screen</td>    </tr>    <tr>        <td><img src="ebgfx_colors.gif" width="64" height="64"><br>        <img src="ebgfx_flare.gif" width="64" height="64"></td>        <td colspan="6"><img src="ebgfx_effects.jpg" width="384"        height="128"></td>    </tr></table></center></div><p align="center">What does each function do ?</p><div align="center"><center><table border="1" cellpadding="2" cellspacing="0"bordercolor="#808080" bordercolordark="#83DC29"bordercolorlight="#C0C0C0">    <tr>        <td>Blend :</td>        <td>Blends the src color with the dst color (alpha from 0        to 255)</td>    </tr>    <tr>        <td>Darken :</td>        <td>dst = Darkest Color ( src, dst )</td>    </tr>    <tr>        <td>Difference :</td>        <td>dst = Abs ( src-dst )</td>    </tr>    <tr>        <td>Lighten :</td>        <td>dst = Lightest Color ( src, dst )</td>    </tr>    <tr>        <td>Multiply :</td>        <td>dst = src*dst</td>    </tr>    <tr>        <td>Screen :</td>        <td>dst = (255-src)*(255-dst)</td>    </tr></table></center></div><p align="center">What can they be used for ?</p><div align="center"><center><table border="1" cellpadding="2" cellspacing="0"bordercolor="#808080" bordercolordark="#83DC29"bordercolorlight="#C0C0C0">    <tr>        <td>Blend :</td>        <td>That nice Glassy effect for windows, water, fading</td>    </tr>    <tr>        <td>Darken :</td>        <td>Shadows</td>    </tr>    <tr>        <td>Difference :</td>        <td>Inverting</td>    </tr>    <tr>        <td>Multiply :</td>        <td>Exclude certain color channels, masking</td>    </tr>    <tr>        <td>Lighten, Screen :</td>        <td>Flares, Fire, Explosions</td>    </tr></table></center></div><p>This is a small example which shows some of the functionalityof the CDib and CDrawDib classes : RotoZoom.zip<p align="center"><img src="ebgfx_rotozoom1.gif" width="112"height="146"> <img src="ebgfx_rotozoom2.gif" width="112" height="146"></p>It's a small RotoZoomer with optional Motion Blur (using the CDib functions)<p>This is a second example testing the new CopyDC/PasteDC functions,It grabs the opposite part of the screen, and puts it behind Glass.There is still a little problem though (see Second Screenshot), how can you grab the screenbefore your window gets painted ? If anyone knows how to fix this,please mail me<p align="center"><img src="ebgfx_xray1.gif" width="208" height="246"></p><p><CENTER><font size = "5">Bugs & Warnings</font></CENTER><p>Send Suggestions, Speed Increases and Bug Reports to <A HREF="mailto:ef00@luc.ac.be">ef00@luc.ac.be</A><table border="0">    <tr>        <td valign="top">Bugs :</td>        <td valign="top"><ul>            <li>No known Bugs at this Time</li>        </ul>        </td>    </tr>    <tr>        <td valign="top">Warnings :</td>        <td valign="top"><ul>            <li>Line drawing has no clipping at the moment, so                keep<br>                the points within the clipping region please.</li>            <li>The Rect functions have clipping capacity, if you                don't<br>                need clipping you can throw the clipping code                away for<br>                extra speed.</li>            <li>Copy means copy from 'this' to first param.</li>            <li>Paste means copy from first param to 'this'.</li>            <li>Only 32-bit Dibs are supported at this time.</li>            <li>The Dibs are upside-down because DrawDibDraw<br>                won't accept them otherwise.</li>            <li>You won't find a SetPixel function because it's                just<br>                stupid to create such a function, use<br>                m_Bits[y*m_Size.cx+x]=Color instead.<br>                Or define a macro :<br>                #define SetPixel(x,y,C) m_Bits[y*m_Size.cx+x]=C</li>        </ul>        </td>    </tr></table><p><CENTER><font size = "5">Future Enhancements</font></CENTER><p><table border="0">    <tr>			<td valign="top"></td>			<td valign="top"><ul>				<li>Speed</li>				<li>More primitives.</li>				<li>Maybe Render-States which determine what function					to<br>					use.</li>				<li>...</li>			</ul>			</td>    </tr></table><!-- start a block of source code --><PRE><TT><FONT COLOR="#990000"><!-- end the block of source code --></FONT></TT></PRE><!-- create more blocks of source code as needed --><!-- demo project --><p><!-- first the filename (zip files) --><A HREF="ebgfx_rotozoom.zip">Download demo project and source code: RotoZoom - 160KB</A><p><!-- first the filename (zip files) --><A HREF="ebgfx_xray.zip">Download demo project XRay.zip - 145KB</A><!-- Posted / Update  date mm/dd/yy - add to the list --><p>Date Posted: 5/08/98<P><HR><!-- Codeguru contact details --><TABLE BORDER=0 WIDTH="100%"><TR><TD WIDTH="33%"><FONT SIZE=-1><A HREF="http://www.codeguru.com">Goto HomePage</A></FONT></TD><TD WIDTH="33%"><CENTER><FONT SIZE=-2>&copy; 1998 Zafir Anjum</FONT>&nbsp;</CENTER></TD><TD WIDTH="34%"><DIV ALIGN=right><FONT SIZE=-1>Contact me: <A HREF="mailto:zafir@home.com">zafir@home.com</A>&nbsp;</FONT></DIV></TD></TR></TABLE><!-- Counter --></BODY></HTML>
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