I have a form i have made to calculate angles, well, I have now added a check box to reverse the angle and have got it to reverse with no problems. The problem I have is, when I uncheck the checkbox, The line doesnt revert back to normal posistion.Here is the code if someone could point me in the right direction cause I am lost now.
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
[code].....
how to make 45 angle shoot or 45 angle movement of bullet in vb.net
View 1 RepliesI need to reverse a string of words without using the reverse function. This is what I have so far, BUT it only shows the last two letters. For example: if i type "John" it will only give me "ho"
Public Class frmReverse
Dim original As String
Dim New1 As String
[code]....
I need to this without using things we haven't seen in class.
I have a 'user' table, a 'phone number' table and a 'user to phone number map' table. The phone number table stores only unique phone numbers. This way I can take a look at a phone number and see who is using it easily. It is also easy to check if a phone number exists when the user is edited. The question is how I should be checking to see if the phone number should be added to the map. I could loop over the loaded mapped users and check each id. There must be a method that I can use to check like EdmUser.phone_number_map.contains(PhoneNumber). However I cant find anything like this.
View 1 RepliesThe other night i was reading an article on preventing reverse engineering and i found out that you can check to see if their has been a break point that has been added into your applicaiton.How would i check if their has been a break point added?
View 2 RepliesI'm trying to build a new customer data entry page for a db project. One of the features I would like to add is a way to check and see if there have been any new records that have been added that haven't been explicitly saved to the db. If so, when the form_closing events fires I want to evaluate whether or not new entries have been made that weren't saved, and then count the number of rows that haven't been saved.
[Code]...
I have the array dimensioned as public to the form. I populate the array on Form1_Load.When I click the button btnReversingAnArray the first time all are sorted in reverse except for Wendy and it is the last item shown. ie..(The book I am even shows an image of the list Box and their example also shows Wendy as the last item)
Richard
Michelle
Jay
Harriet
Wendy
Then I do nothing else except I click the button btnReversingAnArray again and then it displays correctly.
Wendy
Richard
Michelle
[code]....
I have a program that adds controls on the fly to an auto-scroll panel. When the panel is scrolled (viewing the bottom of the panel for example) and a control is added, it looks like it is added assuming the top left corner of the panel is still at 0,0 when in fact it may be 0,500. To see what I am talking about, create an empty "Windows Forms Application" project and insert the below code into it.
Friend WithEvents Panel1 As System.Windows.Forms.Panel
Friend WithEvents btnAdd As System.Windows.Forms.Button
Dim ButtonCount As Integer
[code]......
Once again my math fails me, as I can't remember how to do this.
If I have two Lines, line1 and line2, and they both have the same X1 and Y1 properties, but different X2 and Y2 properties, how can I get the angle that is created between these lines.[code]...
I am writing a program that needs the user to input three numbers (i.e. sides of a triangle) and based upon those numbers tell the user if the numbers they enter represent a right triangle or not. how to go about this mathematically and care to offer any suggestions on the syntax of the calculations.
View 19 Repliesi have multiple forms in a project and all have statusbar. there is no way to add textbox on status bar but in my previous thread i got the help to add the text box. i created a function in module so that i call that function from all the forms on load and add the textbox on status bar and also add the event on textchange. the function to be called on event change is in individual form (at present)[code]
View 11 Repliesif i use
Dim Gr As Graphics = SomePanel.CreateGraphics()
Gr.Drawline(StartingPoint, EndingPoint)
I want to be able to have a line drawn from point a to b, but be able to rate it 90 degress based on user input so if the user inputs 70 I want it to rotate 30 degree's to simulate a 70 deg relationship to a horizontal line that it touches if that makes any sense. a is starting point b is the user inputs 70 and it draws it at 70 in relationship to the horizontal lineheres the image that i forgot to post above Attached image(s)
how would i paint an image onto a form according to the mouse position? i have a sprite and i want the front of the sprite to always face the mouse cursor.
View 1 Repliesi am having a problem with either my algorithm for restricting an angle between lines. I have a diagram of my problem at the following linK: [URL] In the above diagram, i know the positions of the Points marked on the diagram. The Black lines represent where the lines are currently, i want to move the lines so that they are at right angles to one-an-other (i.e: they are perpendicular) if they are moved to not be so. This is represented by the gray lines.
