VS 2008 : Microsecond Timer To Plot Points On Line?
Feb 27, 2012
A couple of options seem to be available to achieve better accuracy and shorter periods than the Timer control in VB allows, however they too seem to have their own unique drawbacks. I am trying to plot (draw) points that are calculated in my VB application and then represent them in real time with an accuracy of a couple percent. If VB can calculate the points in the microsecond time range, would it be reasonable to hang an external pulse source on a usb port and use the "Datachanged" event to count the pulses that will be summed and used to plot the points?Ultimately, this is a machine control application that requires "reasonably precise" timing - ie. CNC type control. The points are scaled and drawn and then step and direction signals are sent out through another USB port.
View 2 Replies
ADVERTISEMENT
Mar 10, 2010
i think this is the right place to post this.i am just learning vb and have spent the last week trying to figure out directx. im using visual basic 2008. i have installed directx i got it to render a blank screen but i cant get it to draw anything. what i have is a program that collects gps coordinates and i want to plot them to screen. i got it to work using gdi+ but i wanted a 3d view. i want a view like a tomtom(without Map) and draw a line where i have been.
this is what i have for creating a vector to plot i think it is creating the vector ok. when i stop in debug and mouseover there is data in it (ie x,y,z Coordinates). i think it is drawing i think i just am not "looking at it"
[Code]...
View 1 Replies
Dec 12, 2011
Picture 1 shows an application that I am currently writing that uses the LineShape and OvalShape out of the Visual Basic Power Packs. As I change the index in the part number combo box the A, B & C dimension change to suit the dimension in the text boxes.
Problem is the limited shapes are fine to draw a router template guide, but they are somewhat limited when it comes to drawing more complex shapes like the router bits that make the shapes in Picture 2. Is there a graphic class that would allow me to plot points and joint the dots like you get in kids colouring in books? Or something a little more adept to complex shapes like curves?
I just spotted something called the Pen Class that I might need to look more into, but not knowing the first thing about graphics. Spotted some advice passel gave in another thread to search vb.net gdi+ tutorial and it looks like the Pen Class might have potential, although I am going to have to revisit some math by the looks of things.
View 19 Replies
Feb 23, 2012
Using the attached code, the goal is to draw a series of 1x1 rectangles to produce an image of a line. The image begins okay at point (0,0) but ends up after 5600 passes through the loop at (1884,5273) instead of at (1965, 5244). To prove the scale factor accurate I also use Drawline to draw the entire line with the same scale factor. Drawline ends up at the correct location (1965,5244).
I've manually checked the calculations with the results as noted. I'm at a total loss to understand what's going on.
' Xc = 1965
' Xp = 0
' Yc = 5244
[Code]....
View 2 Replies
Feb 2, 2012
I have a chartarea, which take too long to print the data when the count is over 100,000 points. is there a better way to show my data in a graph that is faster?
View 2 Replies
Jun 7, 2009
If I have an X-Y plot on a graphics and I also create a verticle line on the same graphics. I want to move the line cross the X-Y plot without disturbing this X-Y plot.
View 7 Replies
Jan 3, 2012
I have a picture in my picturebox. In that picture, I need to draw a straight line between two points and calculate the length of that line (probably in pixels). Is there any suggestion how to do it?
View 2 Replies
Mar 6, 2010
I have a directory containing list of files.
Those files have some list of values as x and y ordered as line by line.
And my question is just I would like to read those files one by one and to plot line graphs based on those values.
View 1 Replies
May 13, 2009
I have a question about drawing lines. Most of the code snippets I've seen approach drawing a line with the mouse down as the startpoint and the mouse up as the endpoint. But I am trying to draw a line by startpoint as
a mouse click and then an endpoint as a mouse click just as you do on a typical cad program.
View 8 Replies
Jul 15, 2010
I have data in data table like below.
I am trying to make graph like below using asp.net chart control (made graph in excel with some test data)
points are X and Y values. lines are linear, exponential, logarithmic and power values.
So how can I make this chart in asp.net (vb.net or c#)?
View 1 Replies
Jul 22, 2010
[Code]...
If someone could post some sample code, in either c# or vb.net that would be much appreciated.
View 1 Replies
Mar 14, 2009
currently i dont have any code to show but i am curently creating an application on a windows mobile 5 device and wondered how i can plot a route manually....ie what i want to be able to do is use the stylus to touch somewhere on the screen and plot that as point A, then touch the screen somewhere else and plot that as Point B (in some sort of database) so that i can review that route afterwards
View 1 Replies
Jul 19, 2009
Currently there are functions to draw line or move to points, commonly known as LineTo(x,y) of MoveTo(x,y). I am wondering if there is also a LineTO or MoveTo function(s) for 3D, i.e. LineTo(x,y,z) or MoveTo(x,y,z).
View 1 Replies
Nov 16, 2009
im having a speed issue with a puzzle solution generator i am developing. its currently running fine.. but i would love to have it tick faster then 1 millisecond.is there any way i could get my code to execute up to uS(microsecond) speed? or even faster heh. i just need a continuous loop faster then a timer that can update the UI, or form?
