void GraphicsWindow::AnimateOntoWorkplane(void) {
if(!LockedInWorkplane()) return;
Entity *w = SK.GetEntity(ActiveWorkplane());
Quaternion quatf = w->Normal()->NormalGetNum();
Vector offsetf = (SK.GetEntity(w->point[0])->PointGetNum()).ScaledBy(-1);
AnimateOnto(quatf, offsetf);
}
GraphicsWindow::SuggestedConstraint GraphicsWindow::SuggestLineConstraint(hRequest request) {
if(LockedInWorkplane()) {
Entity *ptA = SK.GetEntity(request.entity(1)),
*ptB = SK.GetEntity(request.entity(2));
Expr *au, *av, *bu, *bv;
ptA->PointGetExprsInWorkplane(ActiveWorkplane(), &au, &av);
ptB->PointGetExprsInWorkplane(ActiveWorkplane(), &bu, &bv);
double du = au->Minus(bu)->Eval();
double dv = av->Minus(bv)->Eval();
const double TOLERANCE_RATIO = 0.02;
if(fabs(dv) > LENGTH_EPS && fabs(du / dv) < TOLERANCE_RATIO)
return SUGGESTED_VERTICAL;
else if(fabs(du) > LENGTH_EPS && fabs(dv / du) < TOLERANCE_RATIO)
return SUGGESTED_HORIZONTAL;
else
return SUGGESTED_NONE;
} else {
return SUGGESTED_NONE;
}
}
Vector GraphicsWindow::SnapToGrid(Vector p) {
if(!LockedInWorkplane()) return p;
EntityBase *wrkpl = SK.GetEntity(ActiveWorkplane()),
*norm = wrkpl->Normal();
Vector wo = SK.GetEntity(wrkpl->point[0])->PointGetNum(),
wu = norm->NormalU(),
wv = norm->NormalV(),
wn = norm->NormalN();
Vector pp = (p.Minus(wo)).DotInToCsys(wu, wv, wn);
pp.x = floor((pp.x / SS.gridSpacing) + 0.5)*SS.gridSpacing;
pp.y = floor((pp.y / SS.gridSpacing) + 0.5)*SS.gridSpacing;
pp.z = 0;
return pp.ScaleOutOfCsys(wu, wv, wn).Plus(wo);
}
hRequest GraphicsWindow::AddRequest(int type, bool rememberForUndo) {
if(rememberForUndo) SS.UndoRemember();
Request r;
memset(&r, 0, sizeof(r));
r.group = activeGroup;
Group *g = SK.GetGroup(activeGroup);
if(g->type == Group::DRAWING_3D || g->type == Group::DRAWING_WORKPLANE) {
r.construction = false;
} else {
r.construction = true;
}
r.workplane = ActiveWorkplane();
r.type = type;
SK.request.AddAndAssignId(&r);
// We must regenerate the parameters, so that the code that tries to
// place this request's entities where the mouse is can do so. But
// we mustn't try to solve until reasonable values have been supplied
// for these new parameters, or else we'll get a numerical blowup.
SS.GenerateAll(-1, -1);
SS.MarkGroupDirty(r.group);
return r.h;
}
//-----------------------------------------------------------------------------
// A single point must be selected when this function is called. We find two
// non-construction line segments that join at this point, and create a
// tangent arc joining them.
//-----------------------------------------------------------------------------
void GraphicsWindow::MakeTangentArc(void) {
if(!LockedInWorkplane()) {
Error("Must be sketching in workplane to create tangent "
"arc.");
return;
}
// The point corresponding to the vertex to be rounded.
Vector pshared = SK.GetEntity(gs.point[0])->PointGetNum();
ClearSelection();
// First, find two requests (that are not construction, and that are
// in our group and workplane) that generate entities that have an
// endpoint at our vertex to be rounded.
int i, c = 0;
Entity *ent[2];
Request *req[2];
hRequest hreq[2];
hEntity hent[2];
bool pointf[2];
for(i = 0; i < SK.request.n; i++) {
Request *r = &(SK.request.elem[i]);
if(r->group.v != activeGroup.v) continue;
if(r->workplane.v != ActiveWorkplane().v) continue;
if(r->construction) continue;
if(r->type != Request::LINE_SEGMENT &&
r->type != Request::ARC_OF_CIRCLE)
{
continue;
}
Entity *e = SK.GetEntity(r->h.entity(0));
Vector ps = e->EndpointStart(),
pf = e->EndpointFinish();
if(ps.Equals(pshared) || pf.Equals(pshared)) {
if(c < 2) {
// We record the entity and request and their handles,
// and whether the vertex to be rounded is the start or
// finish of this entity.
ent[c] = e;
hent[c] = e->h;
req[c] = r;
hreq[c] = r->h;
pointf[c] = (pf.Equals(pshared));
}
c++;
}
}
if(c != 2) {
Error("To create a tangent arc, select a point where two "
"non-construction lines or cicles in this group and "
"workplane join.");
return;
}
Entity *wrkpl = SK.GetEntity(ActiveWorkplane());
Vector wn = wrkpl->Normal()->NormalN();
// Based on these two entities, we make the objects that we'll use to
// numerically find the tangent arc.
