choose pseudo-random image for intro

foss4g-2016/__init__.py

@@ -13,11 +13,17 @@ titlemap = {
 def introFrames(p):
 	move=50
 
+	nr = p['$id'];
+
 	# five initial frames
 	for i in range(0, 5):
 		yield (
 			('text', 'style',    'opacity', "%.4f" % 0),
 			('text', 'attr',     'transform', 'translate(%.4f, 0)' % -move),
+
+			('image%u' % ((nr+0)%3), 'style',    'opacity', "%.4f" % 1),
+			('image%u' % ((nr+1)%3), 'style',    'opacity', "%.4f" % 0),
+			('image%u' % ((nr+2)%3), 'style',    'opacity', "%.4f" % 0),
 		)
 
 	# 3 Sekunde Text Fadein

foss4g-2016/artwork/intro.svg

@@ -115,9 +115,29 @@
        height="1280"
        preserveAspectRatio="none"
        style="image-rendering:optimizeQuality"
-       id="image4277"
+       id="image0"
        x="0"
        y="-27.637316" />
+    <image
+       sodipodi:absref="/home/peter/VOC/intro-outro-generator/foss4g-2016/artwork/Panorama-v-Stadthaus-2013-02.jpg"
+       xlink:href="Panorama-v-Stadthaus-2013-02.jpg"
+       width="2220.386"
+       height="1110.0364"
+       preserveAspectRatio="none"
+       style="opacity:0;image-rendering:optimizeQuality"
+       id="image1"
+       x="-191.62154"
+       y="-33.373199" />
+    <image
+       sodipodi:absref="/home/peter/VOC/intro-outro-generator/foss4g-2016/artwork/ship.jpg"
+       xlink:href="ship.jpg"
+       width="1985.7144"
+       height="1116.9644"
+       preserveAspectRatio="none"
+       style="opacity:0;image-rendering:optimizeQuality"
+       id="image2"
+       x="-14.285739"
+       y="-39.066048" />
   </g>
   <g
      inkscape:groupmode="layer"