View 7 Replies
Apr 4, 2010
I need to load and parse a text file and extract data between points on any given line. I can load the file, but it's the parsing that's giving me headaches. e.g. "Phoned Jim and arranged for John to attend site" First I need to search for "Phoned" because the line always starts with that, and then I need to extract "Jim and arranged for John"
[Code]....
View 5 Replies
Apr 20, 2010
is there a way to offset the points in a polygon without having to change each one individually the points are in an array
View 2 Replies
Oct 14, 2011
what i need to do is open a txt file, read line by line, decode each line into an array and display. Now all works ok apart from one line.
sTextLine = objReader.ReadLine() <-- Value of string cannot be converted.
full code here
-------------
Dim objReader As New System.IO.StreamReader(sOpenFile.Text)
Dim sTextLine As New ArrayList()
Dim sText As String = ""
Dim i As Integer = 0
[code]....
View 3 Replies
Oct 7, 2011
I want to make a timer that reads a new line every second from a text file until the last line and then gives a message that there are no more lines. But when i do this he only reads the first line every second.[code]...
View 18 Replies
Apr 6, 2009
Is it possible to use a timer to delay code? For example:
[code]...
View 7 Replies
Feb 15, 2012
The code in question is in place, and it works. The project is all but wrapping up. That being said, I would love to find a better way to run this section of code in an x64 system so I have the solution ready for future projects. What I currently have in place is as follows:
Function TimeDelay(vDelay)
Dim vTimmer, vTargetTime
vTimmer = TimeValue(Now)
[CODE]...
Now I know the easy way to achieve my goal would be to use the timer object in Visual Studio. The problem I ran into is I was developing an automated command line program. As such there was nothing I could attach the timer to (that I'm aware of). I just needed to pause the program for a few seconds to allow the DTSX package (SSIS file if you're not familiar) to load the file before I remove it from the staging folder.
While I was doing research for this issue I came across the old Sleep() function (referenced to a library in kernel32 as I understand it...never used this before either). When I tried to use this on my current system (64-bit system) I received stack overflow errors. Additional research lead to something called wow64, but I did not have enough time to fully research what this is / how to use it.
View 4 Replies
Jul 5, 2010
I am trying to read in a TextBox line by line and take the first 7 characters of each line and output everything in another TextBox.This is what I have so far.
Dim line, lines() As String
lines = TextBox1.Text.Split(Environment.NewLine)
Dim i As Integer = 0
[code].....
View 1 Replies
Dec 26, 2009
I was wondering if there's a way to add points to something defined like this
[Code]....
View 8 Replies
Mar 30, 2011
How can I calculate the bounding rectangle of an ellipse using 4 points on the ellipse?
View 1 Replies
Jul 26, 2010
The picture is a graphicspath drawing a curve through the specified green dots... the red points are the Bezier points that are auto generated by the graphics path.
Basically I want to pass in an array of points (in this case the green dots in the pic) and get an array back of the Bezier (red points) - I want to calculate the location of these points MANUALLY - and not use the graphicspath object to work it out.
It doesn't have to be exactly the same just similar.
View 7 Replies
Jun 14, 2012
Quick question - if I have a timer set to 5000 (5 seconds) and the code in the timer takes longer than 5 seconds to run because of sql stuff, will the timer wait until the code is done till it fires again?
View 3 Replies
Jun 15, 2009
I'm wondering what exactly is the difference System.Timers.Timer and System.Windows.Forms.Timer???
View 4 Replies
Jan 31, 2010
how can i get the points which make a polygon from a region which was derived from the polygon's points?
View 1 Replies
Aug 21, 2009
Why my math keeps getting rounded to 0 decimal points by default?When I do this I get return value of 1
Private Sub Button4_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
Dim numb1 As Integer
numb1 = 100 / 78
MsgBox(numb1)
End Sub
How to get that value up to two decimal points (like 0.00)?
View 1 Replies
Mar 17, 2010
I'm trying to read a file line by line into an array but It skips the item at index:3 I have it msgboxing just to make sure and it wont even touch it.
Dim Btn As Button = DirectCast(sender, Button)
Dim path As String = Application.StartupPath & "Libraries" & Btn.Text.Replace(" ", "_") & ".ipt"
Dim i As Integer = 0
Dim lines As String() = IO.File.ReadAllLines(path)
[code]....
View 3 Replies
Jul 8, 2010
Is there an easy way to consume xml to access any of the nodes directly without reading line by line?Here is a sample set of the xml working with. It contains two records of data. I am trying to find a way to load it so if I wanted to get say PostalCode and say Site SID value quickly.
HTML
<?xml version="1.0" encoding="utf-8"?><MainSite><MainSites Found="201" Returned="20" Status="0"><Site SID="123456"><Relevance>0.985</Relevance><Title>JDoe</Title><DateModified Date="2010-01-29T01:05:00">1/29/2010</DateModified><DateCreated Date="2010-01-29T01:05:00">1/29/2010</DateCreated><PersonalData><Confidential>0</Confidential><Name><First>John</First><Middle>
[code]....
View 12 Replies