ParametricCurve pc[2];
pc[0].MakeFromEntity(ent[0]->h, pointf[0]);
pc[1].MakeFromEntity(ent[1]->h, pointf[1]);
// And thereafter we mustn't touch the entity or req ptrs,
// because the new requests/entities we add might force a
// realloc.
memset(ent, 0, sizeof(ent));
memset(req, 0, sizeof(req));
Vector pinter;
double r, vv;
// We now do Newton iterations to find the tangent arc, and its positions
// t back along the two curves, starting from shared point of the curves
// at t = 0. Lots of iterations helps convergence, and this is still
// ~10 ms for everything.
int iters = 1000;
double t[2] = { 0, 0 }, tp[2];
for(i = 0; i < iters + 20; i++) {
Vector p0 = pc[0].PointAt(t[0]),
p1 = pc[1].PointAt(t[1]),
t0 = pc[0].TangentAt(t[0]),
t1 = pc[1].TangentAt(t[1]);
pinter = Vector::AtIntersectionOfLines(p0, p0.Plus(t0),
p1, p1.Plus(t1),
NULL, NULL, NULL);
// The sign of vv determines whether shortest distance is
// clockwise or anti-clockwise.
Vector v = (wn.Cross(t0)).WithMagnitude(1);
vv = t1.Dot(v);
double dot = (t0.WithMagnitude(1)).Dot(t1.WithMagnitude(1));
double theta = acos(dot);
if(SS.tangentArcManual) {
r = SS.tangentArcRadius;
} else {
r = 200/scale;
// Set the radius so that no more than one third of the
// line segment disappears.
r = min(r, pc[0].LengthForAuto()*tan(theta/2));
r = min(r, pc[1].LengthForAuto()*tan(theta/2));;
}
// We are source-stepping the radius, to improve convergence. So
// ramp that for most of the iterations, and then do a few at
// the end with that constant for polishing.
if(i < iters) {
r *= 0.1 + 0.9*i/((double)iters);
}
// The distance from the intersection of the lines to the endpoint
// of the arc, along each line.
double el = r/tan(theta/2);
// Compute the endpoints of the arc, for each curve
Vector pa0 = pinter.Plus(t0.WithMagnitude(el)),
pa1 = pinter.Plus(t1.WithMagnitude(el));
tp[0] = t[0];
tp[1] = t[1];
// And convert those points to parameter values along the curve.
t[0] += (pa0.Minus(p0)).DivPivoting(t0);
t[1] += (pa1.Minus(p1)).DivPivoting(t1);
}
// Stupid check for convergence, and for an out of range result (as
// we would get, for example, if the line is too short to fit the
// rounding arc).
if(fabs(tp[0] - t[0]) > 1e-3 || fabs(tp[1] - t[1]) > 1e-3 ||
t[0] < 0.01 || t[1] < 0.01 ||
t[0] > 0.99 || t[1] > 0.99 ||
isnan(t[0]) || isnan(t[1]))
{
Error("Couldn't round this corner. Try a smaller radius, or try "
"creating the desired geometry by hand with tangency "
"constraints.");
return;
}
// Compute the location of the center of the arc
Vector center = pc[0].PointAt(t[0]),
v0inter = pinter.Minus(center);
int a, b;
if(vv < 0) {
a = 1; b = 2;
center = center.Minus(v0inter.Cross(wn).WithMagnitude(r));
} else {
a = 2; b = 1;
center = center.Plus(v0inter.Cross(wn).WithMagnitude(r));
}
SS.UndoRemember();
hRequest harc = AddRequest(Request::ARC_OF_CIRCLE, false);
Entity *earc = SK.GetEntity(harc.entity(0));
hEntity hearc = earc->h;
SK.GetEntity(earc->point[0])->PointForceTo(center);
SK.GetEntity(earc->point[a])->PointForceTo(pc[0].PointAt(t[0]));
SK.GetEntity(earc->point[b])->PointForceTo(pc[1].PointAt(t[1]));
earc = NULL;
pc[0].CreateRequestTrimmedTo(t[0], !SS.tangentArcDeleteOld,
hent[0], hearc, (b == 1));
pc[1].CreateRequestTrimmedTo(t[1], !SS.tangentArcDeleteOld,
hent[1], hearc, (a == 1));
// Now either make the original entities construction, or delete them
// entirely, according to user preference.
Request *re;
SK.request.ClearTags();
for(re = SK.request.First(); re; re = SK.request.NextAfter(re)) {
if(re->h.v == hreq[0].v || re->h.v == hreq[1].v) {
if(SS.tangentArcDeleteOld) {
re->tag = 1;
} else {
re->construction = true;
}
}
}
if(SS.tangentArcDeleteOld) {
DeleteTaggedRequests();
}
SS.later.generateAll = true;
}
void GraphicsWindow::CopySelection(void) {
SS.clipboard.Clear();
Entity *wrkpl = SK.GetEntity(ActiveWorkplane());
Entity *wrkpln = SK.GetEntity(wrkpl->normal);
Vector u = wrkpln->NormalU(),
v = wrkpln->NormalV(),
n = wrkpln->NormalN(),
p = SK.GetEntity(wrkpl->point[0])->PointGetNum();
List<Selection> *ls = &(selection);
for(Selection *s = ls->First(); s; s = ls->NextAfter(s)) {
if(!s->entity.v) continue;
// Work only on entities that have requests that will generate them.
