Re: [mapserver-users] Rendering Challenges
Brent, those are interesting questions On Mon, May 9, 2011 at 21:51, Brent Fraser bfra...@geoanalytic.com wrote: While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) Along with Steve's buffer proposition, you can already more or less do that with OFFSET , except you don't have the notion of inside/outside, but left/right. If all your polygons are digitized in the same direction (i.e. clockwise or anticlockwise) this can be done with: STYLE #FILL END STYLE OUTLINECOLOR r g b OFFSET 1.5 -99 WIDTH 3 OPACITY 50 END 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) not possible in a single step, but by using the polygon layer a second time in a TYPE LINE layer for labelling should get you close. 3. Rotate anno if required to fit inside a polygon would be a nice addition, ANGLE AUTO for polygon labels. We should probably give some way to define if the label should always follow the longest polygon diagonal, or if it should be first placed horizontally and fall back to automatic angling only if the horizontal one does not fit. 4. Place polygon annotation outside polygon if anno doesn't fit inside The fine tuning on how to place the label text compared to the feature would require new mapfile keywords, but that would seem possible to implement. I'm not sure these kind of automatic adjustments would really enhance the rendered quality though. 5. Place line anno above (or below) when using ANGLE FOLLOW This is something I would like to add to. There's a paper detailing the underlying algorithm here: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.24.6970 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) how is this different than what we already have with a negative GAP? On a side note, vector symbols are currently rather ill-defined in mapserver and would need to be tightened up before being able to use them for precise symbol placement like here. 7. User specified character spacing SIZE AUTO for labels in polygon layers would be a nice addition. We'd have to be able to define how the size of the font varies in accordance with the spacing that is applied between characters. Before going down that road, we shall have to implement the refactoring proposed in http://trac.osgeo.org/mapserver/ticket/3611 so as not to clutter the glyph rendering functions of each renderer. 8. Erase lines (but not other objects) under annotation This seems rather involved. It would be difficult to keep the ordering of layers, as the modified feature could only be drawn during the labelcache phase, i.e. after all other features in the map. My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. So, most of these enhancements seem possible, some were already on my laundry-list of rendering enhancements I'd like to tackle. Creating enhancement tickets for those features is a first step, and funding them is the second ;) regards, thomas -- Best Regards, Brent Fraser ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rendering Challenges
Using STYLE GEOMTRANSFORM difference([shape],buffer([shape], -5)) COLOR255 211 127 END results in the entire original polygon being filled. Using GEOMTRANSFORM (difference([shape],buffer([shape], -5))) results in no fill. Best Regards, Brent Fraser On 5/9/2011 4:20 PM, Lime, Steve D (DNR) wrote: That's were a difference operator might come in handy since you're looking for more of a fill-type effect: GEOMTRANSFORM (difference([shape], buffer([shape], -2))) or something like that. Steve -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Monday, May 09, 2011 5:18 PM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges Steve L., Good point; I couldn't do any of this in pre-6.0 either! I tried the buffer and it worked great (but we might have to work on the end-cap types in PDF output)! See http://i52.tinypic.com/2qjc9yv.jpg Best Regards, Brent Fraser On 5/9/2011 2:36 PM, Lime, Steve D (DNR) wrote: These aren't specific to 6.0 though- more of a wish list... Item 1 might be doable in 6.0 as it sits. In 6.0 a style GEOMTRANSFORM is really an expression and I exposed the GEOS buffer operator as a proof-of-concept. For example: STYLE GEOMTRANSFORM (buffer([shape], -2)) OUTLINECOLOR 255 0 0 END Should generate a single pixel red line on the inside of a polygon shape. You can render it however you'd like. Note that a GEOMTRANSFORM is performed AFTER a shape is converted from map to image coordinates so it's effective for rendering effects only. If we exposed a few others you'd be able to do some other interesting things (like fills just inside a line...). The rest of the ideas are interesting and worthy of discussion. Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Brent Fraser Sent: Monday, May 09, 2011 2:52 PM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] Rendering Challenges While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) 3. Rotate anno if required to fit inside a polygon 4. Place polygon annotation outside polygon if anno doesn't fit inside 5. Place line anno above (or below) when using ANGLE FOLLOW 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) 7. User specified character spacing 8. Erase lines (but not other objects) under annotation My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rendering Challenges
