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//
-----------------------------------------------------------------------------
//
Implementation of the Group class, which represents a set of entities and
//
constraints that are solved together, in some cases followed by another
//
operation, like to extrude surfaces from the entities or to step and
//
repeat them parametrically.
//
//
Copyright 2008-2013 Jonathan Westhues.
//
-----------------------------------------------------------------------------
#
include
"
solvespace.h
"
const
hParam Param::
NO_PARAM
= {
0
};
#
define
NO_PARAM
(Param::
NO_PARAM
)
const
hGroup Group::
HGROUP_REFERENCES
= {
1
};
//
-----------------------------------------------------------------------------
//
The group structure includes pointers to other dynamically-allocated
//
memory. This clears and frees them all.
//
-----------------------------------------------------------------------------
void
Group::Clear
() {
polyLoops.
Clear
();
bezierLoops.
Clear
();
bezierOpens.
Clear
();
thisMesh.
Clear
();
runningMesh.
Clear
();
thisShell.
Clear
();
runningShell.
Clear
();
displayMesh.
Clear
();
displayOutlines.
Clear
();
impMesh.
Clear
();
impShell.
Clear
();
impEntity.
Clear
();
//
remap is the only one that doesn't get recreated when we regen
remap.
clear
();
}
void
Group::AddParam
(IdList<Param,hParam> *param, hParam hp,
double
v) {
Param pa = {};
pa.
h
= hp;
pa.
val
= v;
param->
Add
(&pa);
}
bool
Group::IsVisible
() {
if
(!visible)
return
false
;
Group *active =
SK
.
GetGroup
(
SS
.
GW
.
activeGroup
);
if
(order > active->
order
)
return
false
;
return
true
;
}
size_t
Group::GetNumConstraints
() {
return
std::count_if
(
SK
.
constraint
.
begin
(),
SK
.
constraint
.
end
(),
[&](Constraint
const
&c) {
return
c.
group
== h; });
}
Vector
Group::ExtrusionGetVector
() {
return
Vector::From
(h.
param
(
0
), h.
param
(
1
), h.
param
(
2
));
}
void
Group::ExtrusionForceVectorTo
(
const
Vector &v) {
SK
.
GetParam
(h.
param
(
0
))->
val
= v.
x
;
SK
.
GetParam
(h.
param
(
1
))->
val
= v.
y
;
SK
.
GetParam
(h.
param
(
2
))->
val
= v.
z
;
}
void
Group::MenuGroup
(Command id) {
MenuGroup
(id,
Platform::Path
());
}
void
Group::MenuGroup
(Command id, Platform::Path linkFile) {
Platform::SettingsRef settings =
Platform::GetSettings
();
Group g = {};
g.
visible
=
true
;
g.
color
=
RGBi
(
100
,
100
,
100
);
g.
scale
=
1
;
g.
linkFile
= linkFile;
SS
.
GW
.
GroupSelection
();
auto
const
&gs =
SS
.
GW
.
gs
;
switch
(id) {
case
Command::
GROUP_3D
:
g.
type
= Type::
DRAWING_3D
;
g.
name
=
C_
(
"
group-name
"
,
"
sketch-in-3d
"
);
break
;
case
Command::
GROUP_WRKPL
:
g.
type
= Type::
DRAWING_WORKPLANE
;
g.
name
=
C_
(
"
group-name
"
,
"
sketch-in-plane
"
);
if
(gs.
points
==
1
&& gs.
n
==
1
) {
g.
subtype
= Subtype::
WORKPLANE_BY_POINT_ORTHO
;
Vector u =
SS
.
GW
.
projRight
, v =
SS
.
GW
.
projUp
;
u = u.
ClosestOrtho
();
v = v.
Minus
(u.
ScaledBy
(v.
Dot
(u)));
v = v.
ClosestOrtho
();
g.
predef
.
q
=
Quaternion::From
(u, v);
g.
predef
.
origin
= gs.
point
[
0
];
}
else
if
(gs.
points
==
1
&& gs.
lineSegments
==
2
&& gs.
n
==
3
) {
g.
subtype
= Subtype::
WORKPLANE_BY_LINE_SEGMENTS
;
g.
predef
.
origin
= gs.
point
[
0
];
g.
predef
.
entityB
= gs.
entity
[
0
];
g.
predef
.
entityC
= gs.
entity
[
1
];
Vector ut =
SK
.
GetEntity
(g.
predef
.
entityB
)->
VectorGetNum
();
Vector vt =
SK
.
GetEntity
(g.
predef
.
entityC
)->
VectorGetNum
();
ut = ut.
WithMagnitude
(
1
);
vt = vt.
WithMagnitude
(
1
);
if
(
fabs
(
SS
.
GW
.
projUp
.
Dot
(vt)) <
fabs
(
SS
.
GW
.
projUp
.
Dot
(ut))) {
swap
(ut, vt);
g.
predef
.
swapUV
=
true
;
}
if
(
SS
.
GW
.
projRight
.
Dot
(ut) <
0
) g.
predef
.
negateU
=
true
;
if
(
SS
.
GW
.
projUp
.
Dot
(vt) <
0
) g.
predef
.
negateV
=
true
;
}
else
if
(gs.
workplanes
==
1
&& gs.
n
==
1
) {
if
(gs.
entity
[
0
].
isFromRequest
()) {
Entity *wrkpl =
SK
.
GetEntity
(gs.
entity
[
0
]);
Entity *normal =
SK
.
GetEntity
(wrkpl->
normal
);
g.
subtype
= Subtype::
WORKPLANE_BY_POINT_ORTHO
;
g.
predef
.
origin
= wrkpl->
point
[
0
];
g.
predef
.
q
= normal->
NormalGetNum
();
}
else
{
Group *wrkplg =
SK
.