Entity *e = SK.GetEntity(s->entity);
bool hasDistance;
int req, pts;
if(!EntReqTable::GetEntityInfo(e->type, e->extraPoints,
&req, &pts, NULL, &hasDistance))
{
continue;
}
if(req == Request::WORKPLANE) continue;
ClipboardRequest cr;
ZERO(&cr);
cr.type = req;
cr.extraPoints = e->extraPoints;
cr.style = e->style;
cr.str.strcpy( e->str.str);
cr.font.strcpy( e->font.str);
cr.construction = e->construction;
for(int i = 0; i < pts; i++) {
Vector pt = SK.GetEntity(e->point[i])->PointGetNum();
pt = pt.Minus(p);
pt = pt.DotInToCsys(u, v, n);
cr.point[i] = pt;
}
if(hasDistance) {
cr.distance = SK.GetEntity(e->distance)->DistanceGetNum();
}
cr.oldEnt = e->h;
for(int i = 0; i < pts; i++) {
cr.oldPointEnt[i] = e->point[i];
}
SS.clipboard.r.Add(&cr);
}
Constraint *c;
for(c = SK.constraint.First(); c; c = SK.constraint.NextAfter(c)) {
if(c->type == Constraint::POINTS_COINCIDENT) {
if(!SS.clipboard.ContainsEntity(c->ptA)) continue;
if(!SS.clipboard.ContainsEntity(c->ptB)) continue;
} else {
continue;
}
SS.clipboard.c.Add(c);
}
}
void GraphicsWindow::PasteClipboard(Vector trans, double theta, double scale) {
Entity *wrkpl = SK.GetEntity(ActiveWorkplane());
Entity *wrkpln = SK.GetEntity(wrkpl->normal);
Vector u = wrkpln->NormalU(),
v = wrkpln->NormalV(),
n = wrkpln->NormalN(),
p = SK.GetEntity(wrkpl->point[0])->PointGetNum();
ClipboardRequest *cr;
for(cr = SS.clipboard.r.First(); cr; cr = SS.clipboard.r.NextAfter(cr)) {
hRequest hr = AddRequest(cr->type, false);
Request *r = SK.GetRequest(hr);
r->extraPoints = cr->extraPoints;
r->style = cr->style;
r->str.strcpy( cr->str.str);
r->font.strcpy( cr->font.str);
r->construction = cr->construction;
// Need to regen to get the right number of points, if extraPoints
// changed.
SS.GenerateAll(-1, -1);
SS.MarkGroupDirty(r->group);
bool hasDistance;
int i, pts;
EntReqTable::GetRequestInfo(r->type, r->extraPoints,
NULL, &pts, NULL, &hasDistance);
for(i = 0; i < pts; i++) {
Vector pt = cr->point[i];
// We need the reflection to occur within the workplane; it may
// otherwise correspond to just a rotation as projected.
if(scale < 0) {
pt.x *= -1;
}
// Likewise the scale, which could otherwise take us out of the
// workplane.
pt = pt.ScaledBy(fabs(scale));
pt = pt.ScaleOutOfCsys(u, v, Vector::From(0, 0, 0));
pt = pt.Plus(p);
pt = pt.RotatedAbout(n, theta);
pt = pt.Plus(trans);
SK.GetEntity(hr.entity(i+1))->PointForceTo(pt);
}
if(hasDistance) {
SK.GetEntity(hr.entity(64))->DistanceForceTo(
cr->distance*fabs(scale));
}
cr->newReq = hr;
MakeSelected(hr.entity(0));
for(i = 0; i < pts; i++) {
MakeSelected(hr.entity(i+1));
}
}
Constraint *c;
for(c = SS.clipboard.c.First(); c; c = SS.clipboard.c.NextAfter(c)) {
if(c->type == Constraint::POINTS_COINCIDENT) {
Constraint::ConstrainCoincident(SS.clipboard.NewEntityFor(c->ptA),
SS.clipboard.NewEntityFor(c->ptB));
}
}
SS.later.generateAll = true;
}
void GraphicsWindow::CopySelection(void) {
SS.clipboard.Clear();
Entity *wrkpl = SK.GetEntity(ActiveWorkplane());
Entity *wrkpln = SK.GetEntity(wrkpl->normal);
Vector u = wrkpln->NormalU(),
v = wrkpln->NormalV(),
n = wrkpln->NormalN(),
p = SK.GetEntity(wrkpl->point[0])->PointGetNum();
List<Selection> *ls = &(selection);
for(Selection *s = ls->First(); s; s = ls->NextAfter(s)) {
if(!s->entity.v) continue;
// Work only on entities that have requests that will generate them.
