Trigonometry - Create A Rectangle To Use With GraphicsPath.AddArc
Apr 3, 2012
I need to calculate a couple of lengths and an angle, so basic trig. Embarrassingly I can't remember enough of my school trig to sort this out in my head.
Here's the problem pictorially, I need to calculate the two variables in red text (with light blue background) where Radius can anything between 1 and "r.Height /2" and r.Width can be anything between >0 and Radius.
The only other thing I can tell you is ther total width of the dark blue rectangle and the % of that width that r.Width represents - I didn't include it in the picture since it didn't seem relevant.
Ultimately I am trying to create a rectangle to use with GraphicsPath.AddArc.
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Feb 1, 2010
I have written a simple program which receive data from serial port i.e (temperature) and display on a line graph. but i require accumlate the graph data upto 10 minutes on screen. after that it again accumlate next 10 minutes data.[code]....
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Aug 25, 2011
I am attempting to draw and fill a rectangle using percentages passed through the text properties of 4 textboxes. I am attempting to do this in VB 2008. For example:
textbox1, 15%, green
textbox2, 35%, blue
textbox3, 40%, red
textbox4, 10%, orange
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Nov 15, 2011
I am wanting to create a rectangle for two points (vector). I need a function that takes two points and a length and calculates a perpendicular point from line (vector) AB, to a given length.
I found this code, however it doesn't seem to work.
[Code]...
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Jul 26, 2010
i've got a little problem with List(on T) variables.
[code]...
It works perfectly fine. Does anyone know what the problem is?
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Apr 1, 2010
Is there anyway to find out if a graphicspath contains a point like you can with the rectangle object etc?
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Feb 22, 2010
Given a rectangle of width w and height h. and a coordinate x,y in that rectangle I would like to identify which triangle I am within.
i.e. the function should take parameters(x,y) and return a,b,c,d or a zero based number representing that triangle index i.e. (0=A,1=B,2=C,3=D) if they are in that order.
I think this would be something like >= the formula of the red line and >= the formula of the green line?
I'd like to implement this in VB.NET
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Feb 14, 2011
i'm trying to create a flat tabcontrol with a rounded rectangle tab for the selected tab + no border for inactive tabs?basically i'm trying to recreate that ribbon control in a very simplified form as a usercontrol.
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Jan 22, 2010
is it possible to detect overlapping Graphicspath? I have e.g 200 different Graphicspaths created, and I want to filter out which one overlap...
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Dec 29, 2011
I'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()
[Code].....
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Mar 17, 2010
This is my problem...I have created graphicspaths (gp) in Visual Basic...but every gp has a name. So I want to print every name next to the gp. I use GetBounds to get the nearest rectangle around the gp. But like for a circle the name will be quite far away from the gp. Now I want to draw a line from the name to the outline of the gp...can somebody help me with this little part of script?
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Feb 11, 2012
changing the text alignment property. If I change it from left, center to right, you can see all three remain painted. It's as though nothing is being cleared before the next draw.(A screen shot of this is also attached)My best guess is it's the ControlStyles.Opaque(only thing I've changed between when it worked, and when I started to notice it wasn't)... But unfortunately I need this particular style for the transparency effect I'm looking for.
[code]....
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Mar 23, 2012
Im currently in the mid of making a drawing project , and part of it is free drawing using Graphicspath object
now drawing is ok,moving or dragging the drawn path is done using System.Drawing.Drawing2D.Matrix but the problem is using System.Drawing.Drawing2D.Matrix object to scale the graphicspath object results into scaling and moving the drawn graphicspath on the same time ..
any resizing method code is listed below
Public Overrides Sub ResizeShape()
Dim Sqrt As RectangleF = GetBounds()
Dim Dx As Integer = MoveResizeEnd.X - MoveResizeBegin.X
[Code]....