GetGroup
(gs.
entity
[
0
].
group
());
g.
subtype
= wrkplg->
subtype
;
g.
predef
.
origin
= wrkplg->
predef
.
origin
;
if
(wrkplg->
subtype
== Subtype::
WORKPLANE_BY_LINE_SEGMENTS
) {
g.
predef
.
entityB
= wrkplg->
predef
.
entityB
;
g.
predef
.
entityC
= wrkplg->
predef
.
entityC
;
g.
predef
.
swapUV
= wrkplg->
predef
.
swapUV
;
g.
predef
.
negateU
= wrkplg->
predef
.
negateU
;
g.
predef
.
negateV
= wrkplg->
predef
.
negateV
;
}
else
if
(wrkplg->
subtype
== Subtype::
WORKPLANE_BY_POINT_ORTHO
) {
g.
predef
.
q
= wrkplg->
predef
.
q
;
}
else
ssassert
(
false
,
"
Unexpected workplane subtype
"
);
}
}
else
{
Error
(
_
(
"
Bad selection for new sketch in workplane. This
"
"
group can be created with:
\n\n
"
"
* a point (through the point, orthogonal to coordinate axes)
\n
"
"
* a point and two line segments (through the point,
"
"
parallel to the lines)
\n
"
"
* a workplane (copy of the workplane)
\n
"
));
return
;
}
break
;
case
Command::
GROUP_EXTRUDE
:
if
(!
SS
.
GW
.
LockedInWorkplane
()) {
Error
(
_
(
"
Activate a workplane (Sketch -> In Workplane) before
"
"
extruding. The sketch will be extruded normal to the
"
"
workplane.
"
));
return
;
}
g.
type
= Type::
EXTRUDE
;
g.
opA
=
SS
.
GW
.
activeGroup
;
g.
predef
.
entityB
=
SS
.
GW
.
ActiveWorkplane
();
g.
subtype
= Subtype::
ONE_SIDED
;
g.
name
=
C_
(
"
group-name
"
,
"
extrude
"
);
break
;
case
Command::
GROUP_LATHE
:
if
(!
SS
.
GW
.
LockedInWorkplane
()) {
Error
(
_
(
"
Lathe operation can only be applied to planar sketches.
"
));
return
;
}
if
(gs.
points
==
1
&& gs.
vectors
==
1
&& gs.
n
==
2
) {
g.
predef
.
origin
= gs.
point
[
0
];
g.
predef
.
entityB
= gs.
vector
[
0
];
}
else
if
(gs.
lineSegments
==
1
&& gs.
n
==
1
) {
g.
predef
.
origin
=
SK
.
GetEntity
(gs.
entity
[
0
])->
point
[
0
];
g.
predef
.
entityB
= gs.
entity
[
0
];
//
since a line segment is a vector
}
else
{
Error
(
_
(
"
Bad selection for new lathe group. This group can
"
"
be created with:
\n\n
"
"
* a point and a line segment or normal
"
"
(revolved about an axis parallel to line /
"
"
normal, through point)
\n
"
"
* a line segment (revolved about line segment)
\n
"
));
return
;
}
g.
type
= Type::
LATHE
;
g.
opA
=
SS
.
GW
.
activeGroup
;
g.
name
=
C_
(
"
group-name
"
,
"
lathe
"
);
break
;
case
Command::
GROUP_REVOLVE
:
if
(!
SS
.
GW
.
LockedInWorkplane
()) {
Error
(
_
(
"
Revolve operation can only be applied to planar sketches.
"
));
return
;
}
if
(gs.
points
==
1
&& gs.
vectors
==
1
&& gs.
n
==
2
) {
g.
predef
.
origin
= gs.
point
[
0
];
g.
predef
.
entityB
= gs.
vector
[
0
];
}
else
if
(gs.
lineSegments
==
1
&& gs.
n
==
1
) {
g.
predef
.
origin
=
SK
.
GetEntity
(gs.
entity
[
0
])->
point
[
0
];
g.
predef
.
entityB
= gs.
entity
[
0
];
//
since a line segment is a vector
}
else
{
Error
(
_
(
"
Bad selection for new revolve group. This group can
"
"
be created with:
\n\n
"
"
* a point and a line segment or normal
"
"
(revolved about an axis parallel to line /
"
"
normal, through point)
\n
"
"
* a line segment (revolved about line segment)
\n
"
));
return
;
}
g.
type
= Type::
REVOLVE
;
g.
opA
=
SS
.
GW
.
activeGroup
;
g.
valA
=
2
;
g.
subtype
= Subtype::
ONE_SIDED
;
g.
name
=
C_
(
"
group-name
"
,
"
revolve
"
);
break
;
case
Command::
GROUP_HELIX
:
if
(!
SS
.
GW
.
LockedInWorkplane
()) {
Error
(
_
(
"
Helix operation can only be applied to planar sketches.
"
));
return
;
}
if
(gs.
points
==
1
&& gs.
vectors
==
1
&& gs.
n
==
2
) {
g.
predef
.
origin
= gs.
point
[
0
];
g.
predef
.
entityB
= gs.
vector
[
0
];
}
else
if
(gs.
lineSegments
==
1
&& gs.
n
==
1
) {
g.
predef
.
origin
=
SK
.
GetEntity
(gs.
entity
[
0
])->
point
[
0
];
g.
predef
.
entityB
= gs.
entity
[
0
];
//
since a line segment is a vector
}
else
{
Error
(
_
(
"
Bad selection for new helix group. This group can
"
"
be created with:
\n\n
"
"
* a point and a line segment or normal
"
"
(revolved about an axis parallel to line /
"
"
normal, through point)
\n
"
"
* a line segment (revolved about line segment)
\n
"
));
return
;
}
g.
type
= Type::
HELIX
;
g.
opA
=
SS
.
GW
.
activeGroup
;
g.
valA
=
2
;
g.
subtype
= Subtype::
ONE_SIDED
;
g.
name
=
C_
(
"
group-name
"
,
"
helix
"
);
break
;
case
Command::
GROUP_ROT
: {
if
(gs.
points
==
1
&& gs.
n
==
1
&&
SS
.