Entity *e = SK.GetEntity(s->entity);
bool hasDistance;
int req, pts;
if(!EntReqTable::GetEntityInfo(e->type, e->extraPoints,
&req, &pts, NULL, &hasDistance))
{
continue;
}
if(req == Request::WORKPLANE) continue;
ClipboardRequest cr;
ZERO(&cr);
cr.type = req;
cr.extraPoints = e->extraPoints;
cr.style = e->style;
cr.str.strcpy( e->str.str);
cr.font.strcpy( e->font.str);
cr.construction = e->construction;
{for(int i = 0; i < pts; i++) {
Vector pt = SK.GetEntity(e->point[i])->PointGetNum();
pt = pt.Minus(p);
pt = pt.DotInToCsys(u, v, n);
cr.point[i] = pt;
}}
if(hasDistance) {
cr.distance = SK.GetEntity(e->distance)->DistanceGetNum();
}
cr.oldEnt = e->h;
for(int i = 0; i < pts; i++) {
cr.oldPointEnt[i] = e->point[i];
}
SS.clipboard.r.Add(&cr);
}
Constraint *c;
for(c = SK.constraint.First(); c; c = SK.constraint.NextAfter(c)) {
if(c->type == Constraint::POINTS_COINCIDENT) {
if(!SS.clipboard.ContainsEntityWithPoint(c->ptA)) continue; //mv no entities for given points -> empty points -> don't constrain
if(!SS.clipboard.ContainsEntityWithPoint(c->ptB)) continue;
}
else if (c->type == Constraint::HORIZONTAL || c->type == Constraint::VERTICAL) {
if (!SS.copyConstraints) continue;
Entity *ea = SK.GetEntityNoOops(c->ptA);
Entity *eb = SK.GetEntityNoOops(c->ptB);
if(ea||eb) {
if (!SS.clipboard.ContainsEntityWithPoint(c->ptA)) continue;
if (!SS.clipboard.ContainsEntityWithPoint(c->ptB)) continue;
}
if(ea||eb) {
Entity *ec = SK.GetEntityNoOops(c->entityA);
if(ec) continue;
}
if (!(ea&&eb)) { //mv constraint with no points -> most likely constrained object
if (!SS.clipboard.ContainsEntity(c->entityA)) continue;
}
}
else if (c->type == Constraint::PT_PT_DISTANCE) {
if (!SS.copyConstraints) continue;
if (!SS.clipboard.ContainsEntityWithPoint(c->ptA)) continue;
if (!SS.clipboard.ContainsEntityWithPoint(c->ptB)) continue;
}
else if (c->type == Constraint::DIAMETER) {
if (!SS.copyConstraints) continue;
if (!SS.clipboard.ContainsEntity(c->entityA)) continue;
}
else if (c->type == Constraint::EQUAL_RADIUS) {
if (!SS.copyConstraints) continue;
if (!SS.clipboard.ContainsEntity(c->entityA) && !SS.clipboard.ContainsEntity(c->entityB)) continue;
//x if (SS.clipboard.ContainsEntity(c->entityA) && SS.clipboard.ContainsEntity(c->entityB)) continue; //mv note: only one circle with this particular constraint can be copied!
}
else if (c->type == Constraint::PARALLEL || c->type == Constraint::ANGLE) {
if (!SS.copyConstraints) continue;
if (!SS.clipboard.ContainsEntity(c->entityA) && !SS.clipboard.ContainsEntity(c->entityB)) continue;
//x if (!SS.clipboard.ContainsEntity(c->entityB)) continue;
}
else if (c->type == Constraint::SYMMETRIC_LINE) {
if (!SS.copyConstraints) continue;
if (!SS.clipboard.ContainsEntityWithPoint(c->ptA)) continue;
if (!SS.clipboard.ContainsEntityWithPoint(c->ptB)) continue;
if (!SS.clipboard.ContainsEntity(c->entityA)) continue;
}
else if (c->type == Constraint::PT_LINE_DISTANCE) {
if (!SS.copyConstraints) continue;
if (!SS.clipboard.ContainsEntity(c->ptA)) continue;
if (!SS.clipboard.ContainsEntity(c->entityA)) continue;
}
#if 1
else if (c->type == Constraint::EQUAL_LENGTH_LINES) { //Dangerous. You have to know what are you doing.
if (!SS.copyConstraints) continue; //It works well only for copying of constrained copy of original.
//Otherwise it can make solver busy and solvespace unresponsive.
if (!SS.clipboard.ContainsEntity(c->entityA) && !SS.clipboard.ContainsEntity(c->entityB)) continue; //no entity in clipboard -> don't copy
//x if (SS.clipboard.ContainsEntity(c->entityA) && SS.clipboard.ContainsEntity(c->entityB)) continue; //both entities in clipboard -> don't copy
}
#endif
else {
continue;
}
SS.clipboard.c.Add(c);
}
}
void GraphicsWindow::PasteClipboard(Vector trans, double theta, double scale) {
Entity *wrkpl = SK.GetEntity(ActiveWorkplane());
Entity *wrkpln = SK.GetEntity(wrkpl->normal);
Vector u = wrkpln->NormalU(),
v = wrkpln->NormalV(),
n = wrkpln->NormalN(),
p = SK.GetEntity(wrkpl->point[0])->PointGetNum();
ClipboardRequest *cr;
int requestCount = 0;
for(cr = SS.clipboard.r.First(); cr; cr = SS.clipboard.r.NextAfter(cr)) {
hRequest hr = AddRequest(cr->type, false);
Request *r = SK.GetRequest(hr);
r->extraPoints = cr->extraPoints;
r->style = cr->style;
r->str.strcpy( cr->str.str);
r->font.strcpy( cr->font.str);
r->construction = cr->construction;
// Need to regen to get the right number of points, if extraPoints
// changed.
