Commit: 81d71c464a209cc8c999637b1fa8325223fd8242
Author: João Araújo
Date: Sun Jul 24 01:07:08 2016 +0100
Branches: gsoc2016-improved_extrusion
https://developer.blender.org/rB81d71c464a209cc8c999637b1fa8325223fd8242
Curves: Offset operator
Started the implementation of the offset operator.
Added interface options for both the Trim and the Offset operator.
===================================================================
M release/scripts/startup/bl_ui/space_view3d_toolbar.py
M source/blender/editors/curve/curve_intern.h
M source/blender/editors/curve/curve_ops.c
M source/blender/editors/curve/editcurve.c
===================================================================
diff --git a/release/scripts/startup/bl_ui/space_view3d_toolbar.py
b/release/scripts/startup/bl_ui/space_view3d_toolbar.py
index f69cce5..d3df36a 100644
--- a/release/scripts/startup/bl_ui/space_view3d_toolbar.py
+++ b/release/scripts/startup/bl_ui/space_view3d_toolbar.py
@@ -538,6 +538,8 @@ class VIEW3D_PT_tools_curveedit(View3DPanel, Panel):
col.operator("curve.smooth")
col.operator("transform.vertex_random")
col.operator("curve.extend_curve")
+ col.operator("curve.trim_curve")
+ col.operator("curve.offset_curve")
class VIEW3D_PT_tools_add_curve_edit(View3DPanel, Panel):
diff --git a/source/blender/editors/curve/curve_intern.h
b/source/blender/editors/curve/curve_intern.h
index 882af34..8a65b63 100644
--- a/source/blender/editors/curve/curve_intern.h
+++ b/source/blender/editors/curve/curve_intern.h
@@ -130,6 +130,7 @@ void CURVE_OT_match_texture_space(struct wmOperatorType
*ot);
void CURVE_OT_extend_curve(struct wmOperatorType *ot);
void CURVE_OT_trim_curve(struct wmOperatorType *ot);
+void CURVE_OT_offset_curve(struct wmOperatorType *ot);
bool ED_curve_pick_vert(
struct ViewContext *vc, short sel, const int mval[2],
diff --git a/source/blender/editors/curve/curve_ops.c
b/source/blender/editors/curve/curve_ops.c
index e3b2096..8c04dc7 100644
--- a/source/blender/editors/curve/curve_ops.c
+++ b/source/blender/editors/curve/curve_ops.c
@@ -141,6 +141,7 @@ void ED_operatortypes_curve(void)
WM_operatortype_append(CURVE_OT_cyclic_toggle);
WM_operatortype_append(CURVE_OT_extend_curve);
WM_operatortype_append(CURVE_OT_trim_curve);
+ WM_operatortype_append(CURVE_OT_offset_curve);
WM_operatortype_append(CURVE_OT_match_texture_space);
}
diff --git a/source/blender/editors/curve/editcurve.c
b/source/blender/editors/curve/editcurve.c
index 129e938..5bd8010 100644
--- a/source/blender/editors/curve/editcurve.c
+++ b/source/blender/editors/curve/editcurve.c
@@ -7051,6 +7051,10 @@ static int trim_curve_exec(bContext *C, wmOperator *op)
get_selected_splines(&selected_splines, nubase, &n_sel_splines, true);
/* it only makes sense for one spline to be selected */
+ if (n_sel_splines == 0) {
+ BKE_report(op->reports, RPT_ERROR, "One spline must be
selected");
+ return OPERATOR_CANCELLED;
+ }
if (n_sel_splines != 1) {
BKE_report(op->reports, RPT_ERROR, "Only one spline may be
selected at once");
return OPERATOR_CANCELLED;
@@ -7070,6 +7074,11 @@ static int trim_curve_exec(bContext *C, wmOperator *op)
}
int point_id = sel_point_id(nu);
+ if (point_id == -1)
+ {
+ BKE_report(op->reports, RPT_ERROR, "Something went terribly
wrong! Report this bug and assign it to genio84");
+ return OPERATOR_CANCELLED;
+ }
ListBase *low = (ListBase *)MEM_callocN(sizeof(ListBase),
"trim_exec1");;
ListBase *high = (ListBase *)MEM_callocN(sizeof(ListBase),
"trim_exec2");;
XShape *xshape;
@@ -7364,3 +7373,133 @@ void CURVE_OT_trim_curve(wmOperatorType *ot)
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
+
