Moved most of the source into a src/ subdirectory

The SolveSpace top-level directory was getting a bit cluttered, so
following the example of numerous other free-software projects, we move the
main application source into a subdirectory and adjust the build systems
accordingly.

Also, got rid of the obj/ directory in favor of creating it on the fly in
Makefile.msvc.

Makefile.am

@@ -2,157 +2,7 @@
 
 ACLOCAL_AMFLAGS = -I ac-aux
 
-AM_CPPFLAGS = $(FLTK_CXXFLAGS)
-
-if WIN32
-AM_CPPFLAGS += \
-	-I$(srcdir)/extlib/libpng \
-	-I$(srcdir)/extlib/si \
-	-I$(srcdir)/extlib/zlib
-endif
-
-bin_PROGRAMS = solvespace
-
-icons_src = \
-	icons.h \
-	icons-proto.h
-
-BUILT_SOURCES = $(icons_src)
-
-solvespace_SOURCES = \
-	$(icons_src) \
-	bsp.cpp \
-	clipboard.cpp \
-	confscreen.cpp \
-	constraint.cpp \
-	constrainteq.cpp \
-	describescreen.cpp \
-	draw.cpp \
-	drawconstraint.cpp \
-	drawentity.cpp \
-	dsc.h \
-	entity.cpp \
-	export.cpp \
-	exportstep.cpp \
-	exportvector.cpp \
-	expr.h \
-	expr.cpp \
-	file.cpp \
-	generate.cpp \
-	glhelper.cpp \
-	graphicswin.cpp \
-	group.cpp \
-	groupmesh.cpp \
-	mesh.cpp \
-	modify.cpp \
-	mouse.cpp \
-	polygon.h \
-	polygon.cpp \
-	request.cpp \
-	sketch.h \
-	solvespace.h \
-	solvespace.cpp \
-	style.cpp \
-	system.cpp \
-	textscreens.cpp \
-	textwin.cpp \
-	toolbar.cpp \
-	ttf.cpp \
-	ui.h \
-	undoredo.cpp \
-	util.cpp \
-	view.cpp \
-	srf/boolean.cpp \
-	srf/curve.cpp \
-	srf/merge.cpp \
-	srf/ratpoly.cpp \
-	srf/raycast.cpp \
-	srf/surface.h \
-	srf/surface.cpp \
-	srf/surfinter.cpp \
-	srf/triangulate.cpp
-
-if HAVE_FLTK
-solvespace_SOURCES += \
-	fltk/xFl_Gl_Window_Group.H \
-	fltk/xFl_Gl_Window_Group.cxx \
-	fltk/fltkmain.cpp \
-	fltk/fltkutil.cpp
-
-solvespace_LDADD = $(FLTK_LDSTATICFLAGS) -lGLU
-endif
-
-if WIN32
-solvespace_SOURCES += \
-	win32/freeze.h \
-	win32/freeze.cpp \
-	win32/w32main.cpp \
-	win32/w32util.cpp
-
-if MINGW
-solvespace_LDFLAGS = \
-	-llibpng \
-	-lzlib \
-	-luser32 -lgdi32 -lcomctl32 -ladvapi32 -lshell32 \
-	-lopengl32 -lglu32
-else
-solvespace_LDFLAGS = -link \
-	-libpath:$(srcdir)/extlib/libpng libpng.lib \
-	-libpath:$(srcdir)/extlib/zlib zlib.lib \
-	user32.lib gdi32.lib comctl32.lib advapi32.lib shell32.lib \
-	opengl32.lib glu32.lib
-endif # MINGW
-endif # WIN32
-
-icons = \
-	icon.ico \
-	icons/angle.png \
-	icons/arc.png \
-	icons/assemble.png \
-	icons/bezier.png \
-	icons/char-0-check-false.png \
-	icons/char-1-check-true.png \
-	icons/char-2-radio-false.png \
-	icons/char-3-radio-true.png \
-	icons/circle.png \
-	icons/constraint.png \
-	icons/construction.png \
-	icons/edges.png \
-	icons/equal.png \
-	icons/extrude.png \
-	icons/faces.png \
-	icons/hidden-lines.png \
-	icons/horiz.png \
-	icons/in3d.png \
-	icons/length.png \
-	icons/line.png \
-	icons/mesh.png \
-	icons/normal.png \
-	icons/ontoworkplane.png \
-	icons/other-supp.png \
-	icons/parallel.png \
-	icons/perpendicular.png \
-	icons/point.png \
-	icons/pointonx.png \
-	icons/rectangle.png \
-	icons/ref.png \
-	icons/same-orientation.png \
-	icons/shaded.png \
-	icons/sketch-in-3d.png \
-	icons/sketch-in-plane.png \
-	icons/step-rotate.png \
-	icons/step-translate.png \
-	icons/symmetric.png \
-	icons/tangent-arc.png \
-	icons/text.png \
-	icons/trim.png \
-	icons/vert.png \
-	icons/workplane.png
-
-tables = \
-	bitmapextra.table.h \
-	bitmapfont.table.h \
-	font.table.h
+SUBDIRS = src
 
 exposed = \
 	exposed/CDemo.c \
@@ -163,19 +13,13 @@ exposed = \
 	exposed/slvs.h
 