SS.GenerateAll(-1, -1);
SS.MarkGroupDirty(r->group);
bool hasDistance;
int i, pts;
EntReqTable::GetRequestInfo(r->type, r->extraPoints,
NULL, &pts, NULL, &hasDistance);
for(i = 0; i < pts; i++) {
Vector pt = cr->point[i];
// We need the reflection to occur within the workplane; it may
// otherwise correspond to just a rotation as projected.
if(scale < 0) {
pt.x *= -1;
}
// Likewise the scale, which could otherwise take us out of the
// workplane.
pt = pt.ScaledBy(fabs(scale));
pt = pt.ScaleOutOfCsys(u, v, Vector::From(0, 0, 0));
pt = pt.Plus(p);
pt = pt.RotatedAbout(n, theta);
pt = pt.Plus(trans);
SK.GetEntity(hr.entity(i+1))->PointForceTo(pt);
}
if(hasDistance) {
SK.GetEntity(hr.entity(64))->DistanceForceTo(
cr->distance*fabs(scale));
}
cr->newReq = hr;
MakeSelected(hr.entity(0));
for(i = 0; i < pts; i++) {
MakeSelected(hr.entity(i+1));
}
++requestCount;
}
Constraint *c;
for(c = SS.clipboard.c.First(); c; c = SS.clipboard.c.NextAfter(c)) {
if(c->type == Constraint::POINTS_COINCIDENT) {
Constraint::ConstrainCoincident(SS.clipboard.NewEntityFor(c->ptA),
SS.clipboard.NewEntityFor(c->ptB));
}
if (c->type == Constraint::HORIZONTAL || c->type == Constraint::VERTICAL) { //mv horizontally constrainted object is either a line segment or 2 points
if (!SS.copyConstraints) continue;
Entity *ea = SK.GetEntityNoOops(c->entityA);
if(ea && ea->type == Entity::LINE_SEGMENT) {
if (!SS.copyConstraints) continue;
Constraint::Constrain(c->type,
Entity::NO_ENTITY,
Entity::NO_ENTITY,
SS.clipboard.NewEntityFor(c->entityA));
}
else {
Constraint::Constrain(c->type, SS.clipboard.NewEntityFor(c->ptA),
SS.clipboard.NewEntityFor(c->ptB),
Entity::NO_ENTITY);
}
}
if (c->type == Constraint::DIAMETER) {
if (!SS.copyConstraints) continue;
Entity *ea = SK.GetEntityNoOops(c->entityA);
if (ea && (ea->type == Entity::CIRCLE || ea->type == Entity::ARC_OF_CIRCLE)) {
Constraint::ConstrainValue(c->type,
Entity::NO_ENTITY,
Entity::NO_ENTITY,
SS.clipboard.NewEntityFor(c->entityA),
Entity::NO_ENTITY,
c->valA);
}
}
if (c->type == Constraint::PT_PT_DISTANCE) {
if (!SS.copyConstraints) continue;
Constraint::ConstrainValue(c->type,
SS.clipboard.NewEntityFor(c->ptA),
SS.clipboard.NewEntityFor(c->ptB),
Entity::NO_ENTITY,
Entity::NO_ENTITY,
c->valA);
}
if (c->type == Constraint::PT_LINE_DISTANCE) {
if (!SS.copyConstraints) continue;
Constraint::ConstrainValue(c->type,
SS.clipboard.NewEntityFor(c->ptA),
Entity::NO_ENTITY,
SS.clipboard.NewEntityFor(c->entityA),
Entity::NO_ENTITY,
c->valA);
}
if (c->type == Constraint::EQUAL_RADIUS /*&& requestCount == 1*/) {
if (!SS.copyConstraints) continue;
ConstrainSameSomething(c);
}
if (c->type == Constraint::EQUAL_LENGTH_LINES) { //eMVe6. Dangerous. Can make solvespace unresponsive.
if (!SS.copyConstraints) continue;
ConstrainSameSomething(c);
}
if (c->type == Constraint::ANGLE) {
if (!SS.copyConstraints) continue;
/* UNRELIABLE & SLOW AS HELL
if (SS.clipboard.ContainsEntity(c->entityA) && SS.clipboard.ContainsEntity(c->entityB)) {
Constraint::ConstrainValue(c->type,
Entity::NO_ENTITY,
Entity::NO_ENTITY,
SS.clipboard.NewEntityFor(c->entityA),
SS.clipboard.NewEntityFor(c->entityB),
c->valA);
}
*/
}
if (c->type == Constraint::PARALLEL) {
if (!SS.copyConstraints) continue;
ConstrainSameSomething(c);
}
if (c->type == Constraint::SYMMETRIC_LINE) {
if (SS.clipboard.ContainsEntity(c->ptA) &&
SS.clipboard.ContainsEntity(c->ptB) &&
SS.clipboard.ContainsEntity(c->entityA)) {
Constraint::Constrain(c->type,
SS.clipboard.NewEntityFor(c->ptA),
SS.clipboard.NewEntityFor(c->ptB),
SS.clipboard.NewEntityFor(c->entityA),
Entity::NO_ENTITY,
false,
false);
}
}
}
SS.later.generateAll = true;
}
void GraphicsWindow::EnsureValidActives(void) {
bool change = false;
// The active group must exist, and not be the references.
Group *g = SK.group.FindByIdNoOops(activeGroup);
if((!g) || (g->h.v == Group::HGROUP_REFERENCES.v)) {
int i;
for(i = 0; i < SK.groupOrder.n; i++) {
if(SK.groupOrder.elem[i].v != Group::HGROUP_REFERENCES.v) {
break;
}
}
if(i >= SK.groupOrder.n) {
// This can happen if the user deletes all the groups in the
// sketch. It's difficult to prevent that, because the last
// group might have been deleted automatically, because it failed
// a dependency. There needs to be something, so create a plane
// drawing group and activate that. They should never be able
// to delete the references, though.
activeGroup = SS.CreateDefaultDrawingGroup();
// We've created the default group, but not the workplane entity;
// do it now so that drawing mode isn't switched to "Free in 3d".