Thomas, Interesting. I suspect all the polygons are digitized the same was as I think this is a requirement for shapefiles. The result of using: STYLE OUTLINECOLOR 255 211 127 OFFSET 1.5 -99 WIDTH 3 END results in http://i54.tinypic.com/25a22k4.jpg Close, but notice the bleed outside the polygon at the sharp corners. Thanks! Best Regards, Brent Fraser On 5/10/2011 1:38 AM, thomas bonfort wrote: Brent, those are interesting questions On Mon, May 9, 2011 at 21:51, Brent Fraserbfra...@geoanalytic.com wrote: While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) Along with Steve's buffer proposition, you can already more or less do that with OFFSET , except you don't have the notion of inside/outside, but left/right. If all your polygons are digitized in the same direction (i.e. clockwise or anticlockwise) this can be done with: STYLE #FILL END STYLE OUTLINECOLOR r g b OFFSET 1.5 -99 WIDTH 3 OPACITY 50 END 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) not possible in a single step, but by using the polygon layer a second time in a TYPE LINE layer for labelling should get you close. 3. Rotate anno if required to fit inside a polygon would be a nice addition, ANGLE AUTO for polygon labels. We should probably give some way to define if the label should always follow the longest polygon diagonal, or if it should be first placed horizontally and fall back to automatic angling only if the horizontal one does not fit. 4. Place polygon annotation outside polygon if anno doesn't fit inside The fine tuning on how to place the label text compared to the feature would require new mapfile keywords, but that would seem possible to implement. I'm not sure these kind of automatic adjustments would really enhance the rendered quality though. 5. Place line anno above (or below) when using ANGLE FOLLOW This is something I would like to add to. There's a paper detailing the underlying algorithm here: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.24.6970 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) how is this different than what we already have with a negative GAP? On a side note, vector symbols are currently rather ill-defined in mapserver and would need to be tightened up before being able to use them for precise symbol placement like here. 7. User specified character spacing SIZE AUTO for labels in polygon layers would be a nice addition. We'd have to be able to define how the size of the font varies in accordance with the spacing that is applied between characters. Before going down that road, we shall have to implement the refactoring proposed in http://trac.osgeo.org/mapserver/ticket/3611 so as not to clutter the glyph rendering functions of each renderer. 8. Erase lines (but not other objects) under annotation This seems rather involved. It would be difficult to keep the ordering of layers, as the modified feature could only be drawn during the labelcache phase, i.e. after all other features in the map. My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. So, most of these enhancements seem possible, some were already on my laundry-list of rendering enhancements I'd like to tackle. Creating enhancement tickets for those features is a first step, and funding them is the second ;) regards, thomas -- Best Regards, Brent Fraser ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
RE: [mapserver-users] Rendering Challenges
I don't have a difference operator implemented. Wouldn't take much though... -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Tuesday, May 10, 2011 9:07 AM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges Using STYLE GEOMTRANSFORM difference([shape],buffer([shape], -5)) COLOR255 211 127 END results in the entire original polygon being filled. Using GEOMTRANSFORM (difference([shape],buffer([shape], -5))) results in no fill. Best Regards, Brent Fraser On 5/9/2011 4:20 PM, Lime, Steve D (DNR) wrote: That's were a difference operator might come in handy since you're looking for more of a fill-type effect: GEOMTRANSFORM (difference([shape], buffer([shape], -2))) or something like that. Steve -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Monday, May 09, 2011 5:18 PM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges Steve L., Good point; I couldn't do any of this in pre-6.0 either! I tried the buffer and it worked great (but we might have to work on the end-cap types in PDF output)! See http://i52.tinypic.com/2qjc9yv.jpg Best Regards, Brent Fraser On 5/9/2011 2:36 PM, Lime, Steve D (DNR) wrote: These aren't specific to 6.0 though- more of a wish list... Item 1 might be doable in 6.0 as it sits. In 6.0 a style GEOMTRANSFORM is really an expression and I exposed the GEOS buffer operator as a proof-of-concept. For example: STYLE GEOMTRANSFORM (buffer([shape], -2)) OUTLINECOLOR 255 0 0 END Should generate a single pixel red line on the inside of a polygon shape. You can render it however you'd like. Note that a GEOMTRANSFORM is performed AFTER a shape is converted from map to image coordinates so it's effective for rendering effects only. If we exposed a few others you'd be able to do some other interesting things (like fills just inside a line...). The rest of the ideas are interesting and worthy of discussion. Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Brent Fraser Sent: Monday, May 09, 2011 2:52 PM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] Rendering Challenges While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) 3. Rotate anno if required to fit inside a polygon 4. Place polygon annotation outside polygon if anno doesn't fit inside 5. Place line anno above (or below) when using ANGLE FOLLOW 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) 7. User specified character spacing 8. Erase lines (but not other objects) under annotation My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rendering Challenges
Yes, offset is intended for lines, using it on polygons is abusing it. the buffer+difference method is probably the way to go. note to myself and steve: the OFFSET keyword should be moved into a GEOMTRANSFORM instead of residing in a keyword of its own. -- thomas On Tue, May 10, 2011 at 16:21, Brent Fraser bfra...@geoanalytic.com wrote: Thomas, Interesting. I suspect all the polygons are digitized the same was as I think this is a requirement for shapefiles. The result of using: STYLE OUTLINECOLOR 255 211 127 OFFSET 1.5 -99 WIDTH 3 END results in http://i54.tinypic.com/25a22k4.jpg Close, but notice the bleed outside the polygon at the sharp corners. Thanks! Best Regards, Brent Fraser On 5/10/2011 1:38 AM, thomas bonfort wrote: Brent, those are interesting questions On Mon, May 9, 2011 at 21:51, Brent Fraserbfra...@geoanalytic.com wrote: While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) Along with Steve's buffer proposition, you can already more or less do that with OFFSET , except you don't have the notion of inside/outside, but left/right. If all your polygons are digitized in the same direction (i.e. clockwise or anticlockwise) this can be done with: STYLE #FILL END STYLE OUTLINECOLOR r g b OFFSET 1.5 -99 WIDTH 3 OPACITY 50 END 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) not possible in a single step, but by using the polygon layer a second time in a TYPE LINE layer for labelling should get you close. 3. Rotate anno if required to fit inside a polygon would be a nice addition, ANGLE AUTO for polygon labels. We should probably give some way to define if the label should always follow the longest polygon diagonal, or if it should be first placed horizontally and fall back to automatic angling only if the horizontal one does not fit. 4. Place polygon annotation outside polygon if anno doesn't fit inside The fine tuning on how to place the label text compared to the feature would require new mapfile keywords, but that would seem possible to implement. I'm not sure these kind of automatic adjustments would really enhance the rendered quality though. 5. Place line anno above (or below) when using ANGLE FOLLOW This is something I would like to add to. There's a paper detailing the underlying algorithm here: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.24.6970 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) how is this different than what we already have with a negative GAP? On a side note, vector symbols are currently rather ill-defined in mapserver and would need to be tightened up before being able to use them for precise symbol placement like here. 7. User specified character spacing SIZE AUTO for labels in polygon layers would be a nice addition. We'd have to be able to define how the size of the font varies in accordance with the spacing that is applied between characters. Before going down that road, we shall have to implement the refactoring proposed in http://trac.osgeo.org/mapserver/ticket/3611 so as not to clutter the glyph rendering functions of each renderer. 8. Erase lines (but not other objects) under annotation This seems rather involved. It would be difficult to keep the ordering of layers, as the modified feature could only be drawn during the labelcache phase, i.e. after all other features in the map. My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. So, most of these enhancements seem possible, some were already on my laundry-list of rendering enhancements I'd like to tackle. Creating enhancement tickets for those features is a first step, and funding them is the second ;) regards, thomas -- Best Regards, Brent Fraser ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rendering Challenges
