Cycles: Improved robustness of hair motion blur.motion_curve_fix

In some instances, the number of control vertices of a hair could change mid-frame.
Cycles would then be unable to calculate proper motion blur for those hairs. This adds
interpolated CVs to fill in for the missing data. While this will not necessarily result in
a fully accurate reconstruction of the guide hair, it preserves motion blur instead of disabling it.

Reviewers: #cycles, sergey

Reviewed By: #cycles, sergey

Subscribers: sergey, brecht, #cycles

Tags: #cycles

Differential Revision: https://developer.blender.org/D3695

1 files changed, 8 insertions, 8 deletions

diff --git a/source/blender/editors/interface/interface_handlers.c b/source/blender/editors/interface/interface_handlers.c
index 06b6099cec7..64c3ae32eaa 100644
--- a/source/blender/editors/interface/interface_handlers.c
+++ b/source/blender/editors/interface/interface_handlers.c
@@ -160,7 +160,7 @@ typedef enum uiHandleButtonState {
 
 #ifdef USE_ALLSELECT
 
-/* Unfortunately theres no good way handle more generally:
+/* Unfortunately there's no good way handle more generally:
  * (propagate single clicks on layer buttons to other objects) */
 #define USE_ALLSELECT_LAYER_HACK
 
@@ -2529,7 +2529,7 @@ static void ui_but_copy_paste(bContext *C, uiBut *but, uiHandleButtonData *data,
  * It converts every UTF-8 character to an asterisk, and also remaps
  * the cursor position and selection start/end.
  *
- * \note: remaping is used, because password could contain UTF-8 characters.
+ * \note: remapping is used, because password could contain UTF-8 characters.
  *
  */
 
@@ -2793,7 +2793,7 @@ static bool ui_textedit_insert_buf(
 
 		if ((len + step >= data->maxlen) && (data->maxlen - (len + 1) > 0)) {
 			if (ui_but_is_utf8(but)) {
-				/* shorten 'step' to a utf8 algined size that fits  */
+				/* shorten 'step' to a utf8 aligned size that fits  */
 				BLI_strnlen_utf8_ex(buf, data->maxlen - (len + 1), &step);
 			}
 			else {
@@ -3859,7 +3859,7 @@ static int ui_do_but_HOTKEYEVT(
 		if (event->type == LEFTMOUSE && event->val == KM_PRESS) {
 			/* only cancel if click outside the button */
 			if (ui_but_contains_point_px(but->active->region, but, event->x, event->y) == 0) {
-				/* data->cancel doesnt work, this button opens immediate */
+				/* data->cancel doesn't work, this button opens immediate */
 				if (but->flag & UI_BUT_IMMEDIATE)
 					ui_but_value_set(but, 0);
 				else
@@ -4444,7 +4444,7 @@ static int ui_do_but_NUM(
 		else if (event->type == LEFTMOUSE && event->val == KM_RELEASE) {
 			if (data->dragchange) {
 #ifdef USE_DRAG_MULTINUM
-				/* if we started multibutton but didnt drag, then edit */
+				/* if we started multibutton but didn't drag, then edit */
 				if (data->multi_data.init == BUTTON_MULTI_INIT_SETUP) {
 					click = 1;
 				}
@@ -4755,7 +4755,7 @@ static int ui_do_but_SLI(
 		else if (event->type == LEFTMOUSE && event->val == KM_RELEASE) {
 			if (data->dragchange) {
 #ifdef USE_DRAG_MULTINUM
-				/* if we started multibutton but didnt drag, then edit */
+				/* if we started multibutton but didn't drag, then edit */
 				if (data->multi_data.init == BUTTON_MULTI_INIT_SETUP) {
 					click = 1;
 				}
@@ -8327,7 +8327,7 @@ static void ui_handle_button_return_submenu(bContext *C, const wmEvent *event, u
 /* ************************* menu handling *******************************/
 
 /**
- * Function used to prevent loosing the open menu when using nested pulldowns,
+ * Function used to prevent losing the open menu when using nested pulldowns,
  * when moving mouse towards the pulldown menu over other buttons that could
  * steal the highlight from the current button, only checks:
  *
@@ -8547,7 +8547,7 @@ static int ui_menu_scroll(ARegion *ar, uiBlock *block, int my, uiBut *to_bt)
  * let the parent menu get the event.
  *
  * This allows a menu to be open,
- * but send key events to the parent if theres no active buttons.
+ * but send key events to the parent if there's no active buttons.
  *
  * Without this keyboard navigation from menu's wont work.
  */