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Dec 3, 2011
This code is to draw rectangle. How can I draw rectangle divided to four rectangle or more
e.Graphics.DrawRectangle(Pens.Coral, 50, 200, 30, 40)
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Jul 26, 2009
I'M creating a kind of photo viewer, and I cannot figure out how to orient the scroll buttons with the photos I want to draw because they all are different sizes.This is really hard to explain so please ask questions if you don't understand.I'M thinking if i could draw every photo on a single rectangle and then the scroll bars will position that rectangle up or down. but is there a way to make a rectangle inside another one so it only shows inside that rectangle?
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Apr 14, 2011
myObject.rect.X = 100
myObject has a property called rect (which is a Rectangle). During runtime I will want to chage the X position of such rectangle, but I am given this error:
Expression is a value and therefore cannot be the target of an assignment.
Then, how am I supposed to change such values?
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Feb 1, 2010
It is my understanding and experience that VB.NET does not perform well with moving graphics from point A to point B in a form. How do I draw a rectangle or a line and move it from point A to point B? Is there a reliable way to do this without seeing a black rectangle around the moving object on every frame? I've tried this with bitmaps before but it doesn't work. I see the frame rendering and it's way to slow. Perhaps there is an animation Control or library?
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Jul 21, 2009
How to take screen of rectangle I know how 2 take screen shot but I can't make it screen shot at coordinates 100, 100, 120,120. [cod]...
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Mar 16, 2012
i want to add a new floating rectangle with an image inside it to my form when i click on a button control and then use a timer control to move it in a straight line across the Form. the problems I'm having are:
1) Drawing and filling the RectangleF on the screen.
2) Animating/moving it from X1,Y1 to X2,Y2
3) Triggering the Drawing and movement with a Button Control
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Oct 15, 2010
Im having trouble with assigning a Rectangle to this constructor
fTrainAdmin = New TrainAdmin( )
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Sep 4, 2010
I have a canvas in the middle of my application with controls around it. I have a socket that recieves Points and saves them in a list.
I draw small 4x4 rectangles on the canvas for the number of points in my list.. say theres 4 points.. theres 4 rectangles.
I want to be able to move the rectangles when the points change with code.
is this possible without storyboards or any 'animation' class?
I have tried:
'cMap.Children.Remove(r)
'Dim nr As Rectangle = New Rectangle() With {.Width = 4, .Height = 4, .Name = "r" & P.Name, .Fill = Brushes.Red}
[Code].....
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Aug 5, 2009
i want to change the cursor style i change from properties of form but there is only limited availability want to change it like square box or rectangular. i have image when i place the picture on picture box the cursor will change to box?
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Aug 8, 2010
In java, if you've ever scripted java, there is a class called "Rectangle" in which will click in the specified Rectangle. Well in a WebBrowser, is it possible to click a certain Rectangle? (Only in the webbrowser), or a certain point
So navigate, wait for DocumentLoad, then click in rectangle?
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May 17, 2011
is this possible to draw a red rectangle about a text box? How?
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Oct 3, 2010
I have a datagridview in my application. and I have created a function for searching different words in datagridview. When the functionfind the word in one cell of datagridview, the cell is selected, but I want to draw a red rectangle in the selected cell when I found the searched value.
I have made my application in visual basic.
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Oct 5, 2009
I am trying to draw a rectangle in a PictureBox (100 x 50)
Using gr As System.Drawing.Graphics = Picbox.CreateGraphics
Dim rect As New System.Drawing.Rectangle(10, 10, 80, 30)
gr.DrawRectangle(Drawing.Pens.Blue, rect)
End Using
From looking at the examples in my book, I "think" it should work, but alas, tis not working - nothing is drawn.
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Apr 29, 2009
Public Class Form1
Private opsets As New List(Of OpSet)
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
opsets.Add(New OpSet(Me, 100, 300))
[code]....
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Mar 12, 2011
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).
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Oct 30, 2011
How can i draw a rectangle in picturebox using coordinate(X , Y) and size of rectangle from textbox?
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Jun 6, 2011
Draw rectangle outside of form?[url]...
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