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RE: [Visualpython-users] gtkgl library
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From: David S. <dsc...@vi...> - 2002-01-18 20:43:26
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I do not think the backslashes you deleted were "stray backslashes".
They continue a line in a macro expansion by "escaping" the subsequent
line feed character. What you are probably seeing is a file with
Windows \r\n line terminators. The preprocessor sees "\\\r" and
complains.
You can probably fix this by replacing the backslashes and fixing the
line terminators. There's a script that comes with Python to do it;
there are also common tools like 'dos2unix'; and in a pinch you can roll
your own with something like
x = re.sub(r'\r\n',r'\n',open('cvisual.cpp','rb').read())
open('cvisual.cpp','wb').write(x)
In a pinch, just delete the backslashes and cram the whole CALLF macro
onto one line.
Dave
> -----Original Message-----
> From: vis...@li...
> [mailto:vis...@li...] On
> Behalf Of Coleman Mosley MD FACP
> Sent: Friday, January 18, 2002 3:30 PM
> To: David Andersen; Andy Dougherty; Kevin Cole; Andrew
> Williams; Konrad Piwowarczyk
> Cc: vis...@li...
> Subject: Re: [Visualpython-users] gtkgl library
>
>
> Thanks to all of you for your replies. I'm closer but is is
> not working yet.
> With rpm2cpio, it did not seem to translate. I donwloaded
> the ...src.rpm
> and converted it. The original make produced an error that
> there were stray
> "\" in the file cvisual.cpp. This was actually a problem
> listed on the
> vpython archives from last Nov, unfortunately the solution
> for that person
> was to use the binary code. Catch-22 for me.
> So I edited the file mad delted the stray backslashes.
> Below is the new
> error message. I do not know c,c++ beyond minial use so do
> not know how to
> correct the source file.
> Ths current version of this file is also attached.
> Any suggestions or corrections would be appreciated. It
> seems that this is a
> bug for any linux OS (see the nov message if interested)
> trying to compile
> from source rather than binary.
> Thanks for the assistance.
> Coleman
>
>
> Error message:
> g++ -g -I. -I./CXX/Include -I/usr/include/python2.1
> -I/usr/include/python2.1/Numeric `gtk-config --cflags gtk
> gthread` -w -c -o
> cvisual.o cvisual.cpp
> cvisual.cpp: In method `cvisual_module::cvisual_module()':
> cvisual.cpp:111: `create_vector' is not a member of type
> `cvisual_module'
> cvisual.cpp:112: `create_immutableVector' is not a member of type
> `cvisual_module'
> cvisual.cpp:113: `vector_mag' is not a member of type `cvisual_module'
> cvisual.cpp:114: `vector_norm' is not a member of type
> `cvisual_module'
> cvisual.cpp:115: `vector_cross' is not a member of type
> `cvisual_module'
> cvisual.cpp:116: `vector_rotate' is not a member of type
> `cvisual_module'
> cvisual.cpp:124: `create_box' is not a member of type `cvisual_module'
> cvisual.cpp:125: `create_sphere' is not a member of type
> `cvisual_module'
> cvisual.cpp:126: `create_ring' is not a member of type
> `cvisual_module'
> cvisual.cpp:127: `create_cylinder' is not a member of type
> `cvisual_module'
> cvisual.cpp:128: `create_cone' is not a member of type
> `cvisual_module'
> cvisual.cpp:129: `create_arrow' is not a member of type
> `cvisual_module'
> cvisual.cpp:130: `create_hexahedron' is not a member of type
> `cvisual_module'
> cvisual.cpp:131: `create_curve' is not a member of type
> `cvisual_module'
> cvisual.cpp:132: `create_convex' is not a member of type
> `cvisual_module'
> cvisual.cpp:133: `create_frame' is not a member of type
> `cvisual_module'
> cvisual.cpp:134: `create_label' is not a member of type
> `cvisual_module'
> cvisual.cpp:135: `create_faces' is not a member of type
> `cvisual_module'
> make: *** [cvisual.o] Error 1
>
> cvisual.cpp (the stray \ 's removed from the Object what in
> CALLF): #include "cvisual.h" #include "display.h" #include
> "mouseobject.h" #include "gldevice.h" #include "prim.h"
> #include "arrprim.h" #include "label.h" #include "rate.h"
>
> const char * copyright = "Copyright 2000 David Scherer. All Rights
> Reserved.";
>
> Object create_sphere(const Tuple& args, const Dict& kwargs);
> Object create_ring(const Tuple& args, const Dict& kwargs);
> Object create_box(const Tuple& args, const Dict& kwargs);
> Object create_cylinder(const Tuple& args, const Dict&
> kwargs); Object create_cone(const Tuple& args, const Dict&
> kwargs); Object create_arrow(const Tuple& args, const Dict&