I think it would be very valuable Best Regards, Brent Fraser On 5/10/2011 8:25 AM, Lime, Steve D (DNR) wrote: I don't have a difference operator implemented. Wouldn't take much though... -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Tuesday, May 10, 2011 9:07 AM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges Using STYLE GEOMTRANSFORM difference([shape],buffer([shape], -5)) COLOR255 211 127 END results in the entire original polygon being filled. Using GEOMTRANSFORM (difference([shape],buffer([shape], -5))) results in no fill. Best Regards, Brent Fraser On 5/9/2011 4:20 PM, Lime, Steve D (DNR) wrote: That's were a difference operator might come in handy since you're looking for more of a fill-type effect: GEOMTRANSFORM (difference([shape], buffer([shape], -2))) or something like that. Steve -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Monday, May 09, 2011 5:18 PM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges Steve L., Good point; I couldn't do any of this in pre-6.0 either! I tried the buffer and it worked great (but we might have to work on the end-cap types in PDF output)! See http://i52.tinypic.com/2qjc9yv.jpg Best Regards, Brent Fraser On 5/9/2011 2:36 PM, Lime, Steve D (DNR) wrote: These aren't specific to 6.0 though- more of a wish list... Item 1 might be doable in 6.0 as it sits. In 6.0 a style GEOMTRANSFORM is really an expression and I exposed the GEOS buffer operator as a proof-of-concept. For example: STYLE GEOMTRANSFORM (buffer([shape], -2)) OUTLINECOLOR 255 0 0 END Should generate a single pixel red line on the inside of a polygon shape. You can render it however you'd like. Note that a GEOMTRANSFORM is performed AFTER a shape is converted from map to image coordinates so it's effective for rendering effects only. If we exposed a few others you'd be able to do some other interesting things (like fills just inside a line...). The rest of the ideas are interesting and worthy of discussion. Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Brent Fraser Sent: Monday, May 09, 2011 2:52 PM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] Rendering Challenges While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) 3. Rotate anno if required to fit inside a polygon 4. Place polygon annotation outside polygon if anno doesn't fit inside 5. Place line anno above (or below) when using ANGLE FOLLOW 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) 7. User specified character spacing 8. Erase lines (but not other objects) under annotation My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
RE: [mapserver-users] Rendering Challenges
I've attached a patch against trunk that adds the difference function. It's untested, give it a whirl and let me know how it goes... You'll have to re-build the lexer and parser. Steve -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Tuesday, May 10, 2011 9:42 AM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges I think it would be very valuable Best Regards, Brent Fraser On 5/10/2011 8:25 AM, Lime, Steve D (DNR) wrote: I don't have a difference operator implemented. Wouldn't take much though... -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Tuesday, May 10, 2011 9:07 AM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges Using STYLE GEOMTRANSFORM difference([shape],buffer([shape], -5)) COLOR255 211 127 END results in the entire original polygon being filled. Using GEOMTRANSFORM (difference([shape],buffer([shape], -5))) results in no fill. Best Regards, Brent Fraser On 5/9/2011 4:20 PM, Lime, Steve D (DNR) wrote: That's were a difference operator might come in handy since you're looking for more of a fill-type effect: GEOMTRANSFORM (difference([shape], buffer([shape], -2))) or something like that. Steve -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Monday, May 09, 2011 5:18 PM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges Steve L., Good point; I couldn't do any of this in pre-6.0 either! I tried the buffer and it worked great (but we might have to work on the end-cap types in PDF output)! See http://i52.tinypic.com/2qjc9yv.jpg Best Regards, Brent Fraser On 5/9/2011 2:36 PM, Lime, Steve D (DNR) wrote: These aren't specific to 6.0 though- more of a wish list... Item 1 might be doable in 6.0 as it sits. In 6.0 a style GEOMTRANSFORM is really an expression and I exposed the GEOS buffer operator as a proof-of-concept. For example: STYLE GEOMTRANSFORM (buffer([shape], -2)) OUTLINECOLOR 255 0 0 END Should generate a single pixel red line on the inside of a polygon shape. You can render it however you'd like. Note that a GEOMTRANSFORM is performed AFTER a shape is converted from map to image coordinates so it's effective for rendering effects only. If we exposed a few others you'd be able to do some other interesting things (like fills just inside a line...). The rest of the ideas are interesting and worthy of discussion. Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Brent Fraser Sent: Monday, May 09, 2011 2:52 PM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] Rendering Challenges While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) 3. Rotate anno if required to fit inside a polygon 4. Place polygon annotation outside polygon if anno doesn't fit inside 5. Place line anno above (or below) when using ANGLE FOLLOW 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) 7. User specified character spacing 8. Erase lines (but not other objects) under annotation My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. difference.patch Description: difference.patch ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rendering Challenges
