SS.tangentArcRadius = 10.0;

// Then, load the registry settings.

int i;

// Default list of colors for the model material

modelColor[0] = CnfThawColor(RGBi(150, 150, 150), "ModelColor_0");

modelColor[1] = CnfThawColor(RGBi(100, 100, 100), "ModelColor_1");

modelColor[2] = CnfThawColor(RGBi( 30, 30, 30), "ModelColor_2");

modelColor[3] = CnfThawColor(RGBi(150, 0, 0), "ModelColor_3");

modelColor[4] = CnfThawColor(RGBi( 0, 100, 0), "ModelColor_4");

modelColor[5] = CnfThawColor(RGBi( 0, 80, 80), "ModelColor_5");

modelColor[6] = CnfThawColor(RGBi( 0, 0, 130), "ModelColor_6");

modelColor[7] = CnfThawColor(RGBi( 80, 0, 80), "ModelColor_7");

// Light intensities

lightIntensity[0] = CnfThawFloat(1.0f, "LightIntensity_0");

lightIntensity[1] = CnfThawFloat(0.5f, "LightIntensity_1");

ambientIntensity = 0.3; // no setting for that yet

// Light positions

lightDir[0].x = CnfThawFloat(-1.0f, "LightDir_0_Right" );

lightDir[0].y = CnfThawFloat( 1.0f, "LightDir_0_Up" );

lightDir[0].z = CnfThawFloat( 0.0f, "LightDir_0_Forward" );

lightDir[1].x = CnfThawFloat( 1.0f, "LightDir_1_Right" );

lightDir[1].y = CnfThawFloat( 0.0f, "LightDir_1_Up" );

lightDir[1].z = CnfThawFloat( 0.0f, "LightDir_1_Forward" );

exportMode = false;

// Chord tolerance

chordTol = CnfThawFloat(0.5f, "ChordTolerancePct");

// Max pwl segments to generate

maxSegments = CnfThawInt(10, "MaxSegments");

// Chord tolerance

exportChordTol = CnfThawFloat(0.1f, "ExportChordTolerance");

// Max pwl segments to generate

exportMaxSegments = CnfThawInt(64, "ExportMaxSegments");

// View units

viewUnits = (Unit)CnfThawInt((uint32_t)UNIT_MM, "ViewUnits");

// Number of digits after the decimal point

afterDecimalMm = CnfThawInt(2, "AfterDecimalMm");

afterDecimalInch = CnfThawInt(3, "AfterDecimalInch");

// Camera tangent (determines perspective)

cameraTangent = CnfThawFloat(0.3f/1e3f, "CameraTangent");

// Grid spacing

gridSpacing = CnfThawFloat(5.0f, "GridSpacing");

// Export scale factor

exportScale = CnfThawFloat(1.0f, "ExportScale");

// Export offset (cutter radius comp)

exportOffset = CnfThawFloat(0.0f, "ExportOffset");

// Rewrite exported colors close to white into black (assuming white bg)

fixExportColors = CnfThawBool(true, "FixExportColors");

// Draw back faces of triangles (when mesh is leaky/self-intersecting)

drawBackFaces = CnfThawBool(true, "DrawBackFaces");

// Check that contours are closed and not self-intersecting

checkClosedContour = CnfThawBool(true, "CheckClosedContour");

// Export shaded triangles in a 2d view

exportShadedTriangles = CnfThawBool(true, "ExportShadedTriangles");

// Export pwl curves (instead of exact) always

exportPwlCurves = CnfThawBool(false, "ExportPwlCurves");

// Background color on-screen

backgroundColor = CnfThawColor(RGBi(0, 0, 0), "BackgroundColor");

// Whether export canvas size is fixed or derived from bbox

exportCanvasSizeAuto = CnfThawBool(true, "ExportCanvasSizeAuto");

// Margins for automatic canvas size

exportMargin.left = CnfThawFloat(5.0f, "ExportMargin_Left");

exportMargin.right = CnfThawFloat(5.0f, "ExportMargin_Right");

exportMargin.bottom = CnfThawFloat(5.0f, "ExportMargin_Bottom");

exportMargin.top = CnfThawFloat(5.0f, "ExportMargin_Top");

