Lerking/Phoenix
1
0
Fork 0
mirror of https://github.com/wxWidgets/Phoenix.git synced 2026-01-11 14:27:09 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Simplify theta calculation in ogl.LineShape.DrawArrow()

Browse Source
This commit is contained in:
Jakub Wilk
2018-02-18 21:00:40 +01:00
parent 929269e606
commit 013a69d856
1 changed files with 1 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
wx/lib/ogl/lines.py
View File

@@ -923,26 +923,12 @@ class LineShape(Shape):
# | /(x1, y1)
# |______________________
#
theta = 0.0
x1 = startPositionX
y1 = startPositionY
x2 = float(positionOnLineX)
y2 = float(positionOnLineY)
if x1 == x2 and y1 == y2:
theta = 0.0
elif x1 == x2 and y1 > y2:
theta = 3.0 * math.pi / 2.0
elif x1 == x2 and y2 > y1:
theta = math.pi / 2.0
elif x2 > x1 and y2 >= y1:
theta = math.atan((y2 - y1) / (x2 - x1))
elif x2 < x1:
theta = math.pi + math.atan((y2 - y1) / (x2 - x1))
elif x2 > x1 and y2 < y1:
theta = 2 * math.pi + math.atan((y2 - y1) / (x2 - x1))
else:
raise "Unknown arrowhead rotation case"
theta = math.atan2(y2 - y1, x2 - x1) % (2 * math.pi)
# Rotate about the centre of the object, then place
# the object on the line.