GW
.
LockedInWorkplane
()) {
g.
predef
.
origin
= gs.
point
[
0
];
Entity *w =
SK
.
GetEntity
(
SS
.
GW
.
ActiveWorkplane
());
g.
predef
.
entityB
= w->
Normal
()->
h
;
g.
activeWorkplane
= w->
h
;
}
else
if
(gs.
points
==
1
&& gs.
vectors
==
1
&& gs.
n
==
2
) {
g.
predef
.
origin
= gs.
point
[
0
];
g.
predef
.
entityB
= gs.
vector
[
0
];
}
else
{
Error
(
_
(
"
Bad selection for new rotation. This group can
"
"
be created with:
\n\n
"
"
* a point, while locked in workplane (rotate
"
"
in plane, about that point)
\n
"
"
* a point and a line or a normal (rotate about
"
"
an axis through the point, and parallel to
"
"
line / normal)
\n
"
));
return
;
}
g.
type
= Type::
ROTATE
;
g.
opA
=
SS
.
GW
.
activeGroup
;
g.
valA
=
3
;
g.
subtype
= Subtype::
ONE_SIDED
;
g.
name
=
C_
(
"
group-name
"
,
"
rotate
"
);
break
;
}
case
Command::
GROUP_TRANS
:
g.
type
= Type::
TRANSLATE
;
g.
opA
=
SS
.
GW
.
activeGroup
;
g.
valA
=
3
;
g.
subtype
= Subtype::
ONE_SIDED
;
g.
predef
.
entityB
=
SS
.
GW
.
ActiveWorkplane
();
g.
activeWorkplane
=
SS
.
GW
.
ActiveWorkplane
();
g.
name
=
C_
(
"
group-name
"
,
"
translate
"
);
break
;
case
Command::
GROUP_LINK
: {
g.
type
= Type::
LINKED
;
g.
meshCombine
= CombineAs::
ASSEMBLE
;
if
(g.
linkFile
.
IsEmpty
()) {
Platform::FileDialogRef dialog =
Platform::CreateOpenFileDialog
(
SS
.
GW
.
window
);
dialog->
AddFilters
(Platform::SolveSpaceLinkFileFilters);
dialog->
ThawChoices
(settings,
"
LinkSketch
"
);
if
(!dialog->
RunModal
())
return
;
dialog->
FreezeChoices
(settings,
"
LinkSketch
"
);
g.
linkFile
= dialog->
GetFilename
();
}
//
Assign the default name of the group based on the name of
//
the linked file.
g.
name
= g.
linkFile
.
FileStem
();
for
(
size_t
i =
0
; i < g.
name
.
length
(); i++) {
if
(!(
isalnum
(g.
name
[i]) || (
unsigned
)g.
name
[i] >=
0x80
)) {
//
convert punctuation to dashes
g.
name
[i] =
'
-
'
;
}
}
break
;
}
default
:
ssassert
(
false
,
"
Unexpected menu ID
"
);
}
//
Copy color from the previous mesh-contributing group.
if
(g.
IsMeshGroup
() && !
SK
.
groupOrder
.
IsEmpty
()) {
Group *running =
SK
.
GetRunningMeshGroupFor
(
SS
.
GW
.
activeGroup
);
if
(running !=
NULL
) {
g.
color
= running->
color
;
}
}
SS
.
GW
.
ClearSelection
();
SS
.
UndoRemember
();
bool
afterActive =
false
;
for
(hGroup hg :
SK
.
groupOrder
) {
Group *gi =
SK
.
GetGroup
(hg);
if
(afterActive)
gi->
order
+=
1
;
if
(gi->
h
==
SS
.
GW
.
activeGroup
) {
g.
order
= gi->
order
+
1
;
afterActive =
true
;
}
}
SK
.
group
.
AddAndAssignId
(&g);
Group *gg =
SK
.
GetGroup
(g.
h
);
if
(gg->
type
== Type::
LINKED
) {
SS
.
ReloadAllLinked
(
SS
.
saveFile
);
}
gg->
clean
=
false
;
SS
.
GW
.
activeGroup
= gg->
h
;
SS
.
GenerateAll
();
if
(gg->
type
== Type::
DRAWING_WORKPLANE
) {
//
Can't set the active workplane for this one until after we've
//
regenerated, because the workplane doesn't exist until then.
gg->
activeWorkplane
= gg->
h
.
entity
(
0
);
}
gg->
Activate
();
TextWindow::ScreenSelectGroup
(
0
, gg->
h
.
v
);
SS
.
GW
.
AnimateOntoWorkplane
();
}
void
Group::TransformImportedBy
(Vector t, Quaternion q) {
ssassert
(type == Type::
LINKED
,
"
Expected a linked group
"
);
hParam tx, ty, tz, qw, qx, qy, qz;
tx = h.
param
(
0
);
ty = h.
param
(
1
);
tz = h.
param
(
2
);
qw = h.
param
(
3
);
qx = h.
param
(
4
);
qy = h.
param
(
5
);
qz = h.
param
(
6
);
Quaternion qg =
Quaternion::From
(qw, qx, qy, qz);
qg = q.
Times
(qg);
Vector tg =
Vector::From
(tx, ty, tz);
tg = tg.
Plus
(t);
SK
.
GetParam
(tx)->
val
= tg.
x
;
SK
.
GetParam
(ty)->
val
= tg.
y
;
SK
.
GetParam
(tz)->
val
= tg.
z
;
SK
.
GetParam
(qw)->
val
= qg.
w
;
SK
.
GetParam
(qx)->
val
= qg.
vx
;
SK
.
GetParam
(qy)->
val
= qg.
vy
;
SK
.