SS.GenerateAll(SolveSpaceUI::GENERATE_ALL);
} else {
activeGroup = SK.groupOrder.elem[i];
}
SK.GetGroup(activeGroup)->Activate();
change = true;
}
// The active coordinate system must also exist.
if(LockedInWorkplane()) {
Entity *e = SK.entity.FindByIdNoOops(ActiveWorkplane());
if(e) {
hGroup hgw = e->group;
if(hgw.v != activeGroup.v && SS.GroupsInOrder(activeGroup, hgw)) {
// The active workplane is in a group that comes after the
// active group; so any request or constraint will fail.
SetWorkplaneFreeIn3d();
change = true;
}
} else {
SetWorkplaneFreeIn3d();
change = true;
}
}
// And update the checked state for various menus
bool locked = LockedInWorkplane();
RadioMenuById(MNU_FREE_IN_3D, !locked);
RadioMenuById(MNU_SEL_WORKPLANE, locked);
SS.UndoEnableMenus();
switch(SS.viewUnits) {
case SolveSpaceUI::UNIT_MM:
case SolveSpaceUI::UNIT_INCHES:
break;
default:
SS.viewUnits = SolveSpaceUI::UNIT_MM;
break;
}
RadioMenuById(MNU_UNITS_MM, SS.viewUnits == SolveSpaceUI::UNIT_MM);
RadioMenuById(MNU_UNITS_INCHES, SS.viewUnits == SolveSpaceUI::UNIT_INCHES);
ShowTextWindow(SS.GW.showTextWindow);
CheckMenuById(MNU_SHOW_TEXT_WND, SS.GW.showTextWindow);
#if defined(__APPLE__)
CheckMenuById(MNU_SHOW_MENU_BAR, MenuBarIsVisible());
#endif
CheckMenuById(MNU_SHOW_TOOLBAR, SS.showToolbar);
CheckMenuById(MNU_PERSPECTIVE_PROJ, SS.usePerspectiveProj);
CheckMenuById(MNU_SHOW_GRID, SS.GW.showSnapGrid);
#if defined(HAVE_GTK) || defined(__APPLE__)
CheckMenuById(MNU_FULL_SCREEN, FullScreenIsActive());
#endif
if(change) SS.ScheduleShowTW();
}
void GraphicsWindow::Paint(void) {
int i;
havePainted = true;
int w, h;
GetGraphicsWindowSize(&w, &h);
width = w; height = h;
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glScaled(scale*2.0/w, scale*2.0/h, scale*1.0/30000);
double mat[16];
// Last thing before display is to apply the perspective
double clp = SS.CameraTangent()*scale;
MakeMatrix(mat, 1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
0, 0, clp, 1);
glMultMatrixd(mat);
// Before that, we apply the rotation
Vector n = projUp.Cross(projRight);
MakeMatrix(mat, projRight.x, projRight.y, projRight.z, 0,
projUp.x, projUp.y, projUp.z, 0,
n.x, n.y, n.z, 0,
0, 0, 0, 1);
glMultMatrixd(mat);
// And before that, the translation
MakeMatrix(mat, 1, 0, 0, offset.x,
0, 1, 0, offset.y,
0, 0, 1, offset.z,
0, 0, 0, 1);
glMultMatrixd(mat);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glShadeModel(GL_SMOOTH);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glEnable(GL_LINE_SMOOTH);
// don't enable GL_POLYGON_SMOOTH; that looks ugly on some graphics cards,
// drawn with leaks in the mesh
glEnable(GL_POLYGON_OFFSET_LINE);
glEnable(GL_POLYGON_OFFSET_FILL);
glEnable(GL_DEPTH_TEST);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glEnable(GL_NORMALIZE);
// At the same depth, we want later lines drawn over earlier.
glDepthFunc(GL_LEQUAL);
if(SS.AllGroupsOkay()) {
glClearColor(SS.backgroundColor.redF(),
SS.backgroundColor.greenF(),
SS.backgroundColor.blueF(), 1.0f);
} else {
// Draw a different background whenever we're having solve problems.
RgbColor rgb = Style::Color(Style::DRAW_ERROR);
glClearColor(0.4f*rgb.redF(), 0.4f*rgb.greenF(), 0.4f*rgb.blueF(), 1.0f);
// And show the text window, which has info to debug it
ForceTextWindowShown();
}
glClear(GL_COLOR_BUFFER_BIT);
glClearDepth(1.0);
glClear(GL_DEPTH_BUFFER_BIT);
if(SS.bgImage.fromFile) {
// If a background image is loaded, then we draw it now as a texture.