 EXTRA_DIST = \
-	$(icons) \
-	$(tables) \
 	$(exposed) \
 	COPYING.txt \
 	Makefile.msvc \
 	extlib/build-fltk.sh \
-	png2c.pl \
-	pngchar2c.pl \
 	tools/Makefile \
 	tools/ttf2c.cpp \
-	wishlist.txt \
-	win32/manifest.xml \
-	win32/resource.rc
+	wishlist.txt
 
 optional_dist = \
 	extlib/libpng/png.h \
@@ -211,36 +55,4 @@ dist-hook:
 		exit 1; \
 	fi
 
-if MAINTAINER_MODE
-
-icons.h: $(icons) $(srcdir)/png2c.pl
-	$(PERL) $(srcdir)/png2c.pl $@ icons-proto.h $(srcdir)
-
-icons-proto.h: icons.h
-	@exit 0
-
-bitmapextra.table.h: $(icons) $(srcdir)/pngchar2c.pl
-	$(PERL) $(srcdir)/pngchar2c.pl $(srcdir) >$@.tmp
-	mv -f $@.tmp $@
-
-endif # MAINTAINER_MODE
-
-run-valgrind: solvespace$(EXEEXT)
-	@test -z "$$VALGRIND_OPTS" || echo VALGRIND_OPTS = $$VALGRIND_OPTS
-	valgrind \
-		--tool=memcheck \
-		--verbose \
-		--track-fds=yes \
-		--log-file=vg.%p.out \
-		--num-callers=50 \
-		--error-limit=no \
-		--read-var-info=yes \
-		--leak-check=full \
-		--leak-resolution=high \
-		--show-reachable=yes \
-		--track-origins=yes \
-		--malloc-fill=0xac \
-		--free-fill=0xde \
-		./solvespace$(EXEEXT)
-
 ## end Makefile.am

Makefile.msvc

@@ -20,11 +20,18 @@ DEFINES = \
 # We build with /MT for compatibility with the SpaceWare library, and to
 # avoid a needless dependency on a C runtime DLL.
 #
-CXXFLAGS = /nologo /W3 /MT /I. /Iextlib\libpng /Iextlib\si /Iextlib\zlib /Zi /EHs  # /O2
+CXXFLAGS = /nologo /W3 /MT /Isrc /Iextlib\libpng /Iextlib\si /Iextlib\zlib /Zi /EHs  # /O2
 
-HEADERS = win32\freeze.h ui.h solvespace.h dsc.h sketch.h expr.h polygon.h srf\surface.h
+HEADERS =  src\dsc.h \
+           src\expr.h \
+           src\polygon.h \
+           src\sketch.h \
+           src\solvespace.h \
+           src\srf\surface.h \
+           src\ui.h \
+           src\win32\freeze.h
 
-OBJDIR = obj
+OBJDIR   = obj
 
 W32OBJS  = $(OBJDIR)\freeze.obj \
            $(OBJDIR)\w32main.obj \
@@ -94,37 +101,41 @@ all: $(OBJDIR)\solvespace.exe
 	@echo solvespace.exe
 
 clean:
-	del /q obj\*
+	-rmdir /s /q $(OBJDIR)
 
 $(OBJDIR)\solvespace.exe: $(SSOBJS) $(SRFOBJS) $(W32OBJS) $(RES)
 	$(CXX) $(DEFINES) $(CXXFLAGS) /Fe$(OBJDIR)\solvespace.exe $(SSOBJS) $(SRFOBJS) $(W32OBJS) $(RES) $(LIBS)
 	editbin /nologo /STACK:8388608 $(OBJDIR)\solvespace.exe
 
-{.}.cpp{$(OBJDIR)}.obj::
+{src}.cpp{$(OBJDIR)}.obj::
+	@if not exist $(OBJDIR) mkdir $(OBJDIR)
 	$(CXX) $(CXXFLAGS) $(DEFINES) /c /Fo$(OBJDIR)\ $<
 