GetParam
(qz)->
val
= qg.
vz
;
}
bool
Group::IsForcedToMeshBySource
()
const
{
const
Group *srcg =
this
;
if
(type == Type::
TRANSLATE
|| type == Type::
ROTATE
) {
//
A step and repeat gets merged against the group's previous group,
//
not our own previous group.
srcg =
SK
.
GetGroup
(opA);
if
(srcg->
forceToMesh
)
return
true
;
}
Group *g = srcg->
RunningMeshGroup
();
if
(g ==
NULL
)
return
false
;
return
g->
forceToMesh
|| g->
IsForcedToMeshBySource
();
}
bool
Group::IsForcedToMesh
()
const
{
return
forceToMesh ||
IsForcedToMeshBySource
();
}
std::string
Group::DescriptionString
() {
if
(name.
empty
()) {
return
ssprintf
(
"
g%03x-%s
"
, h.
v
,
_
(
"
(unnamed)
"
));
}
else
{
return
ssprintf
(
"
g%03x-%s
"
, h.
v
, name.
c_str
());
}
}
void
Group::Activate
() {
if
(type == Type::
EXTRUDE
|| type == Type::
LINKED
|| type == Type::
LATHE
||
type == Type::
REVOLVE
|| type == Type::
HELIX
|| type == Type::
TRANSLATE
|| type == Type::
ROTATE
) {
SS
.
GW
.
showFaces
=
true
;
}
else
{
SS
.
GW
.
showFaces
=
false
;
}
SS
.
MarkGroupDirty
(h);
//
for good measure; shouldn't be needed
SS
.
ScheduleShowTW
();
}
void
Group::Generate
(IdList<Entity,hEntity> *entity,
IdList<Param,hParam> *param)
{
Vector gn = (
SS
.
GW
.
projRight
).
Cross
(
SS
.
GW
.
projUp
);
Vector gp =
SS
.
GW
.
projRight
.
Plus
(
SS
.
GW
.
projUp
);
Vector gc = (
SS
.
GW
.
offset
).
ScaledBy
(-
1
);
gn = gn.
WithMagnitude
(
200
/
SS
.
GW
.
scale
);
gp = gp.
WithMagnitude
(
200
/
SS
.
GW
.
scale
);
int
a, i;
switch
(type) {
case
Type::
DRAWING_3D
:
return
;
case
Type::
DRAWING_WORKPLANE
: {
Quaternion q;
if
(subtype == Subtype::
WORKPLANE_BY_LINE_SEGMENTS
) {
Vector u =
SK
.
GetEntity
(predef.
entityB
)->
VectorGetNum
();
Vector v =
SK
.
GetEntity
(predef.
entityC
)->
VectorGetNum
();
u = u.
WithMagnitude
(
1
);
Vector n = u.
Cross
(v);
v = (n.
Cross
(u)).
WithMagnitude
(
1
);
if
(predef.
swapUV
)
swap
(u, v);
if
(predef.
negateU
) u = u.
ScaledBy
(-
1
);
if
(predef.
negateV
) v = v.
ScaledBy
(-
1
);
q =
Quaternion::From
(u, v);
}
else
if
(subtype == Subtype::
WORKPLANE_BY_POINT_ORTHO
) {
//
Already given, numerically.
q = predef.
q
;
}
else
ssassert
(
false
,
"
Unexpected workplane subtype
"
);
Entity normal = {};
normal.
type
= Entity::Type::
NORMAL_N_COPY
;
normal.
numNormal
= q;
normal.
point
[
0
] = h.
entity
(
2
);
normal.
group
= h;
normal.
h
= h.
entity
(
1
);
entity->
Add
(&normal);
Entity point = {};
point.
type
= Entity::Type::
POINT_N_COPY
;
point.
numPoint
=
SK
.
GetEntity
(predef.
origin
)->
PointGetNum
();
point.
construction
=
true
;
point.
group
= h;
point.
h
= h.
entity
(
2
);
entity->
Add
(&point);
Entity wp = {};
wp.
type
= Entity::Type::
WORKPLANE
;
wp.
normal
= normal.
h
;
wp.
point
[
0
] = point.
h
;
wp.
group
= h;
wp.
h
= h.
entity
(
0
);
entity->
Add
(&wp);
return
;
}
case
Type::
EXTRUDE
: {
AddParam
(param, h.
param
(
0
), gn.
x
);
AddParam
(param, h.
param
(
1
), gn.
y
);
AddParam
(param, h.
param
(
2
), gn.
z
);
int
ai, af;
if
(subtype == Subtype::
ONE_SIDED
) {
ai =
0
; af =
2
;
}
else
if
(subtype == Subtype::
TWO_SIDED
) {
ai = -
1
; af =
1
;
}
else
ssassert
(
false
,
"
Unexpected extrusion subtype
"
);
//
Get some arbitrary point in the sketch, that will be used
//
as a reference when defining top and bottom faces.
hEntity pt = {
0
};
//
Not using range-for here because we're changing the size of entity in the loop.
for
(i =
0
; i < entity->
n
; i++) {
Entity *e = &(entity->
Get
(i));
if
(e->
group
!= opA)
continue
;
if
(e->
IsPoint
()) pt = e->
h
;
e->
CalculateNumerical
(
/*
forExport=
*/
false
);
hEntity he = e->
h
; e =
NULL
;
//
As soon as I call CopyEntity, e may become invalid! That
//
adds entities, which may cause a realloc.
CopyEntity
(entity,
SK
.
GetEntity
(he), ai,
REMAP_BOTTOM
,
h.
param
(
0
), h.
param
(
1
), h.
param
(
2
),
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
CopyAs::
N_TRANS
);
CopyEntity
(entity,
SK
.
GetEntity
(he), af,
REMAP_TOP
,
h.
param
(
0
), h.
param
(
1
), h.
param
(
2
),
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
CopyAs::
N_TRANS
);
MakeExtrusionLines
(entity, he);
}
//
Remapped versions of that arbitrary point will be used to
//
provide points on the plane faces.