View 1 RepliesI have a space ship that I want to turn to a destination angle. Currently it works like 90% of the time, but sometimes, it 'jumps' to the destination angle rather than moving smoothly. Here is my code:
a = System.Math.Sin(.destStoppingAngle + System.Math.PI)
b = System.Math.Cos(.destStoppingAngle + System.Math.PI)
c = System.Math.Sin(.msngFacing)
d = System.Math.Cos(.msngFacing)
[Code]...
Is there a transformation function that can be applied to the Graphics.DrawString to output text on an angle?
View 2 Repliesi am trying to get the angle of a line in relation to the x axis. The line is being drawn in a picturebox. So its the Upper right quadrant of the cartesian plane ... but its flipped over the x axis.im using this code
a=pt(1).x
b=pt(1).y
c=pt(2).x
d=pt(2).y
z=math.atan2((c-a),(d-b))*(180/math.pi)
The issue is that the line im drawing is almost parallel to the x axis but its returning a value of roughly 90 degrees .It seems like it is giving me the angle in relation to the y axis, but not being super good at the math myself im not exactly sure what to change here.
Ok. So I have a program I have made to calculate angles. i have a line for true vertical and I need the program to draw the line at a given angle. Basically, if I put 82 in textbox1, I want the program to calculate the cordinates where that line sits on the X axis, The y axis is always picturebox1.height, So the y axis isn't important here, just the x axis.
What would I do to calculate this angle into a visual graphic?
Does anyone know a trick to angle the header of a datagrid at like 45 degrees? The data is short numeric, but the headers are long text. I'd like to duplicate the feature like in excel to angle the text header. BTW, i'm using VB 2008 Express.
View 3 RepliesIs there a transformation function that can be applied to the Graphics.DrawString to output text on an angle?
View 1 RepliesI am going to write a standalone code in VB.net that can measure the angle between two faces in a CAD model opened in solidworks. But i am not allowed to use solidworks API or SDK add-in.
View 5 Repliesi want to create a windows form where i can add names, Employee ids and the projekt they are working on. Clicking a button should add the data to a database. Later id need to retrieve this data.First i was thinking that setting up a sql database and finding functions to access it would be fairly easy however.. Theres obviously more than one way of doing this and im having trouble finding the right angle...
View 13 Repliesfind the angle between two points: Point(0,0) and Point2(26,79)
View 10 RepliesHow can I angle an ellipse by 7 degrees? My intentions are to angle the ellipse so the left side is up and the bottom right is down. [code]
View 1 Replieshow to angle the text headers in a datagrid? I'm trying to duplicate the feature in excel to create a header at a 45 degree angle because the text is long. I'm using VB 2008 express.
View 2 RepliesI Have created a program (see below) that enables you to use you cam. You then draw a line and calculate the angle. The purpose is that I do alot of work with remote control cars and need to acuratley set toe and camber angles, it takes to long with the "old" method So I am creating this little program. ok, so, lets see what I want to do. Well, the first thing I would like to do is draw a line from top to bottom of my picture box dead center of left to right, this is dead center of the cam so the bottom of your item should be posistioned to meet the bottom of the centre line. I then draw a line from bottom to top of the objects angle. I then use the dead center line and the line I drew to calculate the angle.
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Find Gradient and Angle from 2 Data Co-ordinates.
Trying to find the gradient and then the angle.
The program will open a text file and the program will do its stuff.
The text file will be like: I have 2 co-ordinates (X, Y) just contain numbers.[code]...
I just need to know how to find the length of one side of a triangle and one angle aswell. I will always know the other two sides in length and one angle. I have enclosed a diagram.
I need to know length of C and the angle as shown.
I want to make a panel or a picturebox which is vertically rotated by an angle in y-axis. The form's opacity should be 50% but panel opacity should be 100 that is panel should be clearly visible but form should should be 50% transparent.
View 4 RepliesIn member register page, I added email address validation but it only check the email address format, such as .com, .net, .org.If user inputs fake account such as aaabbb01010@gmail.com, how to verify it and return an error?
View 2 Replies