Stacho Mudrak wrote:
There was no traffic in the mailing list, so I was worried, that all the people that tried therion are disappointed with it.
Or perhaps we're all away surveying new caves, rather than drawing them up ;-) I've just got back from a month on expedition, and as soon I've caught up with work will be scanning in some new scraps...
Wookey wrote:
Colour scrap by altitude is nice but the abrubt joins can look nasty in the middle of wide, nominally horizontal passage. It works really well in the 'soundriver' area where there are nicely-merging shades of green, but nastily in other some other areas. Some way to graduate the join a bit would make it look a lot nicer. Or apply more detailed colour control to a scrap like 'nearly the same as neighbour scrapname'.
This I have to discuss with MartinB. As far as I know PDF - some gradient colorings are possible, but only for triangles. Not for bezier curves. So in principle, there are two possibilities:
I thought that the PDF spec provided considerable flexability in the shadings, and it seems that it does. From the Fourth edition of the PDF reference, page 267 (avalable from: http://partners.adobe.com/public/developer/en/pdf/PDFReference15_v5.pdf .) ------------ Various shading types are available, depending on the value of the dictionary’s ShadingType entry: • Function-based shadings (type 1) define the color of every point in the domain using a mathematical function (not necessarily smooth or continuous). • Axial shadings (type 2) define a color blend along a line between two points, optionally extended beyond the boundary points by continuing the boundary colors. • Radial shadings (type 3) define a blend between two circles, optionally extended beyond the boundary circles by continuing the boundary colors. This type of shading is commonly used to represent three-dimensional spheres and cones. • Free-form Gouraud-shaded triangle meshes (type 4) define a common construct used by many three-dimensional applications to represent complex colored and shaded shapes. Vertices are specified in free-form geometry. • Lattice-form Gouraud-shaded triangle meshes (type 5) are based on the same geometrical construct as type 4, but with vertices specified as a pseudorectangular lattice. • Coons patch meshes (type 6) construct a shading from one or more color patches, each bounded by four cubic Bézier curves. • Tensor-product patch meshes (type 7) are similar to type 6, but with additional control points in each patch, affording greater control over color mapping. ------------ But a simple linear gradient across the join points of two scraps with different colours would give a big improvement. Cheers, John