Steve, So I've done C:\svn -r 11667 co https://svn.osgeo.org/mapserver/trunk/mapserver mapserver-6.0.0-r11667 C:\ mapserver-6.0.0-r11667 patch difference.patch patching file mapparser.y patching file mapserver.h patching file maplexer.l C:\ mapserver-6.0.0-r11667 flex -Pmsyy -i -omaplexer.c maplexer.l but my make results in: Creating library mapserver_i.lib and object mapserver_i.exp mapfile.obj : error LNK2019: unresolved external symbol _msyylex_destroy referenced in function _msUpdateLabelFromString maputil.obj : error LNK2001: unresolved external symbol _msyylex_destroy Did I miss a step? Best Regards, Brent Fraser On 5/10/2011 9:32 AM, Lime, Steve D (DNR) wrote: I've attached a patch against trunk that adds the difference function. It's untested, give it a whirl and let me know how it goes... You'll have to re-build the lexer and parser. Steve -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Tuesday, May 10, 2011 9:42 AM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges I think it would be very valuable Best Regards, Brent Fraser On 5/10/2011 8:25 AM, Lime, Steve D (DNR) wrote: I don't have a difference operator implemented. Wouldn't take much though... -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Tuesday, May 10, 2011 9:07 AM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges Using STYLE GEOMTRANSFORM difference([shape],buffer([shape], -5)) COLOR255 211 127 END results in the entire original polygon being filled. Using GEOMTRANSFORM (difference([shape],buffer([shape], -5))) results in no fill. Best Regards, Brent Fraser On 5/9/2011 4:20 PM, Lime, Steve D (DNR) wrote: That's were a difference operator might come in handy since you're looking for more of a fill-type effect: GEOMTRANSFORM (difference([shape], buffer([shape], -2))) or something like that. Steve -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Monday, May 09, 2011 5:18 PM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges Steve L., Good point; I couldn't do any of this in pre-6.0 either! I tried the buffer and it worked great (but we might have to work on the end-cap types in PDF output)! See http://i52.tinypic.com/2qjc9yv.jpg Best Regards, Brent Fraser On 5/9/2011 2:36 PM, Lime, Steve D (DNR) wrote: These aren't specific to 6.0 though- more of a wish list... Item 1 might be doable in 6.0 as it sits. In 6.0 a style GEOMTRANSFORM is really an expression and I exposed the GEOS buffer operator as a proof-of-concept. For example: STYLE GEOMTRANSFORM (buffer([shape], -2)) OUTLINECOLOR 255 0 0 END Should generate a single pixel red line on the inside of a polygon shape. You can render it however you'd like. Note that a GEOMTRANSFORM is performed AFTER a shape is converted from map to image coordinates so it's effective for rendering effects only. If we exposed a few others you'd be able to do some other interesting things (like fills just inside a line...). The rest of the ideas are interesting and worthy of discussion. Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Brent Fraser Sent: Monday, May 09, 2011 2:52 PM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] Rendering Challenges While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) 3. Rotate anno if required to fit inside a polygon 4. Place polygon annotation outside polygon if anno doesn't fit inside 5. Place line anno above (or below) when using ANGLE FOLLOW 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) 7. User specified character spacing 8. Erase lines (but not other objects) under annotation My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rendering Challenges
Brent, I think this is an excellent list of features that we should strive to support in mapserver. I here that you ideal stated goal is to use the files as published, but as a close alternative I can see that having a utility to preprocess the files might make implementation faster and and more consistent. This thought is based on some simple ideas: 1. what is inside/outside of a polygon? While we can compute this for every polygon on every draw, I do not think we want to do that, so having a preprocessor that standardizes polygon node ordering would avoid this. 2. polygon label point and orientations. It would be nice to have a utility, or the one above, that can do some basic analysis of a polygon and pick the ideal label point and orientation. This then might create a companion label point shapefile or add additional attribute columns for this purpose. This approach also has the benefit that you could then edit the label point file to override the automatically generated point. I think these two items would greatly increase our ability to implement in a consistent manner items 1, 2, 3, and 4. On 5/9/2011 3:51 PM, Brent Fraser wrote: While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) 3. Rotate anno if required to fit inside a polygon 4. Place polygon annotation outside polygon if anno doesn't fit inside 5. Place line anno above (or below) when using ANGLE FOLLOW 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) 7. User specified character spacing 8. Erase lines (but not other objects) under annotation For this one, do you want to erase ALL lines or just suspend drawing the line of the object being labeled? If you truely want to erase all lines, then you have to define what is a line! antialiased? wide lines? how is a line different from the highlighted edge of a polygon? or a line that has been drawn as a wide street with shoulders and a centerline? Currently we support drawing a multi-pixel halo around the text the in effect erases/replaces everything under the halo. I like your example image as a great use case. Thanks, -Steve My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
