update docs/tests

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## [v2.11.0] - forthcoming 2021-03...
+## [v2.11.0] - 2021-04-06
 
 ### Added
 
@@ -11,6 +11,7 @@
 - CI now ci.yml rather than travis
 - texttrack() switch to textoutlines()
 - beziersegmentangles() bug fixed
+- bug in isarcclockwise() fixed (thanks @johannes-fischer!)
 
 ### Removed
 

Project.toml

@@ -26,8 +26,8 @@ test = ["Test"]
 julia         = "1.3"
 Cairo         = "0.7, 0.8, 1.0"
 Colors        = "0.9, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 1.0"
-FileIO        = "1.0, 1.1, 1.2, 1.3, 1.4"
-ImageMagick   = "0.7, 1.0, 1.1"
+FileIO        = "1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6"
+ImageMagick   = "0.7, 1.0, 1.1, 1.2"
 Juno          = "0.7, 0.8"
 QuartzImageIO = "0.6, 0.7"
 Rsvg          = "1.0"

docs/src/livegraphics.md

@@ -104,7 +104,7 @@ A _snapshot_ is a view of the current Luxor drawing in its current state, before
 
     You can take a snapshot only for drawings created using the `:rec` (recording) format.
 
-The following composite image shows a Julia set at different resolutions. The `snapshot()` call saves the current drawing for a few different values of the `stepby` parameter.
+The following code exports a series of snapshots made with `snapshot()`, showing the state of the computation for different values of the `stepby` parameter. (This image is a composite of all the snapshots.)
 
 ![juliaset](assets/figures/julia-set-set.png)
 

src/curves.jl

@@ -54,6 +54,8 @@ Find the radius and center point for three points lying on a circle.
 returns `(centerpoint, radius)` of a circle.
 
 If there's no such circle, the function returns `(Point(0, 0), 0)`.
+
+If two of the points are the same, use `circle(pt1, pt2)` instead.
 """
 function center3pts(p1::Point, p2::Point, p3::Point)
     norm2(p::Point) = (p.x)^2+(p.y)^2

test/triangles.jl

@@ -13,7 +13,7 @@ function triangle_tests(fname)
     background("white")
     fontsize(10)
 
-    panes = Tiler(500, 500, 1, 2)
+    panes = Tiler(500, 500, 2, 2)
 
     @layer begin
         translate(first(panes[1]))
@@ -44,13 +44,31 @@ function triangle_tests(fname)
         center = trianglecenter(tri2...)
         circumcenter = trianglecircumcenter(tri2...)
         circle.((orthocenter, incenter, center, circumcenter), 2, :fill)
+        label.(["orthocenter", "incenter", "center", "circumcenter"], :e, (orthocenter, incenter, center, circumcenter))
 
         # all centers lie on the same vetical line
         @test isapprox(orthocenter.x, incenter.x)
         @test isapprox(orthocenter.x, center.x)
         @test isapprox(orthocenter.x, circumcenter.x)
     end
 
+    @layer begin
+        translate(first(panes[3]))
+        # arbitrary
+        tri3 = ngon(O + (50, 50), 160, 4, π/3, vertices=true)[1:3]
+        prettypoly(tri3, :stroke, close=true)
+
+        orthocenter = triangleorthocenter(tri3...)
+        incenter = triangleincenter(tri3...)
+        center = trianglecenter(tri3...)
+        circumcenter = trianglecircumcenter(tri3...)
+        circle.((orthocenter, incenter, center, circumcenter), 2, :fill)
+        label.(("orthocenter", "incenter", "center", "circumcenter"), :N, (orthocenter + (0, 5), incenter +  (0, 15), center + (0, 20), circumcenter))
+        # some are inside, some are outside
+        @test isinside(incenter, tri3)
+        @test isinside(center, tri3)
+    end
+
     @test finish() == true
     println("...finished test: output in $(fname)")
 end