I just finished creating a program where you find the area of a 5 sided polygon. But not I want to actually draw the polygon given the coordinates
Private Sub PI_Estimation_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
Dim myGraphics As Graphics
[code].....
On click, I'd like this piece of code to create new polygon, shown in multiples with different coordinates and colors, sizes and orientation. Color and polygon in multiples works. My issue is I'd like to add more code that will allow each of the multiple polygon created scaled randomly and rotated. How to keep the polygons inside the canvas?
So far looks like this when user clicks start: [URL]
Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles startButton.Click
Dim endCount As Integer = random.Next(1, 10)
Dim plotPoint As New Point
For count = 1 To endCount
[Code] .....
how do you draw or place a polygon/line within another polygon e.g. a circle within a triangle.
View 5 Replieshow can i get the points which make a polygon from a region which was derived from the polygon's points?
View 1 RepliesI am trying to build a coordinates system but am having trouble with how to.. What I have sofar is a textbox that allows the user to enter a length. This length is user defined but never smaller then 610 in length since this is the minimum unit size we use to build timber frames. The overall length of a timber frame is infinite (well not really, but it is for what I want) the timber frame has beams every 610mm set apart from each other (this is a legal requirement) so I want my vb.net to set coordinates for each beam at intervals of 610 then write that coordinates system to a text based *.SCR file
[Code]...
I want to translate MouseArgEvent.Location (x,y) coordinates into my custom graph coordinates. Mouse Y coordinates increase from top to bottom while my grid's y value increase from bottom to top. Given my following code, I would need to create 21,500 separate conditional expression for 100(y) x 215(x) possible coordinate locations for my grid.
Sub OnMouseMove(ByVal e As System.Windows.Forms.MouseEventArgs)
If e.X > 48 AndAlso e.X < 50 AndAlso e.Y > 397 AndAlso e.Y < 399 Then
MessageBox.Show("about 0,0")
[code]....
Develop a Company Logo application that allows users to draw shapes. The application should provide the user with RadioButtons to allow the selection of the next shape to be drawn. TextBoxes should be provided to allow the user to enter coordinates (X and Y coordinates) of the shape, the width and the height of the shapes. Users should also be able to change the shape�s colour.my question is how to allow the user to enter coordinates (X and Y coordinates) of the shape, the width and the height of the shapes and change the shape�s color from combo box. pro help
below is my code:
Public Class Form1
Dim mycolor As Color
Dim mypen As Pen
Dim mygraphics As Graphics
[code]....
I have a Geo-tagged snapshot (photo) captured with a my digital cam.
I want to read world coordinates (real coordinates) upon click on any pixel on this photo.
I'm having an issue when passing an object of type Dictionary(Of Int16, Polygon) as an argument to a backgroundworker so the background worker is able to access the Polygons in the Dictionary. I'm getting the typical "The calling thread cannot access this object because a different thread owns it" message.[code]...
View 2 Replieshow can i calculate the 13 points on the polygon (see image)?
the 2 points either side of the centre points
are +/- width or height * 0.2761423749154
i have 4 known points, topLeft, topRight, bottomRight, + bottomLeft.
the polygon won't always be a regular rectangle as it is in the image
If I have some polygon lat lon coordinates stored in sqlserver db. how would I query it to see if a point was in contained within a polygon?
View 2 RepliesI have a collection of latitudes and longitudes and I'll be grabbing sets of these and want to draw a polygon based on them.The datasets won't be the outline so will need an algorithm to establish which ones make up the outline of a polygon containing all the latitudes and longitudes supplied. This polygon needs to be flexible so the polygon can be concave if the points dictate that.
My code below produces a horrible looking polygon. As explain in my first post I want to create a nice concave or convex polygon based on the latlng's provided.Just need a way of plotting the outer latlngs.
function initialize() {
var myLatLng = new google.maps.LatLng(51.407431, -0.727142);
var myOptions = {
[code]....