-{srf}.cpp{$(OBJDIR)}.obj::
+{src\srf}.cpp{$(OBJDIR)}.obj::
+	@if not exist $(OBJDIR) mkdir $(OBJDIR)
 	$(CXX) $(CXXFLAGS) $(DEFINES) /c /Fo$(OBJDIR)\ $<
 
-{win32}.cpp{$(OBJDIR)}.obj::
+{src\win32}.cpp{$(OBJDIR)}.obj::
+	@if not exist $(OBJDIR) mkdir $(OBJDIR)
 	$(CXX) $(CXXFLAGS) $(DEFINES) /c /Fo$(OBJDIR)\ $<
 
-$(RES): win32\$(@B).rc icon.ico
-	$(RC) /fo$@ win32\$(@B).rc
+$(RES): src\win32\$(@B).rc src\win32\icon.ico
+	@if not exist $(OBJDIR) mkdir $(OBJDIR)
+	$(RC) /fo$@ src\win32\$(@B).rc
 
-$(OBJDIR)\glhelper.obj: bitmapextra.table.h bitmapfont.table.h font.table.h
+$(OBJDIR)\glhelper.obj: src\bitmapextra.table.h src\bitmapfont.table.h src\font.table.h
 
-$(OBJDIR)\textwin.obj: icons.h
+$(OBJDIR)\textwin.obj: src\icons.h
 
-$(OBJDIR)\toolbar.obj: icons.h
+$(OBJDIR)\toolbar.obj: src\icons.h
 
 !IFDEF PERL
 
-icons.h: icons\*.png png2c.pl
-	$(PERL) png2c.pl $@ icons-proto.h
+src\icons.h: src\icons\*.png src\png2c.pl
+	$(PERL) src/png2c.pl $@ icons-proto.h
 
-bitmapextra.table.h: icons\*.png pngchar2c.pl
-	$(PERL) pngchar2c.pl >tmp.$@
-	move /y tmp.$@ $@
+src\bitmapextra.table.h: src\icons\*.png src\pngchar2c.pl
+	$(PERL) src/pngchar2c.pl >$@.tmp
+	move /y $@.tmp $@
 
 !ENDIF # PERL

configure.ac

@@ -3,7 +3,7 @@
 AC_PREREQ([2.59])
 AC_INIT([SolveSpace], [2.1], [jwesthues@cq.cx], [solvespace])
 AC_CONFIG_HEADERS([config.h])
-AC_CONFIG_SRCDIR([solvespace.cpp])
+AC_CONFIG_SRCDIR([src/solvespace.cpp])
 AC_CONFIG_AUX_DIR([ac-aux])
 AC_CONFIG_MACRO_DIR([ac-aux])
 
@@ -115,7 +115,7 @@ fi
 ## Wrap it up
 ##
 
-AC_CONFIG_FILES([Makefile])
+AC_CONFIG_FILES([Makefile src/Makefile])
 AC_OUTPUT
 