// Dimensions for fixed canvas size

exportCanvas.width = CnfThawFloat(100.0f, "ExportCanvas_Width");

exportCanvas.height = CnfThawFloat(100.0f, "ExportCanvas_Height");

exportCanvas.dx = CnfThawFloat( 5.0f, "ExportCanvas_Dx");

exportCanvas.dy = CnfThawFloat( 5.0f, "ExportCanvas_Dy");

// Extra parameters when exporting G code

gCode.depth = CnfThawFloat(10.0f, "GCode_Depth");

gCode.passes = CnfThawInt(1, "GCode_Passes");

gCode.feed = CnfThawFloat(10.0f, "GCode_Feed");

gCode.plungeFeed = CnfThawFloat(10.0f, "GCode_PlungeFeed");

// Show toolbar in the graphics window

showToolbar = CnfThawBool(true, "ShowToolbar");

// Recent files menus

for(i = 0; i < MAX_RECENT; i++) {

RecentFile[i] = CnfThawString("", "RecentFile_" + std::to_string(i));

}

RefreshRecentMenus();

// Autosave timer

autosaveInterval = CnfThawInt(5, "AutosaveInterval");

// The default styles (colors, line widths, etc.) are also stored in the

// configuration file, but we will automatically load those as we need

// them.

SetAutosaveTimerFor(autosaveInterval);

NewFile();

AfterNewFile();

std::string autosaveFile = filename + AUTOSAVE_SUFFIX;

FILE *f = ssfopen(autosaveFile, "rb");

if(!f)

return false;

fclose(f);

if(LoadAutosaveYesNo() == DIALOG_YES) {

unsaved = true;

return LoadFromFile(autosaveFile);

}

return false;

bool autosaveLoaded = LoadAutosaveFor(filename);

bool fileLoaded = autosaveLoaded || LoadFromFile(filename);

if(fileLoaded)

saveFile = filename;

bool success = fileLoaded && ReloadAllImported(/*canCancel=*/true);

if(success) {

AddToRecentList(filename);

} else {

saveFile = "";

NewFile();

}

AfterNewFile();

unsaved = autosaveLoaded;

return success;

// Recent files

for(int i = 0; i < MAX_RECENT; i++)

CnfFreezeString(RecentFile[i], "RecentFile_" + std::to_string(i));

// Model colors

for(int i = 0; i < MODEL_COLORS; i++)

CnfFreezeColor(modelColor[i], "ModelColor_" + std::to_string(i));

// Light intensities

CnfFreezeFloat((float)lightIntensity[0], "LightIntensity_0");

CnfFreezeFloat((float)lightIntensity[1], "LightIntensity_1");

// Light directions

CnfFreezeFloat((float)lightDir[0].x, "LightDir_0_Right");

CnfFreezeFloat((float)lightDir[0].y, "LightDir_0_Up");

CnfFreezeFloat((float)lightDir[0].z, "LightDir_0_Forward");

CnfFreezeFloat((float)lightDir[1].x, "LightDir_1_Right");

CnfFreezeFloat((float)lightDir[1].y, "LightDir_1_Up");

CnfFreezeFloat((float)lightDir[1].z, "LightDir_1_Forward");

// Chord tolerance

CnfFreezeFloat((float)chordTol, "ChordTolerancePct");

// Max pwl segments to generate

CnfFreezeInt((uint32_t)maxSegments, "MaxSegments");

// Export Chord tolerance

CnfFreezeFloat((float)exportChordTol, "ExportChordTolerance");

// Export Max pwl segments to generate

CnfFreezeInt((uint32_t)exportMaxSegments, "ExportMaxSegments");

// View units

CnfFreezeInt((uint32_t)viewUnits, "ViewUnits");

// Number of digits after the decimal point

CnfFreezeInt((uint32_t)afterDecimalMm, "AfterDecimalMm");

CnfFreezeInt((uint32_t)afterDecimalInch, "AfterDecimalInch");

// Camera tangent (determines perspective)

