A 2D object has an x/y location, x/y direction, and a velocity.During each update, its location = (location + (direction * velocity)).
This enables it to travel in any and all directions at varying speeds.Using this information, how would you find the angle (in degrees, from 0 to 360) between it's current location, and it's next location, and then use that to determine it's heading (N, S, E, W, NE, NW, SE, or SW)?
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 RepliesHow can I calculate the bounding rectangle of an ellipse using 4 points on the ellipse?
View 1 RepliesImagine a grid of 16x16. All points are integers, there will be no partial points.I have a list of points that fall somewhere on that grid. Since each point is has an integer x,y coordinate, there can be a maximum of 256 points, but normally there will be considerably less than that.What I am trying to do is take a new point N and find the closest point to it in my list of points. The brute force approach is to use the Pythagorean theorem to find the absolute distance from each point on the list to N, and the minimum of all those distances would give me the closest point. However, since there could easily be 100 points, or so, and there is a real advantage to speed in this case, I am looking for a faster way to do this.
The first thing I thought of would be to divide the grid into four quadrants of 8x8. I could then quickly determine which quadrant N was in, and I was able to pre-compute which quadrant each of the points on the list was in. Therefore, I could easily narrow the search down to the points in the same quadrant as N, but that is invalid. If N lies near the boundary of a quadrant, the closest point might not actually be in the same quadrant as N.So what I am looking for is a way to search a list of X,Y points to quickly find the point closest to some other point N. The fact that the search area is 16x16 might help. A certain amount of pre-computation can be done on the points in the list if it helps, but N can fall anywhere in the grid.
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 RepliesI have a strange problem and it's probably a simple fix, but after much research, I cannot seem to find a solution.
I have a DataGridView on which I'm trying to center the column headings, but the result is a left bias in the centering—almost like an indenting problem. I've seen a few posts on this issue on a site or two, but never a solution.
How can I change the Font of a Dialog Heading.
I have triyed setting the Font in the properties window, but that changes the font all the controls on the Dialog, not the Dialog Heading.
I have looked at websites all day trying to understand this can someone point me in the right direction
Have one column heading Called "Monday" under this I want to to have 3 sub headings.
i.e
Monday 3rd August
O/H Stock | Production | Orders
there a way to format a combo box so that the data returned from the database can have a heading. Example:ID Name 1 Franks2 JaneSo basically, programming in the heading information before the data is returned. The only data return from the database is ID numbers and Names, not the heading. Lastly, I did not to use a Rich Textbox because the user needs to make a selection in order to perform deletion
View 6 RepliesHow do I change the text in a DATAGRIDVIEW Column heading? (bound grid) DATAGRIDVIEW.Rows(0).Cells(0).Value = "my text" gives me an error?
View 1 RepliesI have a 150 page word file for work that i need to go through. What i would like to do is automate this since i rather not copy and paste all 150 pages.There are headings 1 2 and 3 in this file. Both Headings 2 and 3 may have body text.What i need to do is copy the Heading 2 and the body text that follows it and paste it in an excel document for some comparison.
Example
Word
heading 1
heading 2
Body text
[code]....
I have manage to take print of the contents of datagrid but now i have one problem when i click on print button it prints the document very fine but The headings of the all columns is not printing here is my code what changes should i made to resolve the issue here is my print class
< Imports System
Imports System.Text
Imports System.Collections
[Code].....
I am using report.rdlc components in my application. I have one report where I have a tablix table embedded in a tablix list. The top of the list above the table contains all the group variables, eg customer name, customer address; the table contains the details, eg order details. I need to display the customer information again when there are too many order details to display on one page and I also need to display the order detail column headings again on the new page. So far I have played around with the Tablix properties and the Static row properties but no matter what I have tried I cannot get the headings to repeat.
View 1 Replieshow can i get the points which make a polygon from a region which was derived from the polygon's points?
View 1 RepliesHow do i create ListObject(Table) in Excel with Table Headings vertically? or any other work around instead of ListObject?