// This handles the resizing for us nicely.
glBindTexture(GL_TEXTURE_2D, TEXTURE_BACKGROUND_IMG);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
SS.bgImage.rw, SS.bgImage.rh,
0,
GL_RGB, GL_UNSIGNED_BYTE,
SS.bgImage.fromFile);
double tw = ((double)SS.bgImage.w) / SS.bgImage.rw,
th = ((double)SS.bgImage.h) / SS.bgImage.rh;
double mmw = SS.bgImage.w / SS.bgImage.scale,
mmh = SS.bgImage.h / SS.bgImage.scale;
Vector origin = SS.bgImage.origin;
origin = origin.DotInToCsys(projRight, projUp, n);
// Place the depth of our origin at the point that corresponds to
// w = 1, so that it's unaffected by perspective.
origin.z = (offset.ScaledBy(-1)).Dot(n);
origin = origin.ScaleOutOfCsys(projRight, projUp, n);
// Place the background at the very back of the Z order, though, by
// mucking with the depth range.
glDepthRange(1, 1);
glEnable(GL_TEXTURE_2D);
glBegin(GL_QUADS);
glTexCoord2d(0, 0);
ssglVertex3v(origin);
glTexCoord2d(0, th);
ssglVertex3v(origin.Plus(projUp.ScaledBy(mmh)));
glTexCoord2d(tw, th);
ssglVertex3v(origin.Plus(projRight.ScaledBy(mmw).Plus(
projUp. ScaledBy(mmh))));
glTexCoord2d(tw, 0);
ssglVertex3v(origin.Plus(projRight.ScaledBy(mmw)));
glEnd();
glDisable(GL_TEXTURE_2D);
}
ssglDepthRangeOffset(0);
// Nasty case when we're reloading the imported files; could be that
// we get an error, so a dialog pops up, and a message loop starts, and
// we have to get called to paint ourselves. If the sketch is screwed
// up, then we could trigger an oops trying to draw.
if(!SS.allConsistent) return;
// Let's use two lights, at the user-specified locations
GLfloat f;
glEnable(GL_LIGHT0);
f = (GLfloat)SS.lightIntensity[0];
GLfloat li0[] = { f, f, f, 1.0f };
glLightfv(GL_LIGHT0, GL_DIFFUSE, li0);
glLightfv(GL_LIGHT0, GL_SPECULAR, li0);
glEnable(GL_LIGHT1);
f = (GLfloat)SS.lightIntensity[1];
GLfloat li1[] = { f, f, f, 1.0f };
glLightfv(GL_LIGHT1, GL_DIFFUSE, li1);
glLightfv(GL_LIGHT1, GL_SPECULAR, li1);
Vector ld;
ld = VectorFromProjs(SS.lightDir[0]);
GLfloat ld0[4] = { (GLfloat)ld.x, (GLfloat)ld.y, (GLfloat)ld.z, 0 };
glLightfv(GL_LIGHT0, GL_POSITION, ld0);
ld = VectorFromProjs(SS.lightDir[1]);
GLfloat ld1[4] = { (GLfloat)ld.x, (GLfloat)ld.y, (GLfloat)ld.z, 0 };
glLightfv(GL_LIGHT1, GL_POSITION, ld1);
if(SS.drawBackFaces) {
// For debugging, draw the backs of the triangles in red, so that we
// notice when a shell is open
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 1);
} else {
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 0);
}
GLfloat ambient[4] = { (float)SS.ambientIntensity,
(float)SS.ambientIntensity,
(float)SS.ambientIntensity, 1 };
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
ssglUnlockColor();
if(showSnapGrid && LockedInWorkplane()) {
hEntity he = ActiveWorkplane();
EntityBase *wrkpl = SK.GetEntity(he),
*norm = wrkpl->Normal();
Vector wu, wv, wn, wp;
wp = SK.GetEntity(wrkpl->point[0])->PointGetNum();
wu = norm->NormalU();
wv = norm->NormalV();
wn = norm->NormalN();
double g = SS.gridSpacing;
double umin = VERY_POSITIVE, umax = VERY_NEGATIVE,
vmin = VERY_POSITIVE, vmax = VERY_NEGATIVE;
int a;
for(a = 0; a < 4; a++) {
// Ideally, we would just do +/- half the width and height; but
// allow some extra slop for rounding.
Vector horiz = projRight.ScaledBy((0.6*width)/scale + 2*g),
vert = projUp. ScaledBy((0.6*height)/scale + 2*g);
if(a == 2 || a == 3) horiz = horiz.ScaledBy(-1);
if(a == 1 || a == 3) vert = vert. ScaledBy(-1);
Vector tp = horiz.Plus(vert).Minus(offset);
// Project the point into our grid plane, normal to the screen
// (not to the grid plane). If the plane is on edge then this is
// impossible so don't try to draw the grid.
bool parallel;
Vector tpp = Vector::AtIntersectionOfPlaneAndLine(
wn, wn.Dot(wp),
tp, tp.Plus(n),
¶llel);
if(parallel) goto nogrid;
tpp = tpp.Minus(wp);
double uu = tpp.Dot(wu),
vv = tpp.Dot(wv);
umin = min(uu, umin);
umax = max(uu, umax);
vmin = min(vv, vmin);
vmax = max(vv, vmax);
}
int i, j, i0, i1, j0, j1;
i0 = (int)(umin / g);
i1 = (int)(umax / g);
j0 = (int)(vmin / g);
j1 = (int)(vmax / g);
if(i0 > i1 || i1 - i0 > 400) goto nogrid;
if(j0 > j1 || j1 - j0 > 400) goto nogrid;
glLineWidth(1);
ssglColorRGBa(Style::Color(Style::DATUM), 0.3);
glBegin(GL_LINES);
for(i = i0 + 1; i < i1; i++) {
ssglVertex3v(wp.Plus(wu.ScaledBy(i*g)).Plus(wv.ScaledBy(j0*g)));
ssglVertex3v(wp.Plus(wu.ScaledBy(i*g)).Plus(wv.ScaledBy(j1*g)));
}
for(j = j0 + 1; j < j1; j++) {
ssglVertex3v(wp.Plus(wu.ScaledBy(i0*g)).Plus(wv.ScaledBy(j*g)));
ssglVertex3v(wp.Plus(wu.ScaledBy(i1*g)).Plus(wv.ScaledBy(j*g)));
}
glEnd();
// Clear the depth buffer, so that the grid is at the very back of
// the Z order.
glClear(GL_DEPTH_BUFFER_BIT);
nogrid:;
}
// Draw the active group; this does stuff like the mesh and edges.
