fix: circular texture was slightly off-center (#1012)

2019-09-14 07:12:23 +02:00 · 2019-09-14 07:12:23 +02:00 · 8c137a1caf
commit 8c137a1caf
parent c94b1cb99e
1 changed files with 1 additions and 1 deletions
--- a/pyqtgraph/opengl/items/GLScatterPlotItem.py
+++ b/pyqtgraph/opengl/items/GLScatterPlotItem.py
@ -61,7 +61,7 @@ class GLScatterPlotItem(GLGraphicsItem):
        ## Generate texture for rendering points
        w = 64
        def fn(x,y):
-            r = ((x-w/2.)**2 + (y-w/2.)**2) ** 0.5
+            r = ((x-(w-1)/2.)**2 + (y-(w-1)/2.)**2) ** 0.5
            return 255 * (w/2. - np.clip(r, w/2.-1.0, w/2.))
        pData = np.empty((w, w, 4))
        pData[:] = 255