CnfFreezeFloat((float)cameraTangent, "CameraTangent");

// Grid spacing

CnfFreezeFloat(gridSpacing, "GridSpacing");

// Export scale

CnfFreezeFloat(exportScale, "ExportScale");

// Export offset (cutter radius comp)

CnfFreezeFloat(exportOffset, "ExportOffset");

// Rewrite exported colors close to white into black (assuming white bg)

CnfFreezeBool(fixExportColors, "FixExportColors");

// Draw back faces of triangles (when mesh is leaky/self-intersecting)

CnfFreezeBool(drawBackFaces, "DrawBackFaces");

// Check that contours are closed and not self-intersecting

CnfFreezeBool(checkClosedContour, "CheckClosedContour");

// Export shaded triangles in a 2d view

CnfFreezeBool(exportShadedTriangles, "ExportShadedTriangles");

// Export pwl curves (instead of exact) always

CnfFreezeBool(exportPwlCurves, "ExportPwlCurves");

// Background color on-screen

CnfFreezeColor(backgroundColor, "BackgroundColor");

// Whether export canvas size is fixed or derived from bbox

CnfFreezeBool(exportCanvasSizeAuto, "ExportCanvasSizeAuto");

// Margins for automatic canvas size

CnfFreezeFloat(exportMargin.left, "ExportMargin_Left");

CnfFreezeFloat(exportMargin.right, "ExportMargin_Right");

CnfFreezeFloat(exportMargin.bottom, "ExportMargin_Bottom");

CnfFreezeFloat(exportMargin.top, "ExportMargin_Top");

// Dimensions for fixed canvas size

CnfFreezeFloat(exportCanvas.width, "ExportCanvas_Width");

CnfFreezeFloat(exportCanvas.height, "ExportCanvas_Height");

CnfFreezeFloat(exportCanvas.dx, "ExportCanvas_Dx");

CnfFreezeFloat(exportCanvas.dy, "ExportCanvas_Dy");

// Extra parameters when exporting G code

CnfFreezeFloat(gCode.depth, "GCode_Depth");

CnfFreezeInt(gCode.passes, "GCode_Passes");

CnfFreezeFloat(gCode.feed, "GCode_Feed");

CnfFreezeFloat(gCode.plungeFeed, "GCode_PlungeFeed");

// Show toolbar in the graphics window

CnfFreezeBool(showToolbar, "ShowToolbar");

// Autosave timer

CnfFreezeInt(autosaveInterval, "AutosaveInterval");

// And the default styles, colors and line widths and such.

Style::FreezeDefaultStyles();

ExitNow();

if(!later.scheduled) ScheduleLater();

later.scheduled = true;

later.generateAll = true;

if(!later.scheduled) ScheduleLater();

later.scheduled = true;

later.showTW = true;

if(later.generateAll) GenerateAll();

if(later.showTW) TW.Show();

later = {};

if(viewUnits == UNIT_INCHES) {

return 25.4;

} else {

return 1.0;

}

if(viewUnits == UNIT_INCHES) {

return ssprintf("%.*f", afterDecimalInch, v/25.4);

} else {

return ssprintf("%.*f", afterDecimalMm, v);

}

if(viewUnits == UNIT_INCHES) {

afterDecimalInch = v;

} else {

afterDecimalMm = v;

}

if(!usePerspectiveProj) {

return 0;

} else {

return cameraTangent;

}

// Clear out the traced point, which is no longer valid

traced.point = Entity::NO_ENTITY;

traced.path.l.Clear();

// and the naked edges

nakedEdges.Clear();

// Quit export mode

justExportedInfo.draw = false;

exportMode = false;

// GenerateAll() expects the view to be valid, because it uses that to

// fill in default values for extrusion depths etc. (which won't matter

// here, but just don't let it work on garbage)

SS.GW.offset = Vector::From(0, 0, 0);

SS.GW.projRight = Vector::From(1, 0, 0);

SS.GW.projUp = Vector::From(0, 1, 0);

GenerateAll(GENERATE_REGEN);

TW.Init();

GW.Init();

unsaved = false;

int w, h;

GetGraphicsWindowSize(&w, &h);

GW.width = w;

GW.height = h;

// The triangles haven't been generated yet, but zoom to fit the entities

// roughly in the window, since that sets the mesh tolerance. Consider

// invisible entities, so we still get something reasonable if the only

// thing visible is the not-yet-generated surfaces.