(SK.GetGroup(activeGroup))->Draw();
// Now draw the entities
if(showHdnLines) glDisable(GL_DEPTH_TEST);
Entity::DrawAll();
// Draw filled paths in all groups, when those filled paths were requested
// specially by assigning a style with a fill color, or when the filled
// paths are just being filled by default. This should go last, to make
// the transparency work.
Group *g;
for(g = SK.group.First(); g; g = SK.group.NextAfter(g)) {
if(!(g->IsVisible())) continue;
g->DrawFilledPaths();
}
glDisable(GL_DEPTH_TEST);
// Draw the constraints
for(i = 0; i < SK.constraint.n; i++) {
SK.constraint.elem[i].Draw();
}
// Draw the traced path, if one exists
glLineWidth(Style::Width(Style::ANALYZE));
ssglColorRGB(Style::Color(Style::ANALYZE));
SContour *sc = &(SS.traced.path);
glBegin(GL_LINE_STRIP);
for(i = 0; i < sc->l.n; i++) {
ssglVertex3v(sc->l.elem[i].p);
}
glEnd();
// And the naked edges, if the user did Analyze -> Show Naked Edges.
glLineWidth(Style::Width(Style::DRAW_ERROR));
ssglColorRGB(Style::Color(Style::DRAW_ERROR));
ssglDrawEdges(&(SS.nakedEdges), true);
// Then redraw whatever the mouse is hovering over, highlighted.
glDisable(GL_DEPTH_TEST);
ssglLockColorTo(Style::Color(Style::HOVERED));
hover.Draw();
// And finally draw the selection, same mechanism.
ssglLockColorTo(Style::Color(Style::SELECTED));
for(Selection *s = selection.First(); s; s = selection.NextAfter(s)) {
s->Draw();
}
ssglUnlockColor();
// If a marquee selection is in progress, then draw the selection
// rectangle, as an outline and a transparent fill.
if(pending.operation == DRAGGING_MARQUEE) {
Point2d begin = ProjectPoint(orig.marqueePoint);
double xmin = min(orig.mouse.x, begin.x),
xmax = max(orig.mouse.x, begin.x),
ymin = min(orig.mouse.y, begin.y),
ymax = max(orig.mouse.y, begin.y);
Vector tl = UnProjectPoint(Point2d::From(xmin, ymin)),
tr = UnProjectPoint(Point2d::From(xmax, ymin)),
br = UnProjectPoint(Point2d::From(xmax, ymax)),
bl = UnProjectPoint(Point2d::From(xmin, ymax));
glLineWidth((GLfloat)1.3);
ssglColorRGB(Style::Color(Style::HOVERED));
glBegin(GL_LINE_LOOP);
ssglVertex3v(tl);
ssglVertex3v(tr);
ssglVertex3v(br);
ssglVertex3v(bl);
glEnd();
ssglColorRGBa(Style::Color(Style::HOVERED), 0.10);
glBegin(GL_QUADS);
ssglVertex3v(tl);
ssglVertex3v(tr);
ssglVertex3v(br);
ssglVertex3v(bl);
glEnd();
}
// An extra line, used to indicate the origin when rotating within the
// plane of the monitor.
if(SS.extraLine.draw) {
glLineWidth(1);
ssglLockColorTo(Style::Color(Style::DATUM));
glBegin(GL_LINES);
ssglVertex3v(SS.extraLine.ptA);
ssglVertex3v(SS.extraLine.ptB);
glEnd();
}
// A note to indicate the origin in the just-exported file.
if(SS.justExportedInfo.draw) {
ssglColorRGB(Style::Color(Style::DATUM));
Vector p = SS.justExportedInfo.pt,
u = SS.justExportedInfo.u,
v = SS.justExportedInfo.v;
glLineWidth(1.5);
glBegin(GL_LINES);
ssglVertex3v(p.Plus(u.WithMagnitude(-15/scale)));
ssglVertex3v(p.Plus(u.WithMagnitude(30/scale)));
ssglVertex3v(p.Plus(v.WithMagnitude(-15/scale)));
ssglVertex3v(p.Plus(v.WithMagnitude(30/scale)));
glEnd();
ssglWriteText("(x, y) = (0, 0) for file just exported",
DEFAULT_TEXT_HEIGHT,
p.Plus(u.ScaledBy(10/scale)).Plus(v.ScaledBy(10/scale)),
u, v, NULL, NULL);
ssglWriteText("press Esc to clear this message",
DEFAULT_TEXT_HEIGHT,
p.Plus(u.ScaledBy(40/scale)).Plus(
v.ScaledBy(-(DEFAULT_TEXT_HEIGHT)/scale)),
u, v, NULL, NULL);
}
// And finally the toolbar.
if(SS.showToolbar) {
ToolbarDraw();
}
}