MakeExtrusionTopBottomFaces
(entity, pt);
return
;
}
case
Type::
LATHE
: {
Vector axis_pos =
SK
.
GetEntity
(predef.
origin
)->
PointGetNum
();
Vector axis_dir =
SK
.
GetEntity
(predef.
entityB
)->
VectorGetNum
();
//
Not using range-for here because we're changing the size of entity in the loop.
for
(i =
0
; i < entity->
n
; i++) {
Entity *e = &(entity->
Get
(i));
if
(e->
group
!= opA)
continue
;
e->
CalculateNumerical
(
/*
forExport=
*/
false
);
hEntity he = e->
h
;
//
As soon as I call CopyEntity, e may become invalid! That
//
adds entities, which may cause a realloc.
//
this is the regular copy of all entities
CopyEntity
(entity,
SK
.
GetEntity
(he),
0
,
REMAP_LATHE_START
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
CopyAs::
NUMERIC
);
e = &(entity->
Get
(i));
//
because we copied.
if
(e->
IsPoint
()) {
//
for points this copy is used for the circle centers
CopyEntity
(entity,
SK
.
GetEntity
(he),
0
,
REMAP_LATHE_ARC_CENTER
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
CopyAs::
NUMERIC
);
MakeLatheCircles
(entity, param, he, axis_pos, axis_dir);
};
MakeLatheSurfacesSelectable
(entity, he, axis_dir);
}
return
;
}
case
Type::
REVOLVE
: {
//
this was borrowed from LATHE and ROTATE
Vector axis_pos =
SK
.
GetEntity
(predef.
origin
)->
PointGetNum
();
Vector axis_dir =
SK
.
GetEntity
(predef.
entityB
)->
VectorGetNum
();
//
The center of rotation
AddParam
(param, h.
param
(
0
), axis_pos.
x
);
AddParam
(param, h.
param
(
1
), axis_pos.
y
);
AddParam
(param, h.
param
(
2
), axis_pos.
z
);
//
The rotation quaternion
AddParam
(param, h.
param
(
3
),
30
*
PI
/
180
);
AddParam
(param, h.
param
(
4
), axis_dir.
x
);
AddParam
(param, h.
param
(
5
), axis_dir.
y
);
AddParam
(param, h.
param
(
6
), axis_dir.
z
);
//
Get some arbitrary point in the sketch, that will be used
//
as a reference when defining end faces.
hEntity pt = {
0
};
int
ai =
0
, af =
2
;
if
(subtype == Subtype::
TWO_SIDED
)
{
ai = -
1
;
af =
1
;
}
//
Not using range-for here because we're changing the size of entity in the loop.
for
(i =
0
; i < entity->
n
; i++) {
Entity *e = &(entity->
Get
(i));
if
(e->
group
!= opA)
continue
;
if
(e->
IsPoint
()) pt = e->
h
;
e->
CalculateNumerical
(
/*
forExport=
*/
false
);
hEntity he = e->
h
;
//
one copy for each end of the revolved surface
CopyEntity
(entity, e, ai,
REMAP_LATHE_START
, h.
param
(
0
),
h.
param
(
1
), h.
param
(
2
), h.
param
(
3
), h.
param
(
4
), h.
param
(
5
),
h.
param
(
6
),
NO_PARAM
, CopyAs::
N_ROT_AA
);
e = &(entity->
Get
(i));
//
because we copied.
CopyEntity
(entity, e, af,
REMAP_LATHE_END
, h.
param
(
0
),
h.
param
(
1
), h.
param
(
2
), h.
param
(
3
), h.
param
(
4
), h.
param
(
5
),
h.
param
(
6
),
NO_PARAM
, CopyAs::
N_ROT_AA
);
//
Arcs are not generated for revolve groups, for now, because our current arc
//
entity is not chiral, and dragging a revolve may break the arc by inverting it.
//
MakeLatheCircles(entity, param, he, axis_pos, axis_dir);
MakeLatheSurfacesSelectable
(entity, he, axis_dir);
}
MakeRevolveEndFaces
(entity, pt, ai, af);
return
;
}
case
Type::
HELIX
: {
Vector axis_pos =
SK
.
GetEntity
(predef.
origin
)->
PointGetNum
();
Vector axis_dir =
SK
.
GetEntity
(predef.
entityB
)->
VectorGetNum
();
//
The center of rotation
AddParam
(param, h.
param
(
0
), axis_pos.
x
);
AddParam
(param, h.
param
(
1
), axis_pos.
y
);
AddParam
(param, h.
param
(
2
), axis_pos.
z
);
//
The rotation quaternion
AddParam
(param, h.
param
(
3
),
30
*
PI
/
180
);
AddParam
(param, h.
param
(
4
), axis_dir.
x
);
AddParam
(param, h.
param
(
5
), axis_dir.
y
);
AddParam
(param, h.
param
(
6
), axis_dir.
z
);
//
distance to translate along the rotation axis
AddParam
(param, h.
param
(
7
),
20
);
//
Get some arbitrary point in the sketch, that will be used
//
as a reference when defining end faces.
hEntity pt = {
0
};
int
ai =
0
, af =
2
;
//
initial and final number of transformations
if
(subtype != Subtype::
ONE_SIDED
)
{
ai = -
1
;
af =
1
;
}
//
Not using range-for here because we're changing the size of entity in the loop.
for
(i =
0
; i < entity->
n
; i++) {
Entity *e = &(entity->
Get
(i));
if
((e->
group
.
v
!= opA.
v
) && !(e->
h
== predef.
origin
))
continue
;
if
(e->
IsPoint
()) pt = e->
h
;
e->
CalculateNumerical
(
/*
forExport=
*/
false
);
//
one copy for each end of the helix
CopyEntity
(entity, e, ai,
REMAP_LATHE_START
, h.
param
(
0
),
h.
param
(
1
), h.
param
(
2
), h.
param
(
3
), h.
param
(
4
), h.
param
(
5
),
h.
param
(
6
), h.
param
(
7
), CopyAs::
N_ROT_AXIS_TRANS
);
e = &(entity->
Get
(i));
//
because we copied.