GW.ZoomToFit(true);

GenerateAll(GENERATE_ALL);

SS.ScheduleShowTW();

// Then zoom to fit again, to fit the triangles

GW.ZoomToFit(false);

// Create all the default styles; they'll get created on the fly anyways,

// but can't hurt to do it now.

Style::CreateAllDefaultStyles();

UpdateWindowTitle();

int src, dest;

dest = 0;

for(src = 0; src < MAX_RECENT; src++) {

if(filename != RecentFile[src]) {

if(src != dest) RecentFile[dest] = RecentFile[src];

dest++;

}

}

while(dest < MAX_RECENT) RecentFile[dest++].clear();

RefreshRecentMenus();

RemoveFromRecentList(filename);

int src;

for(src = MAX_RECENT - 2; src >= 0; src--) {

RecentFile[src+1] = RecentFile[src];

}

RecentFile[0] = filename;

RefreshRecentMenus();

std::string prevSaveFile = saveFile;

if(saveAs || saveFile.empty()) {

if(!GetSaveFile(&saveFile, "", SlvsFileFilter)) return false;

// need to get new filename directly into saveFile, since that

// determines linkFileRel path

}

if(SaveToFile(saveFile)) {

AddToRecentList(saveFile);

RemoveAutosave();

unsaved = false;

return true;

} else {

// don't store an invalid save filename

saveFile = prevSaveFile;

return false;

}

{

SetAutosaveTimerFor(autosaveInterval);

if(!saveFile.empty() && unsaved)

return SaveToFile(saveFile + AUTOSAVE_SUFFIX);

return false;

{

std::string autosaveFile = saveFile + AUTOSAVE_SUFFIX;

ssremove(autosaveFile);

if(!unsaved) return true;

switch(SaveFileYesNoCancel()) {

case DIALOG_YES:

return GetFilenameAndSave(false);

case DIALOG_NO:

RemoveAutosave();

return true;

case DIALOG_CANCEL:

return false;

default: oops(); break;

}

int dot = filename.rfind('.');

if(dot >= 0) {

std::string ext = filename.substr(dot + 1, filename.length());

std::transform(ext.begin(), ext.end(), ext.begin(), ::tolower);

return ext;

}

return "";

if(id >= RECENT_OPEN && id < (RECENT_OPEN+MAX_RECENT)) {

if(!SS.OkayToStartNewFile()) return;

std::string newFile = RecentFile[id - RECENT_OPEN];

SS.OpenFile(newFile);

return;

}

switch(id) {

case GraphicsWindow::MNU_NEW:

if(!SS.OkayToStartNewFile()) break;

SS.saveFile = "";

SS.NewFile();

SS.AfterNewFile();

break;

case GraphicsWindow::MNU_OPEN: {

if(!SS.OkayToStartNewFile()) break;

std::string newFile;

if(GetOpenFile(&newFile, "", SlvsFileFilter)) {

SS.OpenFile(newFile);

}

break;

}

case GraphicsWindow::MNU_SAVE:

SS.GetFilenameAndSave(false);

break;

case GraphicsWindow::MNU_SAVE_AS:

SS.GetFilenameAndSave(true);

break;

case GraphicsWindow::MNU_EXPORT_PNG: {

std::string exportFile;

if(!GetSaveFile(&exportFile, "", PngFileFilter)) break;

SS.ExportAsPngTo(exportFile);

break;

}

case GraphicsWindow::MNU_EXPORT_VIEW: {

std::string exportFile;

if(!GetSaveFile(&exportFile, CnfThawString("", "ViewExportFormat"),

VectorFileFilter)) break;

CnfFreezeString(Extension(exportFile), "ViewExportFormat");

// If the user is exporting something where it would be

// inappropriate to include the constraints, then warn.

