Ian,
Down in the heart of the MapServer code, style.symbol is all that
counts. The symbolname attribute is (only) for convenience. The
closest thing we have in mapscript now is
symbol_index = map.symbolset.index("some_name")
style.symbol = symbol_index
cheers,
Sean
On Dec 15, 2005, at 9:03 AM, Ian Erickson wrote:
Alright,
Got it working - Thanks! The following code is what I ended up
using -
in case anyone else needs it. Also, I noticed that the styleObj does
not seem to work properly when using the symbolname property. I was
forced to user the symbol index instead. Any reason why this might
be?
Code follows:
mapObj m_obj = new mapObj(@"C:\base.map");
layerObj layer = new layerObj(m_obj);
layer.name = "PointLayer";
layer.type = MS_LAYER_TYPE.MS_LAYER_POINT;
layer.setProjection("init=epsg:4326");
layer.status = 1;
classObj c = new classObj(layer);
c.name = "MARKER";
c.label.type = MS_FONT_TYPE.MS_TRUETYPE;
c.label.font = "arial";
c.label.size = 7;
c.label.color.setRGB(0, 0, 0);
c.label.outlinecolor.setRGB(255, 255, 255);
styleObj style = new styleObj(c);
style.symbol = 7;
// style.symbolname = "circle";
style.antialias = 1;
style.minsize = 12;
style.maxsize = 12;
style.size = 12;
style.color.setRGB(192, 0, 0);
style.outlinecolor.setRGB(255, 0, 0);
imageObj i_obj = m_obj.draw();
pointObj p = new pointObj(-111.4752, 33.377321, 0.0, 0.0);
Console.WriteLine("p.x = " + p.x);
Console.WriteLine("p.y = " + p.y);
p.draw(m_obj, layer, i_obj, 0, "TEXT");
p.Dispose();
try
{
i_obj.save(@"C:\output.png",m_obj);
} catch (Exception e)
{
Console.Writeln(e.printStackTrace());
}
Sean Gillies wrote:
On Dec 14, 2005, at 8:13 PM, Ian Erickson wrote:
Alright,
I've compiled a working version of the mapscript_csharp assembly and
everything seems to be working fine. I can load, enumerate the
layers,
and save a copy of the image to the file system. However, I
need to
add
a point to a dynamically created layer (all of this mind you in C#).
Here's what I've got:
mapObj m_obj = new mapObj(@"C:\base.map");
layerObj layer = new layerObj(m_obj);
layer.name = "PointLayer";
layer.type = MS_LAYER_TYPE.MS_LAYER_POINT;
layer.setProjection("init=epsg:4326");
layer.status = 1;
classObj c = new classObj(layer);
c.label.type = MS_FONT_TYPE.MS_TRUETYPE;
c.label.font = "arial";
c.label.size = 7;
c.label.color.setRGB(0, 0, 0);
c.label.outlinecolor.setRGB(255, 255, 255);
styleObj style = new styleObj(c);
style.symbolname = "circle";
style.size = 14;
style.color.setRGB(0, 255, 0);
style.outlinecolor.setRGB(0, 0, 0);
Console.WriteLine ("# Map layers " + m_obj.numlayers + ";
Map
name = " + m_obj.name);
for (int i=0; i<m_obj.numlayers; i++)
{
Console.WriteLine("Layer [" + i + "] name: " +
m_obj.getLayer(i).name);
}
imageObj i_obj = m_obj.draw();
pointObj p = new pointObj(-111.4752, 33.377321, 0.0, 0.0);
lineObj l = new lineObj();
l.add(p);
shapeObj s = new shapeObj(0);
s.add(l);
s.text = "TEXT";
layer.addFeature(s);
p.draw(m_obj, layer, i_obj, 0, "TEXT");
Ian,
The last two lines here are redundant. There are 3 different ways to
render a point.
1) pointObj#draw
2) shapeObj#draw
3) layer#addFeature and then layer#draw
You're doing a little bit of each. I recommend that you go with #1
and delete the lines in between the creation of the new point, and
p.draw().
s.Dispose();
l.Dispose();
p.Dispose();
Console.ReadLine();
As I mentioned, the assembly is creating the appropriate file, and
everything seems to be working - with the exception of creating
a point
symbol on the new layer. No exceptions are thrown so I must be
missing
something crucial. If anyone can provide some hints, I'd be
grateful!
How do you know that points are not drawn? Are you saving the
imageObj? I can't tell from the code.
---
Sean Gillies
sgillies at frii dot com
http://zcologia.com/news
--
Ian Erickson
AnalyGIS, LLC
Gold Canyon, AZ 85218
http:// www.analygis.com
tel: 480.677.6260
mob: 480.221.7173
fax: 480.677.6261
See AnalyGIS at work:
http://65.39.85.13/google/
http://65.39.85.13/virtualearth/
---
Sean Gillies
sgillies at frii dot com
http://zcologia.com/news