RE: [mapserver-users] Rendering Challenges
These aren't specific to 6.0 though- more of a wish list... Item 1 might be doable in 6.0 as it sits. In 6.0 a style GEOMTRANSFORM is really an expression and I exposed the GEOS buffer operator as a proof-of-concept. For example: STYLE GEOMTRANSFORM (buffer([shape], -2)) OUTLINECOLOR 255 0 0 END Should generate a single pixel red line on the inside of a polygon shape. You can render it however you'd like. Note that a GEOMTRANSFORM is performed AFTER a shape is converted from map to image coordinates so it's effective for rendering effects only. If we exposed a few others you'd be able to do some other interesting things (like fills just inside a line...). The rest of the ideas are interesting and worthy of discussion. Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Brent Fraser Sent: Monday, May 09, 2011 2:52 PM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] Rendering Challenges While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) 3. Rotate anno if required to fit inside a polygon 4. Place polygon annotation outside polygon if anno doesn't fit inside 5. Place line anno above (or below) when using ANGLE FOLLOW 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) 7. User specified character spacing 8. Erase lines (but not other objects) under annotation My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. -- Best Regards, Brent Fraser ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rendering Challenges
Steve W., The reason I'd like to minimize any pre-processing is that NRCan publishes about 30 GB of shapefiles for the map series. And they publish a complete new version of these every 6 months. Currently I build tileindexes, and I expect I'll have to do other pre-processing steps to get the rendered output I'd like. The answer may be to load the data into PostGIS (every 6 months) and use its functions to make the data suitable for Mapserver. Maybe not. I've been thinking about a pre-processing commandline utility based on OGR and the GEOS functions it supports (and other functions it will hopefully support in the future). One thing I have to do is a LineMerge on the rivers shapefile so they will label in Mapserver. Currently a river will have many short segments broken at every tributary preventing any segment to be long enough to support a label. Having a separate pre-calculated shapefile for polygon annotation might get me closer to my goal. Dunno about the impact of having to support any arbitrary scale the user may view the map... NRCan's cartographers have it easy; they just have to render the data a one scale! And since it is [just] basemap data I suppose I could use Mapnik to render tiles, but that feels wrong. I'd much rather help to improve Mapserver. As for the erasing of lines, I want just the contour lines under the label not to be drawn. I've used OUTLINECOLOR in the past but have been unhappy with the results (segments visible between characters, other features erased). I suppose the lines could be clipped to the bounding boxes of the contour labels, but due to the potentially curved nature of the contour labels I think the clipping polygons would have to be something like the convex hull of the character boxes. Best Regards, Brent Fraser On 5/9/2011 2:30 PM, Stephen Woodbridge wrote: Brent, I think this is an excellent list of features that we should strive to support in mapserver. I here that you ideal stated goal is to use the files as published, but as a close alternative I can see that having a utility to preprocess the files might make implementation faster and and more consistent. This thought is based on some simple ideas: 1. what is inside/outside of a polygon? While we can compute this for every polygon on every draw, I do not think we want to do that, so having a preprocessor that standardizes polygon node ordering would avoid this. 2. polygon label point and orientations. It would be nice to have a utility, or the one above, that can do some basic analysis of a polygon and pick the ideal label point and orientation. This then might create a companion label point shapefile or add additional attribute columns for this purpose. This approach also has the benefit that you could then edit the label point file to override the automatically generated point. I think these two items would greatly increase our ability to implement in a consistent manner items 1, 2, 3, and 4. On 5/9/2011 3:51 PM, Brent Fraser wrote: While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) 3. Rotate anno if required to fit inside a polygon 4. Place polygon annotation outside polygon if anno doesn't fit inside 5. Place line anno above (or below) when using ANGLE FOLLOW 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) 7. User specified character spacing 8. Erase lines (but not other objects) under annotation For this one, do you want to erase ALL lines or just suspend drawing the line of the object being labeled? If you truely want to erase all lines, then you have to define what is a line! antialiased? wide lines? how is a line different from the highlighted edge of a polygon? or a line that has been drawn as a wide street with shoulders and a centerline? Currently we support drawing a multi-pixel halo around the text the in effect erases/replaces everything under the halo. I like your example image as a great use case. Thanks, -Steve My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org