if(SS.GW.showConstraints &&

(FilenameHasExtension(exportFile, ".txt") ||

fabs(SS.exportOffset) > LENGTH_EPS))

{

Message("Constraints are currently shown, and will be exported "

"in the toolpath. This is probably not what you want; "

"hide them by clicking the link at the top of the "

"text window.");

}

SS.ExportViewOrWireframeTo(exportFile, false);

break;

}

case GraphicsWindow::MNU_EXPORT_WIREFRAME: {

std::string exportFile;

if(!GetSaveFile(&exportFile, CnfThawString("", "WireframeExportFormat"),

Vector3dFileFilter)) break;

CnfFreezeString(Extension(exportFile), "WireframeExportFormat");

SS.ExportViewOrWireframeTo(exportFile, true);

break;

}

case GraphicsWindow::MNU_EXPORT_SECTION: {

std::string exportFile;

if(!GetSaveFile(&exportFile, CnfThawString("", "SectionExportFormat"),

VectorFileFilter)) break;

CnfFreezeString(Extension(exportFile), "SectionExportFormat");

SS.ExportSectionTo(exportFile);

break;

}

case GraphicsWindow::MNU_EXPORT_MESH: {

std::string exportFile;

if(!GetSaveFile(&exportFile, CnfThawString("", "MeshExportFormat"),

MeshFileFilter)) break;

CnfFreezeString(Extension(exportFile), "MeshExportFormat");

SS.ExportMeshTo(exportFile);

break;

}

case GraphicsWindow::MNU_EXPORT_SURFACES: {

std::string exportFile;

if(!GetSaveFile(&exportFile, CnfThawString("", "SurfacesExportFormat"),

SurfaceFileFilter)) break;

CnfFreezeString(Extension(exportFile), "SurfacesExportFormat");

StepFileWriter sfw = {};

sfw.ExportSurfacesTo(exportFile);

break;

}

case GraphicsWindow::MNU_IMPORT: {

std::string importFile;

if(!GetOpenFile(&importFile, CnfThawString("", "ImportFormat"),

ImportableFileFilter)) break;

CnfFreezeString(Extension(importFile), "ImportFormat");

if(Extension(importFile) == "dxf") {

ImportDxf(importFile);

} else if(Extension(importFile) == "dwg") {

ImportDwg(importFile);

} else {

Error("Can't identify file type from file extension of "

"filename '%s'; try .dxf or .dwg.", importFile.c_str());

}

SS.GenerateAll(SolveSpaceUI::GENERATE_UNTIL_ACTIVE);

SS.ScheduleShowTW();

break;

}

case GraphicsWindow::MNU_EXIT:

if(!SS.OkayToStartNewFile()) break;

SS.Exit();

break;

default: oops();

}

SS.UpdateWindowTitle();

SS.GW.GroupSelection();

#define gs (SS.GW.gs)

switch(id) {

case GraphicsWindow::MNU_STEP_DIM:

if(gs.constraints == 1 && gs.n == 0) {

Constraint *c = SK.GetConstraint(gs.constraint[0]);

if(c->HasLabel() && !c->reference) {

SS.TW.shown.dimFinish = c->valA;

SS.TW.shown.dimSteps = 10;

SS.TW.shown.dimIsDistance =

(c->type != Constraint::ANGLE) &&

(c->type != Constraint::LENGTH_RATIO) &&

(c->type != Constraint::LENGTH_DIFFERENCE);

SS.TW.shown.constraint = c->h;

SS.TW.shown.screen = TextWindow::SCREEN_STEP_DIMENSION;

// The step params are specified in the text window,

// so force that to be shown.

SS.GW.ForceTextWindowShown();

SS.ScheduleShowTW();

SS.GW.ClearSelection();

} else {

Error("Constraint must have a label, and must not be "

"a reference dimension.");

}

} else {

Error("Bad selection for step dimension; select a constraint.");

}

break;

case GraphicsWindow::MNU_NAKED_EDGES: {

SS.nakedEdges.Clear();

Group *g = SK.GetGroup(SS.GW.activeGroup);

SMesh *m = &(g->displayMesh);

SKdNode *root = SKdNode::From(m);

bool inters, leaks;

root->MakeCertainEdgesInto(&(SS.nakedEdges),

SKdNode::NAKED_OR_SELF_INTER_EDGES, true, &inters, &leaks);

InvalidateGraphics();

const char *intersMsg = inters ?