+/******************** Offset curve operator ********************/
+
+static void get_offset_vecs(BezTriple *bezt1, BezTriple *bezt2, float *r_v1,
float *r_v2)
+{
+ int i = 0, dims = 3;
+ float *coord_array, *vx, *vy, *helper;
+ coord_array = MEM_callocN(dims * (12 + 1) * sizeof(float),
"get_offset_vecs1");
+ vx = MEM_callocN(dims * sizeof(float), "get_offset_vecs2");
+ vy = MEM_callocN(dims * sizeof(float), "get_offset_vecs3");
+ helper = MEM_callocN(dims * sizeof(float), "get_offset_vecs4");
+ for (int j = 0; j < dims; j++)
+ {
+ BKE_curve_forward_diff_bezier(bezt1->vec[1][j],
+
bezt1->vec[2][j],
+
bezt2->vec[0][j],
+
bezt2->vec[1][j],
+
coord_array + j, 12, sizeof(float) * dims);
+ }
+
+ sub_v3_v3v3(vx, coord_array + 3, coord_array);
+ sub_v3_v3v3(vy, coord_array + 3 * 12, coord_array + 3 * 11);
+
+ float plane_a_co[3], plane_a_no[3], plane_b_co[3], plane_b_no[3];
+ float plane_a[4], plane_b[4];
+ float isect_co[3];
+ float isect_no[3];
+ sub_v3_v3v3(helper, bezt1->vec[2], bezt1->vec[1]);
+ cross_v3_v3v3(plane_b_no, helper, vx);
+ plane_from_point_normal_v3(plane_a, bezt1->vec[1], vx);
+ plane_from_point_normal_v3(plane_b, bezt1->vec[1], plane_b_no);
+
+ if (isect_plane_plane_v3(plane_a, plane_b,
+ isect_co, isect_no))
+ {
+ normalize_v3(isect_no);
+ copy_v3_v3(r_v1, isect_no);
+ }
+
+ sub_v3_v3v3(helper, bezt2->vec[1], bezt2->vec[0]);
+ cross_v3_v3v3(plane_b_no, vy, helper);
+ mul_v3_fl(plane_b_no, -1);
+ plane_from_point_normal_v3(plane_a, bezt2->vec[1], vy);
+ plane_from_point_normal_v3(plane_b, bezt2->vec[1], plane_b_no);
+
+ if (isect_plane_plane_v3(plane_a, plane_b,
+ isect_co, isect_no))
+ {
+ normalize_v3(isect_no);
+ copy_v3_v3(r_v2, isect_no);
+ }
+
+ MEM_freeN(coord_array);
+ MEM_freeN(vx);
+ MEM_freeN(vy);
+ MEM_freeN(helper);
+}
+
+/*def get_offset_vecs(bezt1, bezt2):
+ bezier = interpolate_bezier(bezt1.co,
+ bezt1.handle_right,
+ bezt2.handle_left,
+ bezt2.co, 13)
+ vx = bezier[1] - bezier[0]
+ vy = bezier[-1] - bezier[-2]
+
+ v1 = intersect_plane_plane(bezt1.co,
+ vx,
+ bezt1.co,
+ (bezt1.handle_right - bezt1.co).cross(vx))
+ v2 = intersect_plane_plane(bezt2.co,
+ vy,
+ bezt2.co,
+ -(bezt2.handle_left - bezt2.co).cross(vy))
+
+ return v1, v2*/
+
+static int offset_curve_exec(bContext *C, wmOperator *op)
+{
+ Object *obedit = CTX_data_edit_object(C);
+ ListBase *nubase = object_editcurve_get(obedit);
+ Nurb *nu, *new_nu;
+ BezTriple *bezt, *new_bezt;
+
+ /* get selected spline */
+ int spline_id = get_selected_spline_id(nubase);
+ nu = BLI_findlink(nubase, spline_id);
+ bezt = nu->bezt;
+ new_nu = BKE_nurb_duplicate(nu);
+ new_bezt = new_nu->bezt;
+
+ float *v1, *v2;
+ v1 = MEM_callocN(3 * sizeof(float), "offset_curve_exec1");
+ v2 = MEM_callocN(3 * sizeof(float), "offset_curve_exec2");
+ for (int i = 0; i < nu->pntsu - 1; i++)
+ {
+ add_v3_v3(new_bezt->vec[1], v2);
+ add_v3_v3(new_bezt->vec[2], v2);
+ get_offset_vecs(bezt, bezt + 1, v1, v2);
+ add_v3_v3(new_bezt->vec[1], v1);
+ add_v3_v3(new_bezt->vec[2], v1);
+ bezt++;
+ new_bezt++;
+ }
+ MEM_freeN(v1);
+ MEM_freeN(v2);
+
+ BLI_addtail(nubase, new_nu);
+
+ WM_event_add_notifier(C, NC_GEOM | ND_DATA, obedit->data);
+ DAG_id_tag_update(obedit->data, 0);
+
+ return OPERATOR_FINISHED;
+}
+
+void CURVE_OT_offset_curve(wmOperatorType *ot)
+{
+
+ /* identifiers */
+ ot->name = "Offset";
+ ot->description = "Offset selected spline";
+ ot->idname = "CURVE_OT_offset_curve";
+
+ /* api callbacks */
+ ot->exec = offset_curve_exec;
+ ot->poll = ED_operator_editsurfcurve;
+
+ /* flags */
+ ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
+}
\ No newline at end of file
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