two sinewave variants
This commit is contained in:
parent
bd6e3647d5
commit
bebe4cd3bf
@ -19,11 +19,18 @@ def write_file(args, geom):
|
|||||||
|
|
||||||
def sinewave(args):
|
def sinewave(args):
|
||||||
INTERVAL = 0.1
|
INTERVAL = 0.1
|
||||||
TAIL_LEN = 7
|
|
||||||
SINE_LEN = 7
|
if args.numwaves == 2:
|
||||||
TAILS = np.zeros(int(TAIL_LEN / INTERVAL))
|
TAIL_LEN, SINE_LEN = 7, 7
|
||||||
sin_range = np.arange(-pi/4, SINE_LEN, INTERVAL)
|
TAILS = np.zeros(int(TAIL_LEN / INTERVAL))
|
||||||
amplitude = (np.sin(sin_range * pi / 2) + 1)*2
|
sin_range = np.arange(-pi/4, SINE_LEN, INTERVAL) * pi / 2
|
||||||
|
amplitude = (np.sin(sin_range)+1)*2
|
||||||
|
else:
|
||||||
|
TAIL_LEN, SINE_LEN = 3.5, 3.5
|
||||||
|
TAILS = np.zeros(int(TAIL_LEN / INTERVAL))
|
||||||
|
sin_range = np.arange(-pi/4, SINE_LEN - pi/8, INTERVAL) * pi / 2
|
||||||
|
amplitude = np.sin(sin_range) + 1
|
||||||
|
|
||||||
y = np.concatenate([TAILS, amplitude, TAILS])
|
y = np.concatenate([TAILS, amplitude, TAILS])
|
||||||
x = np.arange(-TAIL_LEN - pi/4, SINE_LEN + TAIL_LEN, INTERVAL)
|
x = np.arange(-TAIL_LEN - pi/4, SINE_LEN + TAIL_LEN, INTERVAL)
|
||||||
lines = LineString(zip(x*10, y*10))
|
lines = LineString(zip(x*10, y*10))
|
||||||
@ -47,6 +54,7 @@ def parse_args():
|
|||||||
parser.add_argument('-o', '--outfile', metavar='<file>', required=True)
|
parser.add_argument('-o', '--outfile', metavar='<file>', required=True)
|
||||||
subparsers = parser.add_subparsers()
|
subparsers = parser.add_subparsers()
|
||||||
sine = subparsers.add_parser('sine', help='Sine wave')
|
sine = subparsers.add_parser('sine', help='Sine wave')
|
||||||
|
sine.add_argument('--numwaves', choices=[1, 2], type=int, help='Number of waves')
|
||||||
sine.set_defaults(func=sinewave)
|
sine.set_defaults(func=sinewave)
|
||||||
rect = subparsers.add_parser('rect', help='Rectangle')
|
rect = subparsers.add_parser('rect', help='Rectangle')
|
||||||
rect.add_argument('--bounds', type=float, nargs=4, metavar=BOUNDS)
|
rect.add_argument('--bounds', type=float, nargs=4, metavar=BOUNDS)
|
||||||
|
@ -239,7 +239,8 @@ Let's zoom in to the river crossing area for some of the algorithms; see
|
|||||||
table~\ref{tab:comparison-crossing} on page~\pageref{tab:comparison-crossing}.
|
table~\ref{tab:comparison-crossing} on page~\pageref{tab:comparison-crossing}.
|
||||||
|
|
||||||
Both {\VW} and {\DP} simplify "blunt" bends (a "blunt" bent looks like a cutout
|
Both {\VW} and {\DP} simplify "blunt" bends (a "blunt" bent looks like a cutout
|
||||||
from a large circle, see figure~\ref{blunt-bent} on page~\pageref{blunt-bent}.
|
from a large circle, see figure~\ref{fig:blunt-bent} on
|
||||||
|
page~\pageref{fig:blunt-bent}.
|
||||||
|
|
||||||
\begin{figure}[h]
|
\begin{figure}[h]
|
||||||
\centering
|
\centering
|
||||||
@ -287,18 +288,18 @@ of the least developed aspects of automatic line generalization, according to
|
|||||||
\cite{miuller1995generalization}. {\WM} encoded this process to an algorithm.
|
\cite{miuller1995generalization}. {\WM} encoded this process to an algorithm.
|
||||||
|
|
||||||
Imagine there are two small bends close to each other, similar to
|
Imagine there are two small bends close to each other, similar to
|
||||||
figure~\ref{pic:sinewave} on page~\pageref{pic:sinewave}, and one needs
|
figure~\ref{fig:sinewave} on page~\pageref{fig:sinewave}, and one needs to
|
||||||
to generalize it. The bends are too large to ignore replace them with a
|
generalize it. The bends are too large to ignore replace them with a straight
|
||||||
straight line, but too small to retain both and retain their complexity.
|
line, but too small to retain both and retain their complexity.
|
||||||
|
|
||||||
\begin{figure}[h]
|
\begin{figure}[h]
|
||||||
\centering
|
\centering
|
||||||
\includegraphics[width=52mm]{sinewave}
|
\includegraphics[width=52mm]{sinewave}
|
||||||
\caption{Example river bend that should be generalized}
|
\caption{Example river bend that should be generalized}
|
||||||
\label{pic:sinewave}
|
\label{fig:sinewave}
|
||||||
\end{figure}
|
\end{figure}
|
||||||
|
|
||||||
When one applies {\DP} to figure~\ref{pic:sinewave}, either both bends remain,
|
When one applies {\DP} to figure~\ref{fig:sinewave}, either both bends remain,
|
||||||
or become a straight line, see table~\ref{tab:comparison-sinewave} on
|
or become a straight line, see table~\ref{tab:comparison-sinewave} on
|
||||||
page~\pageref{tab:comparison-sinewave}.
|
page~\pageref{tab:comparison-sinewave}.
|
||||||
|
|
||||||
@ -330,6 +331,9 @@ page~\pageref{tab:comparison-sinewave}.
|
|||||||
\label{tab:comparison-sinewave}
|
\label{tab:comparison-sinewave}
|
||||||
\end{figure}
|
\end{figure}
|
||||||
|
|
||||||
|
Ideally, the double-bend in figure~\ref{fig:sinewave} should be normalized to a
|
||||||
|
larger single-bend, similar to figure~ on page~.
|
||||||
|
|
||||||
\section{Related Work and future suggestions}
|
\section{Related Work and future suggestions}
|
||||||
\label{sec:related_work}
|
\label{sec:related_work}
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user