2009/11/6 Artem Pavlenko <[email protected]>: > Excellent visualisation of alien craft landing! Seriously, great to see how > label collision work through different zoom levels, very cool. > > 2009/11/6 Philip Stubbs <[email protected]> >> >> I have been having some fun with doing an animation. >> http://www.youtube.com/watch?v=mxcTimoiX30 >> >> I am having trouble getting my head round a decent algorithm to >> provide a sooth zoom or pan type action. Unfortunately my programming >> skills are limited, and find it easier to build on other examples than >> start from scratch. Does anybody know of any animation scripts that >> work well with Mapnik? >> > Not sure. If you find some please let us know! > Cheers > Artem
Well I did not find any either. Not that I looked very hard. I have however had another stab on my own, and think this is much closer to what I was expecting to see. http://www.youtube.com/watch?v=-bc50sC8adM For any that are interested, here is the script that I used. #!/usr/bin/python from mapnik import * import math, sys, os if __name__ == "__main__": try: mapfile = os.environ['MAPNIK_MAP_FILE'] except KeyError: mapfile = "osm.xml" map_uri = "image.png" #--------------------------------------------------- # Change this to the bounding box you want # ll_start = (-6.5, 49.5, 2.1, 59) ll_finish = (-1.227, 50.812, -1.222, 50.815) ll = [-180.0, -90.0, 180.0, 90.0] #--------------------------------------------------- NumFrames = 600 z = 15 f = 1.0 imgx = 1280 imgy = 720 m = Map(imgx,imgy) load_map(m,mapfile) prj = Projection("+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null +no_defs +over") for i in range(1,NumFrames+1): for j in range(0,4): if i == 1: ll[j] = ll_start[j] else: ll[j] = ll_finish[j]+((ll[j]-ll_finish[j])*f) if f > 0.98: f = f - 0.0001 c0 = prj.forward(Coord(ll[0],ll[1])) c1 = prj.forward(Coord(ll[2],ll[3])) bbox = Envelope(c0.x,c0.y,c1.x,c1.y) m.zoom_to_box(bbox) print "About to render frame %d at %0.3f, %0.3f, %0.3f, %0.3f" % (i, ll[0], ll[1], ll[2], ll[3]) map_uri = "frames2/image%03d.png" % (i) render_to_file(m, map_uri, 'png') -- Philip Stubbs _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
