I have an assignment and I have to calculate the area of a circle. I have my textboxes and buttons but I don't know how to write the codes and I have followed the directions and the example in my book which is microsoft visualbasic 2008 step by step.
View 2 RepliesI'm writing a .NET program for an engineering company. Their specification is to find the number of holes (either of same or different radius) on a rectangular plate and then to find the area of the rectangle and also area of the circle inside that rectangle. It's not essential that the circle touches the rectangle.
View 1 Repliescalculate the gps coordinates of points of a specific distance, namely 22 feet apart, on the circumference of a circle. I know the beginning gps coordinates and the radius. I am pretty sure the haversine, or the speherical law of cosines has the answer, but its been a long time since I have used any trig formulas and I cant figure it out. I am using decimal degrees and am programing in this vb.net.
View 3 RepliesI am trying to implement a controlling design logic that prompts the user for a length and the area to calculate until he or she enters a number less than zero in the length to end.So far I have it where I believe it�s doing the calculations but it�s not ending when I input a number less than zero or zero.
Sub Main()
' Declare Length As Float
Dim Length As Double
' Declare s, c, t As Float
[code]....
im trying to make a a rogram that will calculate the area of a rectangle based on the lenght and
width given by the user
[code...]
how can i calculate the width of a circle at top + 1/3 height & top + 2/3 height?
View 5 RepliesI have developed a program which continuously draws a circle using a timer. Now every time the circle gets displays it flickers and which is because i have used me.refresh. Is there any other way to avoid this flickering.
Here is my code
Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As EventArgs) Handles Timer1.Tick
Me.sweepAngle += 1
If Me.sweepAngle = 360 Then
[CODE]....
Trying to set the viewable area to a smaller screen area and have it cycle through as the person moves using collision detection to move the backgroudn image. Here is the start but its off to a bad start so far.
Public Class Form1
Dim Mapx As Integer = 600
Dim Mapy As Integer = 2000
[code]....
Basically the forum size is set to 600x2000 but the client should only allow you to view 600x600. I want it to add +1 once you "collide with a invisable box I'll add and this will redraw the screen.
I designed a form and managed to fit graphics inside it. Picture box is 465 pixels high. Form1 is 500 pixels high. SnapShot of the screen verifies that the 500 pixel height is the overal height. It includes the upper Bar and lower frame. Is there an instruction to set the From's inner pixel size and not overal?
View 2 RepliesI am trying to calculate the number of years for my calculate age event handler, however i am apparently missing a method or whatnot because im trying to calculate the age , can anyone suggest help on this. I need to subtract years to get my age but when i try the birthdate.Subtract (currentDate) method i get an error about not able to convert from LONG?
So below is what I have.
Private Sub btnCalculateAge_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculateAge.Click
Dim currentDate As Date
Dim BirthDate As Date
Dim Age As Long
[CODE]
I guess thats what I need to do, Im trying to allow the user to right click on the top of my form, and my custom Context Menu Strip is displayed, not windows context menu strip. I guess somehow i would need to get the size and draw a rectangle on the non client area and see if the user has right clicked in that rectangle? if so how would I get the area of the non client area?
View 7 RepliesPrivate Sub PictureBox1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles PictureBox1.Paint
e.Graphics.DrawEllipse(Pens.AliceBlue, New Rectangle(New Point(0, 0), New Size(PictureBox1.Width, PictureBox1.Height)))
End Sub
I am trying to draw a circle in VB.Net, .Net version 4.Nothing shows up in the paintbox.
When I change the color of the circle it creates a new circle. How do I get it to change the color of the existing drawn circle?
View 6 RepliesI have created a program that Draw a circle and then you can move it around a picturebox. I have made code so that it changes colour but instead of changing the colour of the circle already been drawn it creates a new circle which when you overlap the original circle with the new circle it cuts part of it.So what I wanted it to do when I change the colour of the circle it changes the colour of the circle already been drawn instead of creating a new circle.
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Also I can't use the X and Y coordinate input to move the circle to the entered coordinates.
I drew a filled circle using: pixFractal.CreateGraphics.FillEllipse(RedBrush, MyPoint.X, MyPoint.Y, 16, 16)
I expected the circle to be centered on MyPoint. Instead, it seemed to be drawn as though centered in a square whose upper left corner was at MyPoint.