CopyEntity
(entity, e, af,
REMAP_LATHE_END
, h.
param
(
0
),
h.
param
(
1
), h.
param
(
2
), h.
param
(
3
), h.
param
(
4
), h.
param
(
5
),
h.
param
(
6
), h.
param
(
7
), CopyAs::
N_ROT_AXIS_TRANS
);
//
For point entities on the axis, create a construction line
e = &(entity->
Get
(i));
if
(e->
IsPoint
()) {
Vector check = e->
PointGetNum
().
Minus
(axis_pos).
Cross
(axis_dir);
if
(check.
Dot
(check) <
LENGTH_EPS
) {
//
! @todo isn't this the same as &(ent[i])?
Entity *ep =
SK
.
GetEntity
(e->
h
);
Entity en = {};
//
A point gets extruded to form a line segment
en.
point
[
0
] =
Remap
(ep->
h
,
REMAP_LATHE_START
);
en.
point
[
1
] =
Remap
(ep->
h
,
REMAP_LATHE_END
);
en.
group
= h;
en.
construction
= ep->
construction
;
en.
style
= ep->
style
;
en.
h
=
Remap
(ep->
h
,
REMAP_PT_TO_LINE
);
en.
type
= Entity::Type::
LINE_SEGMENT
;
entity->
Add
(&en);
}
}
}
MakeRevolveEndFaces
(entity, pt, ai, af);
return
;
}
case
Type::
TRANSLATE
: {
//
inherit meshCombine from source group
Group *srcg =
SK
.
GetGroup
(opA);
meshCombine = srcg->
meshCombine
;
//
The translation vector
AddParam
(param, h.
param
(
0
), gp.
x
);
AddParam
(param, h.
param
(
1
), gp.
y
);
AddParam
(param, h.
param
(
2
), gp.
z
);
int
n = (
int
)valA, a0 =
0
;
if
(subtype == Subtype::
ONE_SIDED
&& skipFirst) {
a0++; n++;
}
for
(a = a0; a < n; a++) {
//
Not using range-for here because we're changing the size of entity in the loop.
for
(i =
0
; i < entity->
n
; i++) {
Entity *e = &(entity->
Get
(i));
if
(e->
group
!= opA)
continue
;
e->
CalculateNumerical
(
/*
forExport=
*/
false
);
CopyEntity
(entity, e,
a*
2
- (subtype == Subtype::
ONE_SIDED
?
0
: (n-
1
)),
(a == (n -
1
)) ?
REMAP_LAST
: a,
h.
param
(
0
), h.
param
(
1
), h.
param
(
2
),
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
NO_PARAM
,
CopyAs::
N_TRANS
);
}
}
return
;
}
case
Type::
ROTATE
: {
//
inherit meshCombine from source group
Group *srcg =
SK
.
GetGroup
(opA);
meshCombine = srcg->
meshCombine
;
//
The center of rotation
AddParam
(param, h.
param
(
0
), gc.
x
);
AddParam
(param, h.
param
(
1
), gc.
y
);
AddParam
(param, h.
param
(
2
), gc.
z
);
//
The rotation quaternion
AddParam
(param, h.
param
(
3
),
30
*
PI
/
180
);
AddParam
(param, h.
param
(
4
), gn.
x
);
AddParam
(param, h.
param
(
5
), gn.
y
);
AddParam
(param, h.
param
(
6
), gn.
z
);
int
n = (
int
)valA, a0 =
0
;
if
(subtype == Subtype::
ONE_SIDED
&& skipFirst) {
a0++; n++;
}
for
(a = a0; a < n; a++) {
//
Not using range-for here because we're changing the size of entity in the loop.
for
(i =
0
; i < entity->
n
; i++) {
Entity *e = &(entity->
Get
(i));
if
(e->
group
!= opA)
continue
;
e->
CalculateNumerical
(
/*
forExport=
*/
false
);
CopyEntity
(entity, e,
a*
2
- (subtype == Subtype::
ONE_SIDED
?
0
: (n-
1
)),
(a == (n -
1
)) ?
REMAP_LAST
: a,
h.
param
(
0
), h.
param
(
1
), h.
param
(
2
),
h.
param
(
3
), h.
param
(
4
), h.
param
(
5
), h.
param
(
6
),
NO_PARAM
,
CopyAs::
N_ROT_AA
);
}
}
return
;
}
case
Type::
LINKED
:
//
The translation vector
AddParam
(param, h.
param
(
0
), gp.
x
);
AddParam
(param, h.
param
(
1
), gp.
y
);
AddParam
(param, h.
param
(
2
), gp.
z
);
//
The rotation quaternion
AddParam
(param, h.
param
(
3
),
1
);
AddParam
(param, h.
param
(
4
),
0
);
AddParam
(param, h.
param
(
5
),
0
);
AddParam
(param, h.
param
(
6
),
0
);
//
Not using range-for here because we're changing the size of entity in the loop.
for
(i =
0
; i < impEntity.
n
; i++) {
Entity *ie = &(impEntity[i]);
CopyEntity
(entity, ie,
0
,
0
,
h.
param
(
0
), h.
param
(
1
), h.
param
(
2
),
h.
param
(
3
), h.
param
(
4
), h.
param
(
5
), h.
param
(
6
),
NO_PARAM
,
CopyAs::
N_ROT_TRANS
);
}
return
;
}
ssassert
(
false
,
"
Unexpected group type
"
);
}
bool
Group::IsSolvedOkay
() {
return
this
->
solved
.
how
== SolveResult::
OKAY
||
(
this
->
allowRedundant
&&
this
->
solved
.
how
== SolveResult::
REDUNDANT_OKAY
);
}
void
Group::AddEq
(IdList<Equation,hEquation> *l, Expr *expr,
int
index) {
Equation eq;
eq.
e
= expr;
eq.
h
= h.
equation
(index);
l->
Add
(&eq);
}
void
Group::GenerateEquations
(IdList<Equation,hEquation> *l) {
if
(type == Type::
LINKED
) {
//
Normalize the quaternion
ExprQuaternion q = {
Expr::From
(h.
param
(
3
)),
Expr::From
(h.
param
(
4
)),
Expr::From
(h.
param
(
5
)),
Expr::From
(h.
param
(
6
)) };
AddEq
(l, (q.
