Hi,
I have a mbstyle style stating:
"paint": {
"fill-color": "hsl(82, 46%, 72%)",
"fill-opacity": {
"base": 1,
"stops": [
[8, 0.6],
[22, 1]
]
}
},
and the translation looks like:
<sld:FeatureTypeStyle>
<sld:Name>landcover_wood</sld:Name>
<sld:Title>MBStyle landcover_wood</sld:Title>
<sld:Abstract>Generated for landcover</sld:Abstract>
<sld:SemanticTypeIdentifier>POLYGON</sld:SemanticTypeIdentifier>
<sld:Rule>
<sld:Name>landcover_wood</sld:Name>
<ogc:Filter>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>class</ogc:PropertyName>
<ogc:Literal>wood</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Filter>
<sld:MinScaleDenominator>133.2955989720566</sld:MinScaleDenominator>
<sld:MaxScaleDenominator>2183915.0935581755</sld:MaxScaleDenominator>
<sld:PolygonSymbolizer uom="
http://www.opengeospatial.org/se/units/pixel";>
<sld:Fill>
<sld:CssParameter name="fill"/>
<sld:CssParameter name="fill-opacity">
<ogc:Function name="Interpolate">
<ogc:Function name="zoomLevel">
<ogc:Function name="env">
<ogc:Literal>wms_scale_denominator</ogc:Literal>
</ogc:Function>
<ogc:Literal>EPSG:3857</ogc:Literal>
</ogc:Function>
<ogc:Literal>8</ogc:Literal>
<ogc:Literal>0.6</ogc:Literal>
<ogc:Literal>numeric</ogc:Literal>
</ogc:Function>
</sld:CssParameter>
</sld:Fill>
<sld:Stroke>
<sld:CssParameter name="stroke"/>
<sld:CssParameter name="stroke-opacity">
<ogc:Function name="Interpolate">
<ogc:Function name="zoomLevel">
<ogc:Function name="env">
<ogc:Literal>wms_scale_denominator</ogc:Literal>
</ogc:Function>
<ogc:Literal>EPSG:3857</ogc:Literal>
</ogc:Function>
<ogc:Literal>8</ogc:Literal>
<ogc:Literal>0.6</ogc:Literal>
<ogc:Literal>numeric</ogc:Literal>
</ogc:Function>
</sld:CssParameter>
</sld:Stroke>
</sld:PolygonSymbolizer>
</sld:Rule>
</sld:FeatureTypeStyle>
<sld:FeatureTypeStyle>
<sld:Name>landcover_wood</sld:Name>
<sld:Title>MBStyle landcover_wood</sld:Title>
<sld:Abstract>Generated for landcover</sld:Abstract>
<sld:SemanticTypeIdentifier>POLYGON</sld:SemanticTypeIdentifier>
<sld:Rule>
<sld:Name>landcover_wood</sld:Name>
<ogc:Filter>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>class</ogc:PropertyName>
<ogc:Literal>wood</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Filter>
<sld:MaxScaleDenominator>133.2955989720566</sld:MaxScaleDenominator>
<sld:PolygonSymbolizer uom="
http://www.opengeospatial.org/se/units/pixel";>
<sld:Fill>
<sld:CssParameter name="fill"/>
<sld:CssParameter name="fill-opacity">
<ogc:Function name="Interpolate">
<ogc:Function name="zoomLevel">
<ogc:Function name="env">
<ogc:Literal>wms_scale_denominator</ogc:Literal>
</ogc:Function>
<ogc:Literal>EPSG:3857</ogc:Literal>
</ogc:Function>
<ogc:Literal>22</ogc:Literal>
<ogc:Literal>1</ogc:Literal>
<ogc:Literal>numeric</ogc:Literal>
</ogc:Function>
</sld:CssParameter>
</sld:Fill>
<sld:Stroke>
<sld:CssParameter name="stroke"/>
<sld:CssParameter name="stroke-opacity">
<ogc:Function name="Interpolate">
<ogc:Function name="zoomLevel">
<ogc:Function name="env">
<ogc:Literal>wms_scale_denominator</ogc:Literal>
</ogc:Function>
<ogc:Literal>EPSG:3857</ogc:Literal>
</ogc:Function>
<ogc:Literal>22</ogc:Literal>
<ogc:Literal>1</ogc:Literal>
<ogc:Literal>numeric</ogc:Literal>
</ogc:Function>
</sld:CssParameter>
</sld:Stroke>
</sld:PolygonSymbolizer>
</sld:Rule>
</sld:FeatureTypeStyle>
The translation seems strange (buggy?) in a few ways:
- The interpolate should have one more entry for level 22, there is
nothing telling it that it should reach 1... instead there is another
feature type style for level 22, but I don't think the mbstyle is implying
any stacking, isn't the usage of stops meant to be a linear interpolation
(unless explicitly overridden with the "interpolate" attribute, to make it
exponential or spline?)
- The color defined in the fill is not gray, I'm guessing the hsl syntax
is not supported?
- The "base" attribute seems to be ignored, from the spec it seems
related only to the "exponential" interpolation mode... maybe using 1 as
base does not matter, but I see values other than 1 in the style without
any interpolation spec.... dunno what's going on there?
So, am I missing something here or.... those are just bugs?
Cheers
Andrea
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