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Attached to Project: POV-Ray
Opened by Mike H - 2009-11-06
Last edited by Christoph Lipka - 2010-03-29
Opened by Mike H - 2009-11-06
Last edited by Christoph Lipka - 2010-03-29
FS#63 - Extend native support for 2D primitives
Improve native support for 2D primitives. Ideally a 1:1 mapping of SVG primitives/shapes. They go a long way to making diagrams look a lot better. Having to create image maps based on externally created bitmaps slows the workflow down a lot!
Closed by Christoph Lipka
Monday, 29 March 2010, 02:14 GMT
Reason for closing: Deferred
Additional comments about closing:
Monday, 29 March 2010, 02:14 GMT
Reason for closing: Deferred
Additional comments about closing:
No clarifying response from original
requestor for many months
This needs clarification: Is this a request for support of 2D primitives for texturing (you mention image maps), or rather for geometry (as in, 2D primitives extruded to 3D geometric shapes, aka prisms; this is the category you assigned it to)?
From http://www.w3c.nl/CourseSlides/2000/SVG_SMIL/SVG/svg1/slide16-0.htm
<rect x="0" y="0" rx="5" ry="5" width="40" height="20"/>
<circle cx="200" cy="200" r="100" />
<ellipse cx="200" cy="200" rx="100" ry="60" />
<polyline points="20,20 50,100 200,80 70,300" />
<polygon points="20,20 50,100 200,80 70,300" />
<line x1="10" y1="20" x2="15" y2="7" />
circle = disc
ellipse = disc + scale
polygon = polygon !
rect = flat box, but rounded corners would be a bonus
line = flat box + rotate, but need a pen size!
polyline = sequence of flat box & connecting disc, also need a pen size
IMNSHO, forget the line/polyline unless you feel like displaying some splines.
Interesting primitive that remains: the rounded corner for rectangle (notice that the x & y radius are specified, but are applied to the 4 corners).
suggested naming:
rectangle { <x,y>,<w,h> [ <rx,ry> ] ... }
(like polygon ? implicit plane x0y ?)
or do we want a set of 3D vectors ?
rectangle { center_3D, width_vector, height_vector [ ,<rx,ry> ] ... }
As Patch_object, they won't be usable in CSG... as usual.
Isn't a rounded rectangle just a disc intersected with a rectangle (and possibly another disc) as CSG?
And a line size is the width of a rectangle?