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	<title>PIPRIME.FR &#187; Opacity</title>
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		<title>Asymptote and opacity &#8211; fig0190</title>
		<link>http://www.piprime.fr/806/asymptote-and-opacity-fig0190/</link>
		<comments>http://www.piprime.fr/806/asymptote-and-opacity-fig0190/#comments</comments>
		<pubDate>Mon, 29 Oct 2007 08:54:36 +0000</pubDate>
		<dc:creator>Ph. Ivaldi</dc:creator>
				<category><![CDATA[Asymptote]]></category>
		<category><![CDATA[Examples 2D]]></category>
		<category><![CDATA[Opacity]]></category>
		<category><![CDATA[Fill/Unfill]]></category>
		<category><![CDATA[opacity]]></category>
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		<description><![CDATA[You may view all the posts of the category "Opacity" (Compiled with Asymptote version 1.87svn-r4652) size(10cm,0); transform T=rotate(10)*xscale(1.1); path c1=T*unitcircle, c2=T*scale(5)*unitcircle; real l1=length(c1), l2=length(c2); fill(scale(8)*shift(-0.5,-0.5)*unitsquare,blue); int n=500; real step=1/n; for (int i=0; i &#60; n; ++i) { real t=i*step; path g1=subpath(c1,t*l1,(t+step)*l1); path g2=subpath(c2,t*l2,(t+step)*l2); pair A=(relpoint(c1,t)+relpoint(c2,t))/2; pair B=(relpoint(c1,t+step)+relpoint(c2,t+step))/2; path sector=g1--reverse(g2)--cycle; pen trans=opacity(((2-(2*i/n)^1.5))/2); axialshade(sector,trans+i/n*white,A,trans+(i+1)/n*white,B); } shipout(bbox(lightblue+white,Fill),format="pdf"); $(document).ready(function(){$("a#figae05abac3b3c8fe4706784de649b04be").fancybox();});]]></description>
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		<title>Asymptote and opacity &#8211; fig0180</title>
		<link>http://www.piprime.fr/805/asymptote-and-opacity-fig0180/</link>
		<comments>http://www.piprime.fr/805/asymptote-and-opacity-fig0180/#comments</comments>
		<pubDate>Mon, 29 Oct 2007 07:54:36 +0000</pubDate>
		<dc:creator>Ph. Ivaldi</dc:creator>
				<category><![CDATA[Asymptote]]></category>
		<category><![CDATA[Examples 2D]]></category>
		<category><![CDATA[Opacity]]></category>
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		<description><![CDATA[You may view all the posts of the category "Opacity" (Compiled with Asymptote version 1.87svn-r4652) size(4cm,0); dotfactor*=5; dot(scale(2)*"A",(0.5,1),5N); layer(); dot(scale(2)*"B",(1.5,1),5N); filldraw(scale(2)*unitsquare, lightgray+opacity(.5)); shipout(bbox(5mm,black,RadialShade(lightblue,darkblue)), "pdf");]]></description>
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		<title>Asymptote and opacity &#8211; fig0170</title>
		<link>http://www.piprime.fr/804/asymptote-and-opacity-fig0170/</link>
		<comments>http://www.piprime.fr/804/asymptote-and-opacity-fig0170/#comments</comments>
		<pubDate>Mon, 29 Oct 2007 06:54:36 +0000</pubDate>
		<dc:creator>Ph. Ivaldi</dc:creator>
				<category><![CDATA[Asymptote]]></category>
		<category><![CDATA[Examples 2D]]></category>
		<category><![CDATA[Opacity]]></category>
		<category><![CDATA[opacity]]></category>

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		<description><![CDATA[You may view all the posts of the category "Opacity" (Compiled with Asymptote version 1.87svn-r4652) import edvenn_pi; // Luminosity: Creates a color with the luminance of the source color and the hue // and saturation of the backdrop color. This produces an inverse // effect to that of the Color mode. string blend="Luminosity"; size(10cm,0); path [...]]]></description>
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		<title>Asymptote and opacity &#8211; fig0160</title>
		<link>http://www.piprime.fr/803/asymptote-and-opacity-fig0160/</link>
		<comments>http://www.piprime.fr/803/asymptote-and-opacity-fig0160/#comments</comments>
		<pubDate>Mon, 29 Oct 2007 05:54:36 +0000</pubDate>
		<dc:creator>Ph. Ivaldi</dc:creator>
				<category><![CDATA[Asymptote]]></category>
		<category><![CDATA[Examples 2D]]></category>
		<category><![CDATA[Opacity]]></category>
		<category><![CDATA[opacity]]></category>

