1 files changed, 46 insertions, 0 deletions

diff --git a/intern/cycles/render/object.cpp b/intern/cycles/render/object.cpp
index 5df8e8c1368..a89f8afd251 100644
--- a/intern/cycles/render/object.cpp
+++ b/intern/cycles/render/object.cpp
@@ -19,6 +19,7 @@
 #include "device.h"
 #include "light.h"
 #include "mesh.h"
+#include "curves.h"
 #include "object.h"
 #include "scene.h"
 
@@ -45,6 +46,7 @@ Object::Object()
 	motion.post = transform_identity();
 	use_motion = false;
 	use_holdout = false;
+	curverender = false;
 }
 
 Object::~Object()
@@ -86,6 +88,10 @@ void Object::apply_transform()
 	for(size_t i = 0; i < mesh->verts.size(); i++)
 		mesh->verts[i] = transform_point(&tfm, mesh->verts[i]);
 
+	for(size_t i = 0; i < mesh->curve_keys.size(); i++)
+		mesh->curve_keys[i].co = transform_point(&tfm, mesh->curve_keys[i].co);
+
+	Attribute *attr_tangent = mesh->curve_attributes.find(ATTR_STD_CURVE_TANGENT);
 	Attribute *attr_fN = mesh->attributes.find(ATTR_STD_FACE_NORMAL);
 	Attribute *attr_vN = mesh->attributes.find(ATTR_STD_VERTEX_NORMAL);
 
@@ -110,6 +116,13 @@ void Object::apply_transform()
 			vN[i] = transform_direction(&ntfm, vN[i]);
 	}
 
+	if(attr_tangent) {
+		float3 *tangent = attr_tangent->data_float3();
+
+		for(size_t i = 0; i < mesh->curve_keys.size(); i++)
+			tangent[i] = transform_direction(&tfm, tangent[i]);
+	}
+
 	if(bounds.valid()) {
 		mesh->compute_bounds();
 		compute_bounds(false, 0.0f);
@@ -133,6 +146,7 @@ void Object::tag_update(Scene *scene)
 		}
 	}
 
+	scene->curve_system_manager->need_update = true;
 	scene->mesh_manager->need_update = true;
 	scene->object_manager->need_update = true;
 }
@@ -189,6 +203,20 @@ void ObjectManager::device_update_transforms(Device *device, DeviceScene *dscene
 					surface_area += triangle_area(p1, p2, p3);
 				}
 
+				foreach(Mesh::Curve& curve, mesh->curves) {
+					int first_key = curve.first_key;
+
+					for(int i = 0; i < curve.num_segments(); i++) {
+						float3 p1 = mesh->curve_keys[first_key + i].co;
+						float r1 = mesh->curve_keys[first_key + i].radius;
+						float3 p2 = mesh->curve_keys[first_key + i + 1].co;
+						float r2 = mesh->curve_keys[first_key + i + 1].radius;
+
+						/* currently ignores segment overlaps*/
+						surface_area += M_PI_F *(r1 + r2) * len(p1 - p2);
+					}
+				}
+
 				surface_area_map[mesh] = surface_area;
 			}
 			else
@@ -204,6 +232,23 @@ void ObjectManager::device_update_transforms(Device *device, DeviceScene *dscene
 
 				surface_area += triangle_area(p1, p2, p3);
 			}
+
+			foreach(Mesh::Curve& curve, mesh->curves) {
+				int first_key = curve.first_key;
+
+				for(int i = 0; i < curve.num_segments(); i++) {
+					float3 p1 = mesh->curve_keys[first_key + i].co;
+					float r1 = mesh->curve_keys[first_key + i].radius;
+					float3 p2 = mesh->curve_keys[first_key + i + 1].co;
+					float r2 = mesh->curve_keys[first_key + i + 1].radius;
+
+					p1 = transform_point(&tfm, p1);
+					p2 = transform_point(&tfm, p2);
+
+					/* currently ignores segment overlaps*/
+					surface_area += M_PI_F *(r1 + r2) * len(p1 - p2);
+				}
+			}
 		}
 
 		/* pack in texture */
@@ -355,6 +400,7 @@ void ObjectManager::apply_static_transforms(Scene *scene, uint *object_flag, Pro
 void ObjectManager::tag_update(Scene *scene)
 {
 	need_update = true;
+	scene->curve_system_manager->need_update = true;
 	scene->mesh_manager->need_update = true;
 	scene->light_manager->need_update = true;
 }