Test for fillarea concave. (#319)

* Support concave polygons for fillarea.

* Test for fillarea concave.

* Don't make doctest to avoid timeout.

.travis.yml

@@ -28,8 +28,5 @@ script:
 - rm -rf build
 - python setup.py install --old-and-unmanageable
 - python run_tests.py -n2 -g --no-vtk-ui
-  #- cd docs
-  #- make doctest
-  #- cd ..
 after_success:
     - if [ "$TRAVIS_BRANCH" == "master" -a "$TRAVIS_PULL_REQUEST" == "false" ]; then conda install -n root conda-build anaconda-client && bash ci-support/conda_upload.sh ; fi

tests/test_vcs_fillarea_concave.py

@@ -0,0 +1,19 @@
+import basevcstest
+
+
+class TestVCSFillareaConcave(basevcstest.VCSBaseTest):
+    def test(self):
+        o = self.x.createfillarea()
+        xs = [-70.0, -66.0, -62.0, -58.0, -54.0, -50.0,
+              -46.0, -46.0, -50.0, -54.0, -58.0, -62.0,
+              -66.0, -70.0]
+        ys = [97.40004179212772, 99.24051369561087, 99.64501380920407,
+              99.50791666242807, 99.25809764862053, 98.72724999321828,
+              97.86243057250978, 66.1760279867384, 78.08891693751016,
+              84.6064443588257, 75.83586128552756, 54.88270839055378,
+              33.08841943740845, 32.207757042513954]
+        o.x = xs
+        o.y = ys
+        o.worldcoordinate = [-70,-35,30,100]
+        self.x.plot(o)
+        self.checkImage("test_vcs_fillarea_concave.png")

vcs/vcs2vtk.py

@@ -1437,9 +1437,13 @@ def prepFillarea(context, renWin, farea, cmap=None):
     # Transform points
     geo, pts = project(pts, farea.projection, farea.worldcoordinate)
     polygonPolyData.SetPoints(pts)
+    # for concave polygons
+    tris = vtk.vtkTriangleFilter()
+    tris.SetInputData(polygonPolyData)
+
     # Setup rendering
     m = vtk.vtkPolyDataMapper()
-    m.SetInputData(polygonPolyData)
+    m.SetInputConnection(tris.GetOutputPort())
     a = vtk.vtkActor()
     a.SetMapper(m)
     ren, xscale, yscale = context.fitToViewport(a,