I was using bitmaps, but the mesh pattern looks interesting. I'll have to take a look.
On Thu, Aug 7, 2014 at 3:07 AM, Andreas Lobinger <[email protected]> wrote: > Keno: How do you paint the triangles? As bitmap, or via mesh pattern > http://cairographics.org/manual/cairo-cairo-pattern-t.html#cairo-pattern-create-mesh? > > > On Thursday, August 7, 2014 12:54:43 AM UTC+2, Keno Fischer wrote: > >> I have some code that does this for a triangular mesh, using Cairo.jl >> directly probably not too hard to adapt that to arbitrary shapes. I don't >> think it is quite correct though as I'm getting artifacts on element >> boundaries that I haven't been able to figure out. >> >> >> On Wed, Aug 6, 2014 at 4:23 PM, Andrea Vigliotti <[email protected]> >> wrote: >> >>> Hi Simon, >>> >>> >>> thanks for the interest! >>> >>> I'm attaching a picture of what I would like to obtain, >>> >>> >>> <https://lh5.googleusercontent.com/-WNX2ICZAEdw/U-KN7I_KAMI/AAAAAAAACxI/nmEUPlO3pwI/s1600/sample.png> >>> >>> This was done with the Matlab "patch", here the colours map the nodal >>> displacement >>> >>> below there is a picture obtained within Julia's PyPlot using the >>> command "fill" >>> >>> >>> <https://lh6.googleusercontent.com/-gVsqkJhMttg/U-KOVToqhxI/AAAAAAAACxQ/UUY74OaOr2o/s1600/sample_julia.png> >>> >>> as you can see I in this image there is no mapping >>> >>> >>> thanks again! >>> >>> >>> andrea >>> >>> >>> >>> >>> On Wednesday, 6 August 2014 20:38:24 UTC+1, Simon Danisch wrote: >>>> >>>> Can you explain your data from a pure visual stand point? >>>> I don't completely get, what should be part of the visualization, and >>>> what part belongs to your problem... >>>> This sounds like it could be easily doable with GLPlot, depending on >>>> your concrete needs. >>>> If its not possible, I might want to implement it;) >>>> Defining 3D/2D edges with color values, adding faces that connect the >>>> edges and then interpolating the color values per pixel, is one of the most >>>> basic tasks in OpenGL. >>>> >>>> Am Mittwoch, 6. August 2014 15:22:57 UTC+2 schrieb Andrea Vigliotti: >>>>> >>>>> Hi All, >>>>> >>>>> >>>>> does anyboby know how to plot a 2D polygonal patch with interpolated >>>>> colouring, based on the nodal values? >>>>> >>>>> I would basically like to reproduce the matlab "patch" command, and I >>>>> need it to post-process some simulation results from on a finite element >>>>> model, what I would like to obtain is some contour filled plot on the >>>>> deformed model, which has an arbitrary shape >>>>> >>>>> PyPlot includes the fill() command that draws filled polygonal with >>>>> flat colour, but I couldn't find a version that plots polygons with >>>>> interpolated colours, >>>>> >>>>> do you guys have any suggestion about this? >>>>> >>>>> thanks, >>>>> >>>>> andrea >>>>> >>>> >>