 cat <<EOF

src/Makefile.am

@@ -0,0 +1,195 @@
+## src/Makefile.am
+
+AM_CPPFLAGS = $(FLTK_CXXFLAGS)
+
+if WIN32
+AM_CPPFLAGS += \
+	-I$(top_srcdir)/extlib/libpng \
+	-I$(top_srcdir)/extlib/si \
+	-I$(top_srcdir)/extlib/zlib
+endif
+
+bin_PROGRAMS = solvespace
+
+icons_src = \
+	icons.h \
+	icons-proto.h
+
+BUILT_SOURCES = $(icons_src)
+
+solvespace_SOURCES = \
+	$(icons_src) \
+	bsp.cpp \
+	clipboard.cpp \
+	confscreen.cpp \
+	constraint.cpp \
+	constrainteq.cpp \
+	describescreen.cpp \
+	draw.cpp \
+	drawconstraint.cpp \
+	drawentity.cpp \
+	dsc.h \
+	entity.cpp \
+	export.cpp \
+	exportstep.cpp \
+	exportvector.cpp \
+	expr.h \
+	expr.cpp \
+	file.cpp \
+	generate.cpp \
+	glhelper.cpp \
+	graphicswin.cpp \
+	group.cpp \
+	groupmesh.cpp \
+	mesh.cpp \
+	modify.cpp \
+	mouse.cpp \
+	polygon.h \
+	polygon.cpp \
+	request.cpp \
+	sketch.h \
+	solvespace.h \
+	solvespace.cpp \
+	style.cpp \
+	system.cpp \
+	textscreens.cpp \
+	textwin.cpp \
+	toolbar.cpp \
+	ttf.cpp \
+	ui.h \
+	undoredo.cpp \
+	util.cpp \
+	view.cpp \
+	srf/boolean.cpp \
+	srf/curve.cpp \
+	srf/merge.cpp \
+	srf/ratpoly.cpp \
+	srf/raycast.cpp \
+	srf/surface.h \
+	srf/surface.cpp \
+	srf/surfinter.cpp \
+	srf/triangulate.cpp
+
+if HAVE_FLTK
+solvespace_SOURCES += \
+	fltk/xFl_Gl_Window_Group.H \
+	fltk/xFl_Gl_Window_Group.cxx \
+	fltk/fltkmain.cpp \
+	fltk/fltkutil.cpp
+
+solvespace_LDADD = $(FLTK_LDSTATICFLAGS) -lGLU
+endif
+
+if WIN32
+solvespace_SOURCES += \
+	win32/freeze.h \
+	win32/freeze.cpp \
+	win32/w32main.cpp \
+	win32/w32util.cpp
+
+if MINGW
+solvespace_LDFLAGS = \
+	-llibpng \
+	-lzlib \
+	-luser32 -lgdi32 -lcomctl32 -ladvapi32 -lshell32 \
+	-lopengl32 -lglu32
+else
+solvespace_LDFLAGS = -link \
+	-libpath:$(top_srcdir)/extlib/libpng libpng.lib \
+	-libpath:$(top_srcdir)/extlib/zlib zlib.lib \
+	user32.lib gdi32.lib comctl32.lib advapi32.lib shell32.lib \
+	opengl32.lib glu32.lib
+endif # MINGW
+endif # WIN32
+
+icons = \
+	icons/angle.png \
+	icons/arc.png \
+	icons/assemble.png \
+	icons/bezier.png \
+	icons/char-0-check-false.png \
+	icons/char-1-check-true.png \
+	icons/char-2-radio-false.png \
+	icons/char-3-radio-true.png \
+	icons/circle.png \
+	icons/constraint.png \
+	icons/construction.png \
+	icons/edges.png \
+	icons/equal.png \
+	icons/extrude.png \
+	icons/faces.png \
+	icons/hidden-lines.png \
+	icons/horiz.png \
+	icons/in3d.png \
+	icons/length.png \
+	icons/line.png \
+	icons/mesh.png \
+	icons/normal.png \
+	icons/ontoworkplane.png \
+	icons/other-supp.png \
+	icons/parallel.png \
+	icons/perpendicular.png \
+	icons/point.png \
+	icons/pointonx.png \
+	icons/rectangle.png \
+	icons/ref.png \
+	icons/same-orientation.png \
+	icons/shaded.png \
+	icons/sketch-in-3d.png \
+	icons/sketch-in-plane.png \
+	icons/step-rotate.png \
+	icons/step-translate.png \
+	icons/symmetric.png \
+	icons/tangent-arc.png \
+	icons/text.png \
+	icons/trim.png \
+	icons/vert.png \
+	icons/workplane.png
+
+tables = \
+	bitmapextra.table.h \
+	bitmapfont.table.h \
+	font.table.h
+
+EXTRA_DIST = \
+	$(icons) \
+	$(tables) \
+	png2c.pl \
+	pngchar2c.pl \
+	win32/icon.ico \
+	win32/manifest.xml \
+	win32/resource.rc
+
+if MAINTAINER_MODE
+
+icons.h: $(icons) $(srcdir)/png2c.pl
+	$(PERL) $(srcdir)/png2c.pl $@ icons-proto.h $(srcdir)
+
+icons-proto.h: icons.h
+	@exit 0
+
+bitmapextra.table.h: $(icons) $(srcdir)/pngchar2c.pl
+	$(PERL) $(srcdir)/pngchar2c.pl $(srcdir) >$@.tmp
+	mv -f $@.tmp $@
+
+endif # MAINTAINER_MODE
+
+run-valgrind: solvespace$(EXEEXT)
+	@test -z "$$VALGRIND_OPTS" || echo VALGRIND_OPTS = $$VALGRIND_OPTS
+	valgrind \
+		--tool=memcheck \
+		--verbose \
+		--track-fds=yes \
+		--log-file=vg.%p.out \
+		--num-callers=50 \
+		--error-limit=no \
+		--read-var-info=yes \
+		--leak-check=full \
+		--leak-resolution=high \
+		--show-reachable=yes \
+		--track-origins=yes \
+		--malloc-fill=0xac \
+		--free-fill=0xde \
+		./solvespace$(EXEEXT)
+
+## end src/Makefile.am