Bug fixing the mask modifier and border modifier in the rendering engine.

This is not backward compatible.

1 files changed, 11 insertions, 6 deletions

diff --git a/ep_modifier_mask.py b/ep_modifier_mask.py
index 732a5a7..75db6e4 100644
--- a/ep_modifier_mask.py
+++ b/ep_modifier_mask.py
@@ -106,23 +106,28 @@ class MaskModifier(model_allele.Allele):
         pre: height > 0
         pre: width == height
         """
-        # paint one layer masked by an linear gradient
+        # paint masked by an linear gradient
         ctx.save()
+        ka_debug.matrix_s(ctx.get_matrix())
 
         delta_x = self.direction.offset * math.cos(self.direction.radian)
         delta_y = self.direction.offset * math.sin(self.direction.radian)
-        linear = cairo.LinearGradient(self.center.x_pos + delta_x,
-                                      self.center.y_pos + delta_y,
-                                      self.center.x_pos - delta_x,
-                                      self.center.y_pos - delta_y)
+        linear = cairo.LinearGradient(self.center.x_pos + delta_x - 0.5,
+                                      self.center.y_pos + delta_y - 0.5,
+                                      self.center.x_pos - delta_x - 0.5,
+                                      self.center.y_pos - delta_y - 0.5)
         linear.add_color_stop_rgba(1.0, 1.0, 1.0, 1.0, self.alpha1)
         linear.add_color_stop_rgba(0.0, 0.0, 0.0, 0.0, self.alpha2)
-        ctx.mask(linear)
+#        ctx.mask(linear)
      
         ctx.save()
+        ka_debug.matrix_s(ctx.get_matrix())
         single_layer.render(task, ctx, width, height)
+        ka_debug.matrix_r(ctx.get_matrix())
         ctx.restore()
+        ctx.mask(linear)
         single_treenode.render(task, ctx, width, height)
+        ka_debug.matrix_r(ctx.get_matrix())
         ctx.restore()
 
     def explain(self, task, formater, single_layer, single_treenode):