> kwargs); Object create_hexahedron(const Tuple& args, const
> Dict& kwargs); Object create_curve(const Tuple& args, const
> Dict& kwargs); Object create_convex(const Tuple& args, const
> Dict& kwargs); Object create_frame(const Tuple& args, const
> Dict& kwargs); Object create_label(const Tuple& args, const
> Dict& kwargs); Object create_faces(const Tuple& args, const
> Dict& kwargs);
>
> #define CALLF(what)
> Object what(const Tuple& args, const Dict& kwargs) {
> return ::what(args,kwargs);
> }
>
> #define CREATEF(what) CALLF(create_##what)
>
> class cvisual_module : public ExtensionModule<cvisual_module> {
> public:
> cvisual_module();
>
> virtual ~cvisual_module() {}
>
> private:
> Object create_display(const Tuple& args, const Dict& kwargs) {
> Display *d = new Display(*new GLDevice());
> return init(d,args,kwargs);
> }
>
> Object handle_event(const Tuple& args, const Dict& kwargs) {
> return Int(::handle_event(*args[0]));
> }
>
> Object shutdown(const Tuple& args, const Dict& kwargs) {
> Display::shutdown();
> return Nothing();
> }
>
> Object waitclose(const Tuple& args, const Dict& kwargs) {
> Display::waitclose();
> return Nothing();
> }
>
> Object allclosed(const Tuple& args, const Dict& kwargs) {
> return Int( Display::allclosed() ? 1 : 0 );
> }
>
> Object rate(const Tuple& args, const Dict& kwargs) {
> if (args.length() != 1) throw TypeError("Incorrect number of
> arguments.");
>
> float freq = Float(args[0]);
> if (freq<=0.0) throw ValueError("Frequency must be positive.");
>
> static rate_timer *rt;
> if (!rt) rt = new rate_timer();
>
> rt->delay(1.0 / freq);
>
> return Nothing();
> }
>
> CREATEF(hexahedron);
> CREATEF(curve);
> CREATEF(convex);
> CREATEF(frame);
> CREATEF(label);
> CREATEF(box);
> CREATEF(sphere);
> CREATEF(ring);
> CREATEF(cylinder);
> CREATEF(cone);
> CREATEF(arrow);
> CREATEF(faces);
> CREATEF(vector);
> CREATEF(immutableVector);
> CALLF(vector_mag);
> CALLF(vector_norm);
> CALLF(vector_cross);
> CALLF(vector_rotate);
> };
>
> cvisual_module::cvisual_module()
> : ExtensionModule<cvisual_module>("cvisual")
> {
> init_platform();
>
> import_array();
>
> Vector::init_type();
> clickObject::init_type();
> mouseObject::init_type();
> Display::init_type();
> Primitive::init_type();
> ArrayPrimitive::init_type();
> Label::init_type();
>
> add_keyword_method("vector", &cvisual_module::create_vector,
> "vector([x,y[,z]]) = [x,y,z]");
> add_keyword_method("constant_vector",
> &cvisual_module::create_immutableVector,
> "constant_vector([x,y[,z]]) =
> (x,y,z)");
> add_keyword_method("mag", &cvisual_module::vector_mag,
> "mag(v) = |v|");
> add_keyword_method("norm", &cvisual_module::vector_norm,
> "norm(v) = v/|v|");
> add_keyword_method("cross", &cvisual_module::vector_cross,
> "cross(a,b) = a
> x b");
> add_keyword_method("rotate",
> &cvisual_module::vector_rotate, "rotate(v,
> angle=radians, axis=[0,0,1]) rotates v angle radians around axis");
>
> add_keyword_method("shutdown", &cvisual_module::shutdown, "");
> add_keyword_method("waitclose", &cvisual_module::waitclose, "");
> add_keyword_method("allclosed", &cvisual_module::allclosed, "");
> add_keyword_method("rate", &cvisual_module::rate, "");
>
> add_keyword_method("display", &cvisual_module::create_display, "");
> add_keyword_method("box", &cvisual_module::create_box, "");
> add_keyword_method("sphere", &cvisual_module::create_sphere, "");
> add_keyword_method("ring", &cvisual_module::create_ring, "");
> add_keyword_method("cylinder",
> &cvisual_module::create_cylinder, "");
> add_keyword_method("cone", &cvisual_module::create_cone, "");
> add_keyword_method("arrow", &cvisual_module::create_arrow, "");
> add_keyword_method("hexahedron",
> &cvisual_module::create_hexahedron, "");
> add_keyword_method("curve", &cvisual_module::create_curve, "");
> add_keyword_method("convex", &cvisual_module::create_convex, "");
> add_keyword_method("frame", &cvisual_module::create_frame, "");
> add_keyword_method("label", &cvisual_module::create_label, "");
> add_keyword_method("faces", &cvisual_module::create_faces, "");
> add_keyword_method("_handleevent",
> &cvisual_module::handle_event, "");
>
> initialize("cvisual module - visual implementation in C++");
>
> Dict d = moduleDictionary();
> d["VectorType"] = Type((PyObject*)Vector::type_object());
> }
>
>
> extern "C"
> void cvisual_DLL initcvisual() {
> new cvisual_module();
> }
>
> _______________________________________________
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> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>
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