Example: Golden spiral More...
Public Member Functions | |
GoldenSpiral (const Options &opt) | |
Actual model. More... | |
GoldenSpiral (GoldenSpiral &p) | |
Constructor for cloning p. More... | |
virtual Space * | copy (void) |
Copy during cloning. More... | |
virtual FloatVar | cost (void) const |
Cost function. More... | |
virtual void | print (std::ostream &os) const |
Print solution coordinates. More... | |
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ScriptBase (const Options &opt) | |
Constructor. More... | |
ScriptBase (ScriptBase &e) | |
Constructor used for cloning. More... | |
virtual void | compare (const Space &home, std::ostream &os) const |
Compare with s. More... | |
Protected Attributes | |
FloatVarArray | f |
The numbers. More... | |
Related Functions | |
(Note that these are not member functions.) | |
int | main (int argc, char *argv[]) |
Main-function. More... | |
Additional Inherited Members | |
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static std::ostream & | select_ostream (const char *sn, std::ofstream &ofs) |
Choose output stream according to sn. More... | |
template<class Script , template< class > class Engine, class Options > | |
static void | run (const Options &opt, Script *s=NULL) |
Example: Golden spiral
The Golden Spiral is a logarithmic spiral whose growth factor is the golden ratio .
It is defined by the polar equation:
where
To get cartesian coordinates, it can be solved for and
in terms of
and
. By setting
, it yields to the equation:
with
The tuple is related to the position for
and
on the curve.
and
are positive numbers.
To get reasonable interval starting sizes, and
are restricted to
.
Definition at line 77 of file golden-spiral.cpp.
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inline |
Actual model.
Definition at line 83 of file golden-spiral.cpp.
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inline |
Constructor for cloning p.
Definition at line 99 of file golden-spiral.cpp.
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inlinevirtual |
Copy during cloning.
Definition at line 104 of file golden-spiral.cpp.
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inlinevirtual |
Cost function.
Definition at line 108 of file golden-spiral.cpp.
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inlinevirtual |
Print solution coordinates.
Reimplemented from Gecode::Driver::ScriptBase< BaseSpace >.
Definition at line 112 of file golden-spiral.cpp.
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related |
Main-function.
Definition at line 122 of file golden-spiral.cpp.
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protected |
The numbers.
Definition at line 80 of file golden-spiral.cpp.