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== Clamp-To Constraint (was Patch #4818) ==

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This (new) constraint limits the location of an object/bone to the range of locations
on a given curve. It works by comparing the location of the owner on one axis, to
the extents of the curve's bounding-box on the same axis, to find the location on
the curve.

Usage Notes:
* 'Ob:' field must point to a valid curve object
* This curve should have 'Path' turned on in order for this constraint to work. You
don't really need to do this as it will be taken care of by the code.
* 'Auto' toggle automically determines which axis should be used for the distance estimations/calculations. It is the default option, but may not work that well for
some cases.
* X/Y/Z toggles can be used to select the axis to use for these calculations. Try
to choose the axis along which the curve stretches out for most.

Python Notes:
Python API access for this constraint is not included in this commit. Will be coming
soon.
This commit is contained in:
Joshua Leung
2007-04-07 03:32:57 +00:00
parent 999e405543
commit 655f9a61de
7 changed files with 227 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
source/blender/src/buttons_object.c
View File

@@ -371,6 +371,9 @@ void get_constraint_typestring (char *str, void *con_v)
case CONSTRAINT_TYPE_RIGIDBODYJOINT:
strcpy (str, "Rigid Body");
return;
case CONSTRAINT_TYPE_CLAMPTO:
strcpy (str, "Clamp To");
return;
default:
strcpy (str, "Unknown");
return;
@@ -1268,6 +1271,28 @@ static void draw_constraint (uiBlock *block, ListBase *list, bConstraint *con, s
}
}
break;
case CONSTRAINT_TYPE_CLAMPTO:
{
bClampToConstraint *data = con->data;
height = 66;
uiDefBut(block, ROUNDBOX, B_DIFF, "", *xco-10, *yco-height, width+40,height-1, NULL, 5.0, 0.0, 12, rb_col, "");
uiDefBut(block, LABEL, B_CONSTRAINT_TEST, "Target:", *xco+65, *yco-24, 50, 18, NULL, 0.0, 0.0, 0.0, 0.0, "");
/* Draw target parameters */
uiDefIDPoinBut(block, test_obpoin_but, ID_OB, B_CONSTRAINT_CHANGETARGET, "OB:", *xco+120, *yco-24, 135, 18, &data->tar, "Target Object");
/* Draw XYZ toggles */
uiBlockBeginAlign(block);
uiDefBut(block, LABEL, B_CONSTRAINT_TEST, "Main Axis:", *xco, *yco-64, 90, 18, NULL, 0.0, 0.0, 0.0, 0.0, "");
uiDefButI(block, ROW, B_CONSTRAINT_TEST, "Auto", *xco+100, *yco-64, 50, 18, &data->flag, 12.0, CLAMPTO_AUTO, 0, 0, "Automatically determine main-axis of movement");
uiDefButI(block, ROW, B_CONSTRAINT_TEST, "X", *xco+150, *yco-64, 32, 18, &data->flag, 12.0, CLAMPTO_X, 0, 0, "Main axis of movement is x-axis");
uiDefButI(block, ROW, B_CONSTRAINT_TEST, "Y", *xco+182, *yco-64, 32, 18, &data->flag, 12.0, CLAMPTO_Y, 0, 0, "Main axis of movement is y-axis");
uiDefButI(block, ROW, B_CONSTRAINT_TEST, "Z", *xco+214, *yco-64, 32, 18, &data->flag, 12.0, CLAMPTO_Z, 0, 0, "Main axis of movement is z-axis");
uiBlockEndAlign(block);
}
break;
case CONSTRAINT_TYPE_NULL:
{
height = 17;
@@ -1327,6 +1352,7 @@ static uiBlock *add_constraintmenu(void *arg_unused)
uiDefBut(block, BUTM, B_CONSTRAINT_ADD_MINMAX,"Floor", 0, yco-=20, 160, 19, NULL, 0.0, 0.0, 1, 0, "");
uiDefBut(block, BUTM, B_CONSTRAINT_ADD_LOCKTRACK,"Locked Track", 0, yco-=20, 160, 19, NULL, 0.0, 0.0, 1, 0, "");
uiDefBut(block, BUTM, B_CONSTRAINT_ADD_FOLLOWPATH,"Follow Path", 0, yco-=20, 160, 19, NULL, 0.0, 0.0, 1, 0, "");
uiDefBut(block, BUTM, B_CONSTRAINT_ADD_CLAMPTO,"Clamp To", 0, yco-=20, 160, 19, NULL, 0.0, 0.0, 1, 0, "");
uiDefBut(block, SEPR, 0, "", 0, yco-=6, 120, 6, NULL, 0.0, 0.0, 0, 0, "");
@@ -1515,6 +1541,15 @@ void do_constraintbuts(unsigned short event)
BIF_undo_push("Add constraint");
}
break;
case B_CONSTRAINT_ADD_CLAMPTO:
{
bConstraint *con;
con = add_new_constraint(CONSTRAINT_TYPE_CLAMPTO);
add_constraint_to_active(ob, con);
BIF_undo_push("Add constraint");
}
break;
default:
break;