View 1 RepliesI have been trying to figure out how to read paragraph content which exists a heading. The heading itself is part of the table of contents. The heading will have a particular style (say Heading 1). For example: "Introduction" is a entry in Table of content with style Heading 1. I want to read content under heading "Introduction" but not any more content (i.e not content under sub headings of Introduction) I have been trying to do this using styles/style, TableofContent, Paragraphs/Paragraph,Range. Still cannot come up with a effective solution. I am working in VB.NET in VS 2010. I am using the word 2007 object model (office 2007 interop) as [URL]
View 1 RepliesIn window textbox, I'd like to just allow 2 decimal points only. I could set text box only numeric but don't know how to limit 2 decimal points.[code]...
View 3 RepliesI want two decimal points value. I have used this code
lblNo.Text = Math.Round(CDec(txtNo.Text + (txtNo.Text * 0.2)), 2).ToString()
If i have value as 1.32 then its ok but if i have value like 2.3 it shows 2.3 but i want value as 2.30 How can i get this value.
I want to find out the X and Y position of a point which is halfway between a point and another point, in VB.net. Since there is no "direction" property (which would make this much easier...), I have no idea how to do this.
C# code is acceptable as well, though I would prefer vb as it wouldn't require a port.
i have this code in vb and i want to know how to make it to add decimal points
Dim a, b As Integer
a = CSng(TextBox1.Text)
b = CSng(TextBox2.Text)
Dim result As Single
result = a + b
Lb_sum.Text = result
for example if i add 4.2 + 4.4 its show 8 instaid of 8.6
I am drawing an arc within a square or a polygon with the maximum possible radius inside.When the arc is drawn within the boundary of the square or polygon,the arc length will intersect at few points on the square or polygon.How to find the coordinates of the intersecting points of arc at the periphery of the square/ polygon?
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
This thread (Question) is a continuation of a question answered by JohnWein. the original question asked by me in this thread:http://social.msdn.microsoft.com/Forums/en-US/vbgeneral/thread/4d9b44a0-91ed-4f64-a3a2-74afffce2256 an this is the answer:
[Code]...
The question is, in the case of four connections, how can I make sure that all points are connected with minimum number of connections using the same above code?
Is there a way of converting pixels to points? The dimensions in VB are in pixels, but Office COM such as WordApp.Resize are expressed in points. So trying to align app windows is a mess.I guess the ratio of pixels to points varies from one monitor to another(?), so this would need to be calculated at run time.I tried a nifty trick of doing Me.Font.SizeInPoints / Me.FontHeight but that doesnt seem to be quite right or a very sensible way of doing it.
View 2 RepliesI'm trying to create an array of Points but can't seem to get it right.
I can create an array of Integers just fine.
Dim MyArray() as Integer = {1,2,3,4,5}
I have some text I would like to extract from a file. I know what comes before it and what comes after it but the text will be variable. I was thinking read it in line by line until i found the line which is the indicator of the text starting to the indicator that it is ending.[code]...
View 7 RepliesI 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.
How to eliminate decimal points in VB.net.what kind of function should i use.
For example, i have number x= 23.13 i only want to show x= 23 and if i have another number x=23.89 i also only want to show x= 23
[code]...
I'm building a card game called 11-UP. See the game here.I've gotten to the point where I need to make scores show up when the selected cards have a sum of 11. For example, if the card is worth 200 points, then "200" should become visible for about a second and then "float away".
I know I can do this with a timer and the location property. I was thinking of creating an array of 22 timers, one for each card. When the selected cards have a sum of eleven, I enable the timers for each selected card. The timer makes the "score" for that card appear, then move up a few times, then vanish.
Does anyone have a better way to do it? Maybe with only one timer?Also, how could I make the "scores" become more transparent as time advances? I'd like to make them not only float away, but also "disolve."
how can i get the points which make a polygon from a region which was derived from the polygon's points?
View 2 Replies