Re: [mapserver-users] Rendering Challenges
Steve L., Good point; I couldn't do any of this in pre-6.0 either! I tried the buffer and it worked great (but we might have to work on the end-cap types in PDF output)! See http://i52.tinypic.com/2qjc9yv.jpg Best Regards, Brent Fraser On 5/9/2011 2:36 PM, Lime, Steve D (DNR) wrote: These aren't specific to 6.0 though- more of a wish list... Item 1 might be doable in 6.0 as it sits. In 6.0 a style GEOMTRANSFORM is really an expression and I exposed the GEOS buffer operator as a proof-of-concept. For example: STYLE GEOMTRANSFORM (buffer([shape], -2)) OUTLINECOLOR 255 0 0 END Should generate a single pixel red line on the inside of a polygon shape. You can render it however you'd like. Note that a GEOMTRANSFORM is performed AFTER a shape is converted from map to image coordinates so it's effective for rendering effects only. If we exposed a few others you'd be able to do some other interesting things (like fills just inside a line...). The rest of the ideas are interesting and worthy of discussion. Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Brent Fraser Sent: Monday, May 09, 2011 2:52 PM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] Rendering Challenges While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) 3. Rotate anno if required to fit inside a polygon 4. Place polygon annotation outside polygon if anno doesn't fit inside 5. Place line anno above (or below) when using ANGLE FOLLOW 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) 7. User specified character spacing 8. Erase lines (but not other objects) under annotation My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
RE: [mapserver-users] Rendering Challenges
That's were a difference operator might come in handy since you're looking for more of a fill-type effect: GEOMTRANSFORM (difference([shape], buffer([shape], -2))) or something like that. Steve -Original Message- From: Brent Fraser [mailto:bfra...@geoanalytic.com] Sent: Monday, May 09, 2011 5:18 PM To: Lime, Steve D (DNR) Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Rendering Challenges Steve L., Good point; I couldn't do any of this in pre-6.0 either! I tried the buffer and it worked great (but we might have to work on the end-cap types in PDF output)! See http://i52.tinypic.com/2qjc9yv.jpg Best Regards, Brent Fraser On 5/9/2011 2:36 PM, Lime, Steve D (DNR) wrote: These aren't specific to 6.0 though- more of a wish list... Item 1 might be doable in 6.0 as it sits. In 6.0 a style GEOMTRANSFORM is really an expression and I exposed the GEOS buffer operator as a proof-of-concept. For example: STYLE GEOMTRANSFORM (buffer([shape], -2)) OUTLINECOLOR 255 0 0 END Should generate a single pixel red line on the inside of a polygon shape. You can render it however you'd like. Note that a GEOMTRANSFORM is performed AFTER a shape is converted from map to image coordinates so it's effective for rendering effects only. If we exposed a few others you'd be able to do some other interesting things (like fills just inside a line...). The rest of the ideas are interesting and worthy of discussion. Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Brent Fraser Sent: Monday, May 09, 2011 2:52 PM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] Rendering Challenges While testing v6, I can up with the following list of things I couldn't do (see http://i56.tinypic.com/8vvprn.png for a graphic): 1. Render lines inside polygon boundary (with or without opacity) 2. Place polygon annotation on/inside boundary line (http://trac.osgeo.org/mapserver/ticket/1592 point 8.) 3. Rotate anno if required to fit inside a polygon 4. Place polygon annotation outside polygon if anno doesn't fit inside 5. Place line anno above (or below) when using ANGLE FOLLOW 6. Rotate vector symbols to follow lines (a font might work but is a pain to create) 7. User specified character spacing 8. Erase lines (but not other objects) under annotation My goal was to use the published shp files (http://ftp2.cits.rncan.gc.ca/pub/canvec/50k_shp/092/h/canvec_092h06_shp.zip) without modification and see how close I could get to the published PDF (http://ftp2.cits.rncan.gc.ca/pub/cantopo/50k_geopdf/092/h/cantopo_092h06_geopdf.zip). Any suggested rendering techniques are appreciated. I'll file tickets for those problems deemed worthy. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
