From a12ec8be66e36b2ff0d939b6fa2019813fc9b87e Mon Sep 17 00:00:00 2001
From: Paul McCarthy <pauld.mccarthy@gmail.com>
Date: Thu, 17 Apr 2014 10:53:42 +0100
Subject: [PATCH] Transparency works
---
fsl/utils/slicecanvas.py | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/fsl/utils/slicecanvas.py b/fsl/utils/slicecanvas.py
index a7f5e98cb..f8ff10a45 100644
--- a/fsl/utils/slicecanvas.py
+++ b/fsl/utils/slicecanvas.py
@@ -249,6 +249,14 @@ class SliceCanvas(wxgl.GLCanvas):
self.Bind(wx.EVT_PAINT, self.draw)
+ def alphaChanged(newAlpha, *a):
+ self.Refresh()
+
+ self.image.addListener(
+ 'alpha',
+ 'SliceCanvasAlpha_{}'.format(id(self)),
+ alphaChanged)
+
def _initGLData(self):
"""
@@ -415,6 +423,10 @@ class SliceCanvas(wxgl.GLCanvas):
gl.glUseProgram(self.shaders)
+ # enable transparency
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
+
# Set up the colour buffer
gl.glEnable(gl.GL_TEXTURE_1D)
gl.glActiveTexture(gl.GL_TEXTURE0)
--
GitLab