Magnitude
())->
Minus
(
Expr::From
(
1
)),
0
);
}
else
if
(type == Type::
ROTATE
|| type == Type::
REVOLVE
|| type == Type::
HELIX
) {
//
The axis and center of rotation are specified numerically
#
define
EC
(
x
) (Expr::From(x))
#
define
EP
(
x
) (Expr::From(h.param(x)))
ExprVector orig =
SK
.
GetEntity
(predef.
origin
)->
PointGetExprs
();
AddEq
(l, (orig.
x
)->
Minus
(
EP
(
0
)),
0
);
AddEq
(l, (orig.
y
)->
Minus
(
EP
(
1
)),
1
);
AddEq
(l, (orig.
z
)->
Minus
(
EP
(
2
)),
2
);
//
param 3 is the angle, which is free
Vector axis =
SK
.
GetEntity
(predef.
entityB
)->
VectorGetNum
();
axis = axis.
WithMagnitude
(
1
);
AddEq
(l, (
EC
(axis.
x
))->
Minus
(
EP
(
4
)),
3
);
AddEq
(l, (
EC
(axis.
y
))->
Minus
(
EP
(
5
)),
4
);
AddEq
(l, (
EC
(axis.
z
))->
Minus
(
EP
(
6
)),
5
);
#
undef
EC
#
undef
EP
}
else
if
(type == Type::
EXTRUDE
) {
if
(predef.
entityB
!= Entity::
FREE_IN_3D
) {
//
The extrusion path is locked along a line, normal to the
//
specified workplane.
Entity *w =
SK
.
GetEntity
(predef.
entityB
);
ExprVector u = w->
Normal
()->
NormalExprsU
();
ExprVector v = w->
Normal
()->
NormalExprsV
();
ExprVector extruden = {
Expr::From
(h.
param
(
0
)),
Expr::From
(h.
param
(
1
)),
Expr::From
(h.
param
(
2
)) };
AddEq
(l, u.
Dot
(extruden),
0
);
AddEq
(l, v.
Dot
(extruden),
1
);
}
}
else
if
(type == Type::
TRANSLATE
) {
if
(predef.
entityB
!= Entity::
FREE_IN_3D
) {
Entity *w =
SK
.
GetEntity
(predef.
entityB
);
ExprVector n = w->
Normal
()->
NormalExprsN
();
ExprVector trans;
trans =
ExprVector::From
(h.
param
(
0
), h.
param
(
1
), h.
param
(
2
));
//
The translation vector is parallel to the workplane
AddEq
(l, trans.
Dot
(n),
0
);
}
}
}
hEntity
Group::Remap
(hEntity in,
int
copyNumber) {
auto
it = remap.
find
({ in, copyNumber });
if
(it == remap.
end
()) {
std::tie
(it, std::ignore) =
remap.
insert
({ { in, copyNumber }, { (
uint32_t
)remap.
size
() +
1
} });
}
return
h.
entity
(it->
second
.
v
);
}
void
Group::MakeExtrusionLines
(IdList<Entity,hEntity> *el, hEntity in) {
Entity *ep =
SK
.
GetEntity
(in);
Entity en = {};
if
(ep->
IsPoint
()) {
//
A point gets extruded to form a line segment
en.
point
[
0
] =
Remap
(ep->
h
,
REMAP_TOP
);
en.
point
[
1
] =
Remap
(ep->
h
,
REMAP_BOTTOM
);
en.
group
= h;
en.
construction
= ep->
construction
;
en.
style
= ep->
style
;
en.
h
=
Remap
(ep->
h
,
REMAP_PT_TO_LINE
);
en.
type
= Entity::Type::
LINE_SEGMENT
;
el->
Add
(&en);
}
else
if
(ep->
type
== Entity::Type::
LINE_SEGMENT
) {
//
A line gets extruded to form a plane face; an endpoint of the
//
original line is a point in the plane, and the line is in the plane.
Vector a =
SK
.
GetEntity
(ep->
point
[
0
])->
PointGetNum
();
Vector b =
SK
.
GetEntity
(ep->
point
[
1
])->
PointGetNum
();
Vector ab = b.
Minus
(a);
en.
param
[
0
] = h.
param
(
0
);
en.
param
[
1
] = h.
param
(
1
);
en.
param
[
2
] = h.
param
(
2
);
en.
numPoint
= a;
en.
numNormal
=
Quaternion::From
(
0
, ab.
x
, ab.
y
, ab.
z
);
en.
group
= h;
en.
construction
= ep->
construction
;
en.
style
= ep->
style
;
en.
h
=
Remap
(ep->
h
,
REMAP_LINE_TO_FACE
);
en.
type
= Entity::Type::
FACE_XPROD
;
el->
Add
(&en);
}
}
void
Group::MakeLatheCircles
(IdList<Entity,hEntity> *el, IdList<Param,hParam> *param, hEntity in, Vector pt, Vector axis) {
Entity *ep =
SK
.
GetEntity
(in);
Entity en = {};
if
(ep->
IsPoint
()) {
//
A point gets revolved to form an arc.
en.
point
[
0
] =
Remap
(ep->
h
,
REMAP_LATHE_ARC_CENTER
);
en.
point
[
1
] =
Remap
(ep->
h
,
REMAP_LATHE_START
);
en.
point
[
2
] = en.
point
[
1
];
//
Remap(ep->h, REMAP_LATHE_END);
//
Get arc center and point on arc.