I'm making a game for a school project We've created a character that moves around the screen and creates blocks behind him as he moves around.We want to make it so that when the character moves from one edge of the screen to another, it fills the screen. So in order to do this we have a Points array that stores every point the character touches on his way to a wall.We then fill the Points array with "formsurface.fillPolygon(Points)"Now I'm wondering is there anyway we can retrieve all the points that are WITHIN or INSIDE the Points array we made? ( remember the points array simply contains the outline or the path the character created, we're filling inside that outline)
View 1 Repliesi dont know how to do this.i need to create a macro to use on microsoft excel to calculate the area of any polygon. my problem is similar to this one: [URL]..but de vb code is not working for me.in attach i send the excel page.i also have to calculate the coordenates of the "center of mass", Cx and Cy using diferents functions.
View 1 Replieshow can i inflate an array of points which describe a polygon?
View 1 RepliesI'm working on a small freeware application in Visual Studio 2008 Standard that will match geographic data to a geographic position. For this I need some mathemathical functions and one of them is how to detect if a point is inside a polygon. There's a great solution for this from the Microsoft team at: [URL]
but it is in a different programming language that I do not know anything about. How can I use these functions in my program? I'm afraid that if I try to rewrite them in Visual Basic I'll make mistakes that I can't detect. To be complete, I'm not using screen graphics so I really need a mathemathical solution.
I'm trying to write a simple game ui, it is grid/tile based, and i have the grid built using grid column and row definitions and I'm successfully placing objects in various grid locations. I am currently stuck as trying to build the player object. I want a single object reference to represent the various components of the players piece.
Currently I am using a polygon to represent the piece on the grid. Eventually I want to replace this with images or something. I want to add in properties for what weapon and armor it has equipped I want properties for health
Essentially in code i want something like this
dim player1 as new playerobject
player1.polygon.points = 0,0 60,30 0,60
player1.health = 100
[Code]....
I can instantiate all this as separate variables etc, but I'd like to have a singular reference that contains all the variables, properties, objects, controls etc.
I'm using vb .net in vs 2010 (and no, I'm not looking to write in something else)
I'm trying to write a simple game ui, it is grid/tile based, and i have the grid built using grid column and row definitions and I'm successfully placing objects in various grid locations.I am currently stuck as trying to build the player object. I want a single object reference to represent the various components of the players piece.
Currently I am using a polygon to represent the piece on the grid. Eventually I want to replace this with images or something.I want to add in properties for what weapon and armor it has equipped I want properties for health Essentially in code i want something like this
dim player1 as new playerobject
player1.polygon.points = 0,0 60,30 0,60
player1.health = 100
player1.weapon = "axe"
etc
I can instantiate all this as separate variables etc, but I'd like to have a singular reference that contains all the variables, properties, objects, controls etc.I'm using vb .net in vs 2010.
I've created a polygon shape and filled which fills blue on startup.Upon toggling a check box it should be filled yellow.It doesn't go yellow (unless i step through in debugging).
[Code]...
I am writing a program wherein the user draws shapes by clicking a button for the desired shape and then clicking on points on the drawing area. I cannot figure out how to store four clicked points to create a foursided polygon. I read many articles that say use the "mousedown" command and store points in a list, I have tried but it's not working for me. To summarize, I need the user to click the polygon button, go to the drawing area, click four points and have a foursided polygon created.
View 6 RepliesThis is mis system projectcell painting in datagrid when error while calculating datai have made a datagrid with 7 columns firstly 7 r with values 0 at beginning when user enters input then in the datagrid with first 6 columns & 7 one with total i.e. total (column 7) = col1 + ...to Col7now, when the total entered by user is different from total it should match itif same then no cellpainting is done
View 4 RepliesHas anyone ever noticed that when adding many rows to a datagridview the scroll bar has a problem painting and the user can no longer use it? How do I fix this?
