demosignal

来自「LastWave」· 代码 · 共 127 行

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#
# Demo file for the signal package
#
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setproc DemoSignalDisp {} "{{{} {Demo that displays different signals and teaches you what you can do with the mouse}}}" {
  StartDemo DemoSignalDisp
}

setproc _DemoSignalDisp0 {} {

  # Generate the signals
  s1 = [sin 100 4]
  s2 = .2*Grand(80)
  s3 = [sin 100 6]
     
  # Display the signals
  disp {{s1 s2}} s3 -..1 -fg 'red' -pen 2 -..3 -curve 'o' -3 -..fv1 -title "This is a title"  -..fv2 -title "This is another title" 
  
  import args 1 System
  
  printf "\nIf you want to learn how these graphs were generated look at the procedure \
'_DemoSignalDisp0' in the file 'scripts/signal/DemoSignal'\n"
}


setproc _DemoSignalDisp1 {} {
printf "You can try the different mouse cursor modes on the graphs of the signals \
just hitting the 'c' key while the mouse pointer being in the graphs \
(there are 3 modes : none, cross-hair (follow the pointer), cross-hair1 (follow the curve)).\n"
}

setproc _DemoSignalDisp2 {} {
printf "You can zoom any signal : use the left and right buttons to zoom in and the middle one to zoom out. \n\
You can change the zoom mode by hitting the 'z' key over any graph. \n\
There are 3 modes : default (just described above), rect (just use the left button and \
do a drag and drop), the y-constrained rect mode (same as rect but the height of the rectangle \
is constrained).\n"
}

setproc _DemoSignalDisp3 {} {
printf "You can perform linear fit on any curve. Zoom in the part of the curve you want to fit, \
and just press the middle mouse button on the curve while holding the shift key down.  \n\
The fit is displayed along with the slope. The line will be constantly redrawn on top of the \
curve (even if you zoom in or zoom out). In order to erase the line just press the left button \
along with the shift key.\n"
}

setproc _DemoSignalDisp4 {} {
printf "You can draw lines on a curve (for hand fitting). Just press the left button with the shift key \
down and drag and drop the mouse. To erase the so-drawn line just press the left button \
along with the shift key (without moving the mouse).\n"
}

setproc _DemoSignalDisp5 {} {
printf "Are you lost ?\n\
To remind you what you can do interactively on a graphic object you can just point to it with the mouse \
and type 'b'... Try it on the title of one graph...\n\
Nice isn't it ? It displays all the 'bindings', i.e., all the interactive actions linked to the graphic object.\n\
For instance, it tells you that you can edit the text using the 'esc' key\n\
If you are ready, type 'b' again to make the help window disappear and go on in the demo.\n"
}

setproc _DemoSignalDisp6 {} {
printf "Do you want to try some other bindings ? \n\
Text editing : put the pointer of the mouse on one of the title (a Text gobject). Just \
press the 'esc' key (you are entering the editing-mode, do not move the mouse out, you \
would leave it right away). Hitting text would add it at the end of the string. The \
down and up arrow change the size of the font and the tab key change the style (normal/bold).\n\
This can be done whenever you want on any Text gobjects (including the labels).\n"
}

setproc _DemoSignalDisp7 {} {
printf "Let's try some more bindings (you can always type 'b' to be reminded of them)? \n\
Moving gobjects : hold down the shift and ctrl keys and press the middle button on a title. \
A simple drag and drop moves it. \n\
IT CAN BE DONE ON ANY GOBJECT, YOU SHOULD PLAY AROUND WITH THAT FEATURE IN ALL THE OTHER DEMOS...\n"
}

setproc _DemoSignalDisp8 {} {
printf "Go with the pointer on the red signal... you should see its full name appearing at the bottom left. \n\
Its full name is 'Window1.fv1.view.1'. \
This corresponds to a path that specifies the hierarchy of the object : it's name is '1' and it is in a View \
object named 'view' which itself is in a FramedView object named 'fv1' which itself is in a Window object named 'Window1' \n\
The other graph signal hierarchy is 'Window1.fv1.view.2' and the bottom one is \
'Window1.fv1.view.3'. \n\
Let's change the color of the red one to blue !\n\
To change one field of a graphic object you must use the 'setgu' command.\n\
The syntax is 'setgu *objectName* -field1 <val1> -field2 <val2> ...\n\
Try the following : \n\
   setgu Window1.fv1.view.1 -fg 'blue'\n"
}  

setproc _DemoSignalDisp9 {} {
printf "Actually, the good news is that you don't need to type the whole hierarchic name of the graphic object !!\n\
You can just call it by it's 'last' name if non ambiguous (if it is, it changes the fields of all the matching objects):\n\
  setgu ..1 -fg 'green' -pen 3\n"
}

setproc _DemoSignalDisp10 {} {
printf  "What are the fields of a signal graphic object ?\n\
It is very easy to know about the fields about any object in LastWave\n\
Just point to it with the mouse and type 'h' \
A Help window will display all the fields along with their values\n\
Have fun changing them!\n\
Typing 'h' again displays all the messages you can send to the object and typing 'h' agin displays the 'bindings'\n\
Typing 'h' again deletes the Help window\n"
}

setproc _DemoSignalDisp11 {} {
printf "Actually the main 'disp' command (that is used to display the graphs or images or ...) \
let you change any field of any graphic object directly (without using 'setgu'). \n\
Try to simply type 'disp' --> it just redraws the graphs. \n\
Now let's say you want to make the \
first signal blue, the third grey, change the text and the color of the title of the \
second graph and add label to the first x-axis !! \n\
You can do it using a single command \n\
    disp -..1 -fg 'blue' -..3 -fg 'grey' -..fv2.title -string 'New' -fg 'green' -..fv1 -xLabel 'Xlabel' \n\
Whenever 'disp' meets a '-gobjectName' all the field messages that follow (up to the next '-gobjectName') are sent to \
the corresponding gobject. \n\
By the way the new xlabel is a text graphic object (Type 'h' on it to see its field values!). \
You can move it or edit it ...\n"
}

help DemoSignalDisp