"The mesh is self-intersecting (NOT okay, invalid)." :

"The mesh is not self-intersecting (okay, valid).";

const char *leaksMsg = leaks ?

"The mesh has naked edges (NOT okay, invalid)." :

"The mesh is watertight (okay, valid).";

std::string cntMsg = ssprintf("\n\nThe model contains %d triangles, from "

"%d surfaces.", g->displayMesh.l.n, g->runningShell.surface.n);

if(SS.nakedEdges.l.n == 0) {

Message("%s\n\n%s\n\nZero problematic edges, good.%s",

intersMsg, leaksMsg, cntMsg.c_str());

} else {

Error("%s\n\n%s\n\n%d problematic edges, bad.%s",

intersMsg, leaksMsg, SS.nakedEdges.l.n, cntMsg.c_str());

}

break;

}

case GraphicsWindow::MNU_INTERFERENCE: {

SS.nakedEdges.Clear();

SMesh *m = &(SK.GetGroup(SS.GW.activeGroup)->displayMesh);

SKdNode *root = SKdNode::From(m);

bool inters, leaks;

root->MakeCertainEdgesInto(&(SS.nakedEdges),

SKdNode::SELF_INTER_EDGES, false, &inters, &leaks);

InvalidateGraphics();

if(inters) {

Error("%d edges interfere with other triangles, bad.",

SS.nakedEdges.l.n);

} else {

Message("The assembly does not interfere, good.");

}

break;

}

case GraphicsWindow::MNU_VOLUME: {

SMesh *m = &(SK.GetGroup(SS.GW.activeGroup)->displayMesh);

double vol = 0;

int i;

for(i = 0; i < m->l.n; i++) {

STriangle tr = m->l.elem[i];

// Translate to place vertex A at (x, y, 0)

Vector trans = Vector::From(tr.a.x, tr.a.y, 0);

tr.a = (tr.a).Minus(trans);

tr.b = (tr.b).Minus(trans);

tr.c = (tr.c).Minus(trans);

// Rotate to place vertex B on the y-axis. Depending on

// whether the triangle is CW or CCW, C is either to the

// right or to the left of the y-axis. This handles the

// sign of our normal.

Vector u = Vector::From(-tr.b.y, tr.b.x, 0);

u = u.WithMagnitude(1);

Vector v = Vector::From(tr.b.x, tr.b.y, 0);

v = v.WithMagnitude(1);

Vector n = Vector::From(0, 0, 1);

tr.a = (tr.a).DotInToCsys(u, v, n);

tr.b = (tr.b).DotInToCsys(u, v, n);

tr.c = (tr.c).DotInToCsys(u, v, n);

n = tr.Normal().WithMagnitude(1);

// Triangles on edge don't contribute

if(fabs(n.z) < LENGTH_EPS) continue;

// The plane has equation p dot n = a dot n

double d = (tr.a).Dot(n);

// nx*x + ny*y + nz*z = d

// nz*z = d - nx*x - ny*y

double A = -n.x/n.z, B = -n.y/n.z, C = d/n.z;

double mac = tr.c.y/tr.c.x, mbc = (tr.c.y - tr.b.y)/tr.c.x;

double xc = tr.c.x, yb = tr.b.y;

// I asked Maple for

// int(int(A*x + B*y +C, y=mac*x..(mbc*x + yb)), x=0..xc);

double integral =

(1.0/3)*(

A*(mbc-mac)+

(1.0/2)*B*(mbc*mbc-mac*mac)

)*(xc*xc*xc)+

(1.0/2)*(A*yb+B*yb*mbc+C*(mbc-mac))*xc*xc+

C*yb*xc+

(1.0/2)*B*yb*yb*xc;

vol += integral;