View 3 RepliesTheir system executes a DB query everytime they select something, causing performance issues. So I thought that I would read the superset of data into a datatable, and then whenever they want subsets, simply run against the datatable. I've done some testing and the performance difference is HUGE.The problem is how the screen paints on postbacks. The screen will temporarily go blank then the data will appear as expected. Of course, they don't want the blanking of the screen each time they select a subset of data.
I am currently using a repeater to handle the display of data due to the nature of what they want to display. A datagrid might be a good alternative for sorting functions, but I think it would still blank the screen when it data binds.How do I go about filling the repeater without blanking the screen? Is it even p[ossible? Logically I would think not but I don't have the experience. Or perhaps I can fill a datagrid without blanking the screen on the postback?I'd rather not have to go out to the database every time, but if that's the way to go then I can live with that.
I downloaded Visual Basic 2010 Express and got familiar with it over several days but the following issues are stumping me:
Where are the art instructions to be found? The ones featured in the examples are pretty basic. I've looked all over but can't find anything.
Drawing on top of a RichTextBox control has always been a pain due to the Paint event, and related OnPaint() method being suppressed. Here is a bit of code that gets around this issue.The following derived RichTextBox will use a seperate NativeWindow control to hook into the message stream of the RichTextBox, listen for the WM_PAINT message, and then raise the Paint event on the RichTextBox for you.In this way, it is possible to use the Paint event handler of the RichTextBox control to paint on top of the control after it has performed its default rendering of the text.The following code is an initial implementation but appears to be pretty solid so far. 'Based in part on code located at: [URL]
''' <summary>
''' A RichTextBox object which raises, and utilizes, its own Paint event.
''' </summary>
''' <remarks></remarks>
[Code].....
I may continue to expand upon this idea, but I wanted to get the initial code out here as this seems to be the minimum to get the painting functionality to work.Reed Kimble - "When you do things right, people won't be sure you've done anything at all"
in the painteventargs of the form, i've got something like this: [Code] i'm getting a very cool gradient effect from red to yellow, but why is that the case? shouldn't the 1x1 portion be totally red? and the remaining pixels be totally yellow?
i'm not trying to paint a 1x1 portion in my form, im trying to know why e.Graphics.DrawImage(bm, 0, 0, 100, 100) doesn't draw a 1x1 red portion on my form through the code provided above. my understanding is that 0,0 specifies the point to draw the image. bm specifies the image actually drawn, which is 1x1 px. and 100,100 specifies the allowed space for the graphics to draw, if this is correct, the first pixel should be red and the remaining 9999 pixels should be yellow but they aren't.
I'm not sure if this should be here or in the Graphics subforum. Basically, I want to simulate the monitor(s) going black (it's an immature April Fool's Day prank). My initial thought was to create a borderless form that is the size of all the monitors with a backcolor of black. Then, slowly, increase the opacity of the form. This approach works great as far as the visual effect I'm trying to achieve...the problem is that it's a form. If the form is on top - while you can *see* windows below it - you can't interact with them. I'm wondering if there is a way to create the same visual effect without using a form so that the PC will remain usable while the monitor appears to slowly be getting darker?
View 1 Repliespainting only part of text in cells like my column is NAME and values are bahushekh ,bahushekh1,msdn ,abc etc for that column. Now I want to paint only bahu in Red if it exists rest part will be black
View 2 RepliesI have a panel that has a BackgroundImage set to "zoom". Because of this, the image usually has some grey "letterboxing" showing the panel beneath the BackgroundImage. I want to paint on the Graphics Object of the Panel using its paint event handler. Is there a way to contrain my painting to just the image part of the panel? Is there a way to find the rectangle that the BackgroundImage is occupying within the panel?
P.S. I don't want to make a graphics object from the BackgroundImage because I'm already using that for some other "paint layers".
I've never had a need minimize my application until today. But when I did, and I brought it back up, it looked... strange. Which makes me think it has something to do with a paint problem... or something.
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