Entity *pc =
SK
.
GetEntity
(en.
point
[
0
]);
Entity *pp =
SK
.
GetEntity
(en.
point
[
1
]);
//
Project arc point to the revolution axis and use it for arc center.
double
k = pp->
numPoint
.
Minus
(pt).
Dot
(axis) / axis.
Dot
(axis);
pc->
numPoint
= pt.
Plus
(axis.
ScaledBy
(k));
//
Create arc entity.
en.
group
= h;
en.
construction
= ep->
construction
;
en.
style
= ep->
style
;
en.
h
=
Remap
(ep->
h
,
REMAP_PT_TO_ARC
);
en.
type
= Entity::Type::
ARC_OF_CIRCLE
;
//
Generate a normal.
Entity n = {};
n.
workplane
= en.
workplane
;
n.
h
=
Remap
(ep->
h
,
REMAP_PT_TO_NORMAL
);
n.
group
= en.
group
;
n.
style
= en.
style
;
n.
type
= Entity::Type::
NORMAL_N_COPY
;
//
Create basis for the normal.
Vector nu = pp->
numPoint
.
Minus
(pc->
numPoint
).
WithMagnitude
(
1.0
);
Vector nv = nu.
Cross
(axis).
WithMagnitude
(
1.0
);
n.
numNormal
=
Quaternion::From
(nv, nu);
//
The point determines where the normal gets displayed on-screen;
//
it's entirely cosmetic.
n.
point
[
0
] = en.
point
[
0
];
el->
Add
(&n);
en.
normal
= n.
h
;
el->
Add
(&en);
}
}
void
Group::MakeLatheSurfacesSelectable
(IdList<Entity, hEntity> *el, hEntity in, Vector axis) {
Entity *ep =
SK
.
GetEntity
(in);
Entity en = {};
if
(ep->
type
== Entity::Type::
LINE_SEGMENT
) {
//
An axis-perpendicular line gets revolved to form a face.
Vector a =
SK
.
GetEntity
(ep->
point
[
0
])->
PointGetNum
();
Vector b =
SK
.
GetEntity
(ep->
point
[
1
])->
PointGetNum
();
Vector u = b.
Minus
(a).
WithMagnitude
(
1.0
);
//
Check for perpendicularity: calculate cosine of the angle
//
between axis and line direction and check that
//
cos(angle) == 0 <-> angle == +-90 deg.
if
(
fabs
(u.
Dot
(axis) / axis.
Magnitude
()) <
ANGLE_COS_EPS
) {
en.
param
[
0
] = h.
param
(
0
);
en.
param
[
1
] = h.
param
(
1
);
en.
param
[
2
] = h.
param
(
2
);
Vector v = axis.
Cross
(u).
WithMagnitude
(
1.0
);
Vector n = u.
Cross
(v);
en.
numNormal
=
Quaternion::From
(
0
, n.
x
, n.
y
, n.
z
);
en.
group
= h;
en.
construction
= ep->
construction
;
en.
style
= ep->
style
;
en.
h
=
Remap
(ep->
h
,
REMAP_LINE_TO_FACE
);
en.
type
= Entity::Type::
FACE_NORMAL_PT
;
en.
point
[
0
] = ep->
point
[
0
];
el->
Add
(&en);
}
}
}
//
For Revolve and Helix groups the end faces are remapped from an arbitrary
//
point on the sketch. We reference the transformed point but there is
//
no existing normal so we need to define the rotation and timesApplied.
void
Group::MakeRevolveEndFaces
(IdList<Entity,hEntity> *el, hEntity pt,
int
ai,
int
af)
{
if
(pt.
v
==
0
)
return
;
Group *src =
SK
.
GetGroup
(opA);
Vector n = src->
polyLoops
.
normal
;
//
When there is no loop normal (e.g. if the loop is broken), use normal of workplane
//
as fallback, to avoid breaking constraints depending on the faces.
if
(n.
Equals
(
Vector::From
(
0.0
,
0.0
,
0.0
)) && src->
type
== Group::Type::
DRAWING_WORKPLANE
) {
n =
SK
.
GetEntity
(src->
h
.
entity
(
0
))->
Normal
()->
NormalN
();
}
Entity en = {};
en.
type
= Entity::Type::
FACE_ROT_NORMAL_PT
;
en.
group
= h;
//
The center of rotation
en.
param
[
0
] = h.
param
(
0
);
en.
param
[
1
] = h.
param
(
1
);
en.
param
[
2
] = h.
param
(
2
);
//
The rotation quaternion
en.
param
[
3
] = h.
param
(
3
);
en.
param
[
4
] = h.
param
(
4
);
en.
param
[
5
] = h.
param
(
5
);
en.
param
[
6
] = h.
param
(
6
);
en.
numNormal
=
Quaternion::From
(
0
, n.
x
, n.
y
, n.
z
);
en.
point
[
0
] =
Remap
(pt,
REMAP_LATHE_START
);
en.
timesApplied
= ai;
en.
h
=
Remap
(Entity::
NO_ENTITY
,
REMAP_LATHE_START
);
el->
Add
(&en);
en.
point
[
0
] =
Remap
(pt,
REMAP_LATHE_END
);
en.
timesApplied
= af;
en.
h
=
Remap
(Entity::
NO_ENTITY
,
REMAP_LATHE_END
);
el->
Add
(&en);
}
void
Group::MakeExtrusionTopBottomFaces
(IdList<Entity,hEntity> *el, hEntity pt)
{
if
(pt.
v
==
0
)
return
;
Group *src =
SK
.
GetGroup
(opA);
Vector n = src->
polyLoops
.
normal
;
View remainder of file in raw view
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