I am making a whiteboard program. So far I managed to generate the ability to draw lines and other small things. The problem is that I want to make a circle that follows the cursor to display what a dot there would look like. I am aware of the creategraphics property of picture boxes, but when I do that the circle stays there and a new one is generated where the mouse is now (an expected result). My question is, is there a way to draw and delete circles as the mouse moves. Also, is there a more efficient way of doing this. I did try using the OvalShape found in the power pack, but I cannot figure out how to display that over the picture box, when I right click the oval nothing happens.
View 2 RepliesOkay, so I am making a whiteboard program. So far I managed to generate the ability to draw lines and other small things. The problem is that I want to make a circle that follows the cursor to display what a dot there would look like. I am aware of the creategraphics property of picture boxes, but when I do that the circle stays there and a new one is generated where the mouse is now (an expected result). My question is, is there a way to draw and delete circles as the mouse moves.
View 3 RepliesUsing Visual Basic 9 I want to draw a circle and gradientFill the circle using FillGradientStyle = Centraland a FillStyle = SolidWith the same results as can be achieved in The Power Packs 3.0 OvalShape.
View 1 RepliesI searched this forum for the answer before posting this and from what i have noticed there is no "simple" way ofcourse "simple" definition varies from one person to another
my definition of simple is something like this Line(x1,y1,x2,y2,color) or something like that.[code]...
How can I program a quarter portion of a circle, with points A and B ??
How can I code the red line on the image?
User launches the application, enters width of circle, then enters width and height of rectangle and presses the button. Then app draws the circle with rectangle inside of it (if it fits). App should output the coordinates x1;y1 , x1;y2 , x2;y1 , x2;y2 (corners of rectangle) somewhere on form and would be great if it could post those coordinates on x and y axes (optional).
View 23 Replieshow to draw the circle at the below position, i have marked where i should get the angle. And i m also sending my piece of code.
Plz tell how to draw the circle at 180 degree on x-axis, For green circle. And later i should draw at the same place semi circle, dnt know how to draw them... i.e on green circle at zero n 180 degrees.
I am having some trouble drawing a circle that is constant when the program runs. right now I am able to create one of my clock hands (that is going counterclockwise), but I can't figure out how to draw the circle of the clock, any suggestions? [Code]
View 4 RepliesI'm trying to draw a partial circle with GraphicsPath, starting at the top of the document, going counter-clockwise 270 degrees, so that it will look like a clock at 3 o'clock. The following is a simple, partial translation of my function.
Dim DestImage As New Bitmap(Source.Width, Source.Height)
Dim g As Graphics = Graphics.FromImage(DestImage)
Dim gp As New GraphicsPath()
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can i have codes of drawing a circle using visual basic 2005
View 3 Repliesi need a code the will draw a circle on a picturebox that will have the border color blue and the inside color black. i also need the same thing but for a square.
View 16 RepliesI would like to be able to move mouse in a circle, given the height and width...
View 2 RepliesI am trying to do a do while loop to make a circle draw itself resized by 1 each time 50 times. I just dont know how to define the numbers that make up the circle size properties. here is my simple code
Me.CreateGraphics.DrawEllipse(pencolor, 135, 125, 5, 5)
I would like to just make a simple do while loop to adjust the 5,5 by +1. I am really new to programming and any help will be excelent. If I knew the property name of the 2 numbers I need to change I could declare them as a letter H & W and just do while
H,W is < 56
H+1
W+1
if this makes any sense?
I have a picture and I have defined a circle on it(as a rectangle) . This will not always be on the same place and i need a way to get all the points that is in the circle. If it it will always be a near perfect circle.
View 7 RepliesI have to make a game "connect four". I'm having some trouble with the 2-dimensional Array that needs to be created in order to play the game. Firstly there is a function which makes rectangle shaped pictureboxes into circleshaped boxes. Secondly there is a method which is supposed to create a 2-dimensional array with circle's but i can't get it to work. When I run it it only gives me 1 circle at the location which i have given it. I don't know how to get it to repeat. Here's the code.
[Code]...