Curve: CurveMapping Extend Option

Extend options are currently stored per curve. This was not clearly
communicated to the user and they expected this to be a setting per
CurveMapping.

This change will move the option from `Curve` to `CurveMapping`. In
order to support this the API had to be changed.

BPY: CurveMap.evaluate is also moved to CurveMapping.evaluate what
breaks Python API. Cycles has been updated but other add-ons have
not. After release of 2.81 we can merge this to master and adapt
the add-ons.

Reviewed By: campbellbarton

Differential Revision: https://developer.blender.org/D6169

1 files changed, 6 insertions, 5 deletions

diff --git a/intern/cycles/blender/blender_util.h b/intern/cycles/blender/blender_util.h
index 3625dd45ae2..cbe61e367fa 100644
--- a/intern/cycles/blender/blender_util.h
+++ b/intern/cycles/blender/blender_util.h
@@ -159,7 +159,7 @@ static inline void curvemapping_to_array(BL::CurveMapping &cumap, array<float> &
   data.resize(size);
   for (int i = 0; i < size; i++) {
     float t = (float)i / (float)(size - 1);
-    data[i] = curve.evaluate(t);
+    data[i] = cumap.evaluate(curve, t);
   }
 }
 
@@ -197,15 +197,16 @@ static inline void curvemapping_color_to_array(BL::CurveMapping &cumap,
     BL::CurveMap mapI = cumap.curves[3];
     for (int i = 0; i < size; i++) {
       const float t = min_x + (float)i / (float)(size - 1) * range_x;
-      data[i] = make_float3(mapR.evaluate(mapI.evaluate(t)),
-                            mapG.evaluate(mapI.evaluate(t)),
-                            mapB.evaluate(mapI.evaluate(t)));
+      data[i] = make_float3(cumap.evaluate(mapR, cumap.evaluate(mapI, t)),
+                            cumap.evaluate(mapG, cumap.evaluate(mapI, t)),
+                            cumap.evaluate(mapB, cumap.evaluate(mapI, t)));
     }
   }
   else {
     for (int i = 0; i < size; i++) {
       float t = min_x + (float)i / (float)(size - 1) * range_x;
-      data[i] = make_float3(mapR.evaluate(t), mapG.evaluate(t), mapB.evaluate(t));
+      data[i] = make_float3(
+          cumap.evaluate(mapR, t), cumap.evaluate(mapG, t), cumap.evaluate(mapB, t));
     }
   }
 }