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		<description><![CDATA[You may view all the posts of the category "Opacity" (Compiled with Asymptote version 1.87svn-r4652) import edvenn_pi; // Color: Creates a color with the hue and saturation of the source color and // the luminance of the backdrop color. This preserves the gray levels // of the backdrop and is useful for coloring monochrome images [...]]]></description>
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		<title>Asymptote and opacity &#8211; fig0150</title>
		<link>http://www.piprime.fr/802/asymptote-and-opacity-fig0150/</link>
		<comments>http://www.piprime.fr/802/asymptote-and-opacity-fig0150/#comments</comments>
		<pubDate>Mon, 29 Oct 2007 04:54:36 +0000</pubDate>
		<dc:creator>Ph. Ivaldi</dc:creator>
				<category><![CDATA[Asymptote]]></category>
		<category><![CDATA[Examples 2D]]></category>
		<category><![CDATA[Opacity]]></category>
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		<description><![CDATA[You may view all the posts of the category "Opacity" (Compiled with Asymptote version 1.87svn-r4652) import edvenn_pi; // Saturation: Creates a color with the saturation of the source color and the hue // and luminance of the backdrop color. Painting with this mode in an // area of the backdrop that is a pure gray [...]]]></description>
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		<title>Asymptote and opacity &#8211; fig0140</title>
		<link>http://www.piprime.fr/801/asymptote-and-opacity-fig0140/</link>
		<comments>http://www.piprime.fr/801/asymptote-and-opacity-fig0140/#comments</comments>
		<pubDate>Mon, 29 Oct 2007 03:54:36 +0000</pubDate>
		<dc:creator>Ph. Ivaldi</dc:creator>
				<category><![CDATA[Asymptote]]></category>
		<category><![CDATA[Examples 2D]]></category>
		<category><![CDATA[Opacity]]></category>
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		<description><![CDATA[You may view all the posts of the category "Opacity" (Compiled with Asymptote version 1.87svn-r4652) import edvenn_pi; // Hue: Creates a color with the hue of the source color and the saturation // and luminance of the backdrop color. string blend="Hue"; size(10cm,0); path [] edvenn= EdVenn(4); pen [] fillp= new pen[]{black, red, green, blue}; pen [...]]]></description>
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		<title>Asymptote and opacity &#8211; fig0130</title>
		<link>http://www.piprime.fr/800/asymptote-and-opacity-fig0130/</link>
		<comments>http://www.piprime.fr/800/asymptote-and-opacity-fig0130/#comments</comments>
		<pubDate>Mon, 29 Oct 2007 02:54:36 +0000</pubDate>
		<dc:creator>Ph. Ivaldi</dc:creator>
				<category><![CDATA[Asymptote]]></category>
		<category><![CDATA[Examples 2D]]></category>
		<category><![CDATA[Opacity]]></category>
		<category><![CDATA[opacity]]></category>

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		<description><![CDATA[You may view all the posts of the category "Opacity" (Compiled with Asymptote version 1.87svn-r4652) import edvenn_pi; // Exclusion: Produces an effect similar to that of the Difference mode but lower // in contrast. Painting with white inverts the backdrop color; painting // with black produces no change. string blend="Exclusion"; size(10cm,0); path [] edvenn= EdVenn(4); [...]]]></description>
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		<title>Asymptote and opacity &#8211; fig0120</title>
		<link>http://www.piprime.fr/799/asymptote-and-opacity-fig0120/</link>
		<comments>http://www.piprime.fr/799/asymptote-and-opacity-fig0120/#comments</comments>
		<pubDate>Mon, 29 Oct 2007 01:54:35 +0000</pubDate>
		<dc:creator>Ph. Ivaldi</dc:creator>
				<category><![CDATA[Asymptote]]></category>
		<category><![CDATA[Examples 2D]]></category>
		<category><![CDATA[Opacity]]></category>
		<category><![CDATA[opacity]]></category>

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		<description><![CDATA[You may view all the posts of the category "Opacity" (Compiled with Asymptote version 1.87svn-r4652) import edvenn_pi; // Difference: Subtracts the darker of the two constituent colors from the lighter // color: // Painting with white inverts the backdrop color; painting with black // produces no change. string blend="Difference"; size(10cm,0); path [] edvenn= EdVenn(4); pen [...]]]></description>
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		<title>Asymptote and opacity &#8211; fig0110</title>
		<link>http://www.piprime.fr/798/asymptote-and-opacity-fig0110/</link>
		<comments>http://www.piprime.fr/798/asymptote-and-opacity-fig0110/#comments</comments>
		<pubDate>Mon, 29 Oct 2007 00:54:35 +0000</pubDate>
		<dc:creator>Ph. Ivaldi</dc:creator>
				<category><![CDATA[Asymptote]]></category>
		<category><![CDATA[Examples 2D]]></category>
		<category><![CDATA[Opacity]]></category>
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		<description><![CDATA[You may view all the posts of the category "Opacity" (Compiled with Asymptote version 1.87svn-r4652) import edvenn_pi; // SoftLight: Darkens or lightens the colors, depending on the source color value. // If the source color is lighter than 0.5, the backdrop is lightened as if // it were dodged; this is useful for adding highlights [...]]]></description>
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		<title>Asymptote and opacity &#8211; fig0100</title>
		<link>http://www.piprime.fr/797/asymptote-and-opacity-fig0100/</link>
		<comments>http://www.piprime.fr/797/asymptote-and-opacity-fig0100/#comments</comments>
		<pubDate>Sun, 28 Oct 2007 23:54:35 +0000</pubDate>
		<dc:creator>Ph. Ivaldi</dc:creator>
				<category><![CDATA[Asymptote]]></category>
		<category><![CDATA[Examples 2D]]></category>
		<category><![CDATA[Opacity]]></category>
		<category><![CDATA[opacity]]></category>

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		<description><![CDATA[You may view all the posts of the category "Opacity" (Compiled with Asymptote version 1.87svn-r4652) import edvenn_pi; // HardLight: Multiplies or screens the colors, depending on the source color // value. If the source color is lighter than 0.5, the backdrop is lightened // as if it were screened; this is useful for adding highlights [...]]]></description>
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