}

std::string msg = ssprintf("The volume of the solid model is:\n\n"" %.3f %s^3",

vol / pow(SS.MmPerUnit(), 3),

SS.UnitName());

if(SS.viewUnits == SolveSpaceUI::UNIT_MM) {

msg += ssprintf("\n %.2f mL", vol/(10*10*10));

}

msg += "\n\nCurved surfaces have been approximated as triangles.\n"

"This introduces error, typically of around 1%.";

Message("%s", msg.c_str());

break;

}

case GraphicsWindow::MNU_AREA: {

Group *g = SK.GetGroup(SS.GW.activeGroup);

if(g->polyError.how != Group::POLY_GOOD) {

Error("This group does not contain a correctly-formed "

"2d closed area. It is open, not coplanar, or self-"

"intersecting.");

break;

}

SEdgeList sel = {};

g->polyLoops.MakeEdgesInto(&sel);

SPolygon sp = {};

sel.AssemblePolygon(&sp, NULL, true);

sp.normal = sp.ComputeNormal();

sp.FixContourDirections();

double area = sp.SignedArea();

double scale = SS.MmPerUnit();

Message("The area of the region sketched in this group is:\n\n"

" %.3f %s^2\n\n"

"Curves have been approximated as piecewise linear.\n"

"This introduces error, typically of around 1%%.",

area / (scale*scale),

SS.UnitName());

sel.Clear();

sp.Clear();

break;

}

case GraphicsWindow::MNU_SHOW_DOF:

// This works like a normal solve, except that it calculates

// which variables are free/bound at the same time.

SS.GenerateAll(SolveSpaceUI::GENERATE_ALL, true);

break;

case GraphicsWindow::MNU_TRACE_PT:

if(gs.points == 1 && gs.n == 1) {

SS.traced.point = gs.point[0];

SS.GW.ClearSelection();

} else {

Error("Bad selection for trace; select a single point.");

}

break;

case GraphicsWindow::MNU_STOP_TRACING: {

std::string exportFile;

if(GetSaveFile(&exportFile, "", CsvFileFilter)) {

FILE *f = ssfopen(exportFile, "wb");

if(f) {

int i;

SContour *sc = &(SS.traced.path);

for(i = 0; i < sc->l.n; i++) {

Vector p = sc->l.elem[i].p;

double s = SS.exportScale;

fprintf(f, "%.10f, %.10f, %.10f\r\n",

p.x/s, p.y/s, p.z/s);

}

fclose(f);

} else {

Error("Couldn't write to '%s'", exportFile.c_str());

}

}

// Clear the trace, and stop tracing

SS.traced.point = Entity::NO_ENTITY;

SS.traced.path.l.Clear();

InvalidateGraphics();

break;

}

default: oops();

}

switch(id) {

case GraphicsWindow::MNU_WEBSITE:

OpenWebsite("http://solvespace.com/helpmenu");

break;

case GraphicsWindow::MNU_ABOUT:

Message(

"This is SolveSpace version " PACKAGE_VERSION ".\n"

);

break;

default: oops();

}

sys.Clear();

for(int i = 0; i < MAX_UNDO; i++) {

if(i < undo.cnt) undo.d[i].Clear();

if(i < redo.cnt) redo.d[i].Clear();

}

group.Clear();

groupOrder.Clear();

constraint.Clear();

request.Clear();

style.Clear();

entity.Clear();

param.Clear();

BBox box = {};

bool first = true;

for(int i = 0; i < entity.n; i++) {

Entity *e = (Entity *)&entity.elem[i];

if(!(e->IsVisible() || includingInvisible)) continue;

Vector point;

double r = 0.0;

if(e->IsPoint()) {

point = e->PointGetNum();

} else {

switch(e->type) {

case Entity::ARC_OF_CIRCLE:

case Entity::CIRCLE:

r = e->CircleGetRadiusNum();

point = GetEntity(e->point[0])->PointGetNum();

break;

default: continue;

}

}

if(first) {

box.minp = point;

box.maxp = point;

box.Include(point, r);

first = false;

} else {

box.Include(point, r);

}

}

return box;