Find Line Intersection Point With A Grid Of Lines?

Jun 4, 2009

I am suing VB 2008 express edition.

I am trying to solve this problem since many days. The problem seems to be rather mathematical, but I faced difficulties dealing with Grids and how to store them using visual basic.

[URL]

In my problem, I have a world of 200 x 200 units divided into 4 x 4 grids (Each of 50 units).

There is a line crosses some areas has the coordinates of Point A (Starting Point) of (XA = 12.43, BA = 159.48) and Point B coordinates (Ending Point) of (XB = 112.95, YB = 20.95).

The question is, how can find the length of (A to C1), (C1 to C2), (C2 to C3), (C3 to C4), (C4 to C5) and finally (C5 to B)?

In addition, how can I indicate the square in which the line is inside?

note that the method should work for all conditions (-ve and +ve line slopes) and for different A and coordinates.

View 1 Replies


ADVERTISEMENT

Finding A Point On A Diagonal Line When Have The Start Point And End Point Of The Line?

Feb 14, 2011

I have a Diagonal line drawn on a picture box on my forum and i need to know if the user has clicked the line I have the Start point and End Point of the Line and the mouse x,y location So i basically need to find out if the x,y of the mouse is on the line.

View 2 Replies

Graphicspath And Line Intersection?

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?

View 11 Replies

Calculating Point-to-point Directions On A 2-D Grid?

Mar 11, 2012

I'm trying to calculate the direction between two points on a two-dimensional grid. Actually I want to determine if that vector is within a range of two values. Suppose the grid's origin is 0,0 at the upper left corner, and 0 degrees represents north. I have a point A on that grid. I want to know if a line from point A to point B on the grid is within a range of directions between 111.8 degrees (a little south of east) and 158.2 (a little east of south). Those are approximations; the 111.8 is 90 degrees plus the arctangent of 2/5, and 158.2 is 180 minus that value. I worked out a series of calculations worthy of a medieval astronomer, but I suspect there is a simpler way. I'm going to have to do this for a variety of other vectors, and I'd like to generalize

View 4 Replies

Draw Line From One Point To Another Point?

Apr 10, 2012

I have a DataGridView that will occasionally have a RowError icon displayed in the RowHeader (shown below)I have code that displays a small form when the users mouse moves over the row header or clicks the row header.I would like to draw aline from the top-left of the form to the middle-right of the row header.I basically want to point from the form to the error icon.

View 1 Replies

Sql :: Find A Specific Line Of Text In A Text Document And Insert The Next 37 Lines Of Text Into A Database?

Feb 5, 2011

I have an SQL database, and 50 text files, and Visual Basic 2010 Premimum,I need to find a specific line of text in the text files and then take the next 37 lines of text and save them in my database. I need advice as to point me in the right direction

View 2 Replies

Add Two Line One Line Is Find The Total Of Each Colums In The Last Row And To Find The Grandtotal?

May 1, 2011

I am suppose to only Find the total of each column in the last row. Find the grand total in the last cell (the bottom right corner)Ok i have tried to do the grandtotal but i am not getting what she wants done I have also tried to reverse the arrays but that was wrong to. I am only suppose to add two line one line is find the total of each colums in the last row and to find the grandtotal.

Module Module1
Sub Main()
Dim sum(5, 4) As Integer
Dim row, col As Integer

[code]....

View 1 Replies

Drawing Lines From A Point List?

Sep 24, 2010

Ok so im looking at this code and it cant possibly be right but im not sure how to do what i want.I have made a list of n points. I now want to click a button on my form and use the picturebox paint event to draw my lines between the points in the list.From what i can see i have at least two issues with this code. 1. Nowhere in this snippet do i reference the picture boxes paint event 2. I do not think that the loop i have is how to navigate through the list of Points to make my drawings.

View 14 Replies

Make A Grid With Points That Dots May Be Placed At Just By Clicking That Point?

May 17, 2010

Make a grid with points that dots may be placed at just by clicking that point

View 4 Replies

Word Wrapping - Cannot Select Last Line Of Richtextbox (when A Line Is Wrapped It Becomes Two Lines)

Jul 5, 2009

The following code selects a line ina richtextbox. It works OK expect from one problem:

When a line is biger than the size of the richtextbox, it wraps it. This create a big problem as I can not select the last line of the richtextbox (when a line is wrapped it becomes two lines). When I set wordwrap to off it works just fine

Private Sub RichTextBox1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles RichTextBox1.MouseMove

RichTextBox1.Focus()

[CODE]...

View 3 Replies

Compare Two Lines - Check Whether The Previous Line Is Equal To Next Line?

Jun 6, 2010

i am using while loop. i need to check whether the previous line is equal to next line ...

Try
Dim r As Integer
r = str.IndexOf("action = LGN; description = Success")--- i need to check next line also same content[code].....

View 1 Replies

Drawing Parallel And Perpendicular Lines At A Distance From A Point?

Jul 11, 2011

Step 1 - I plot 4 random points on an image in the picture box

Step 2 - I capture the co - ordinates for all the points

Step 3 - I draw a line from point 1 to point 2 (name it line 1)

Queries :

1) I need to draw a line parallel to line 1 passing through point 3

2) I need to draw a line parallel to line 1 passing through point 4

3) Extend the line from both the ends so that I can draw a perpendicular line passing through all the 3 lines so that it becomes a rectangle

View 1 Replies

VS 2008 - Drawing A Rectangle Snapped To A Grid By Getting Start Point

Dec 27, 2009

I'm drawing a rectangle snapped to a grid by getting the start point(Mouse down e.location) and the end point(mouseup(e.location). The coding I'm having trouble with is having the program determine which way to draw the rectangle(where the location should be, and the height and width.) Now, this would be extremely simple if the user started their rectangle from the top left corner and ended it in the bottom right every time. But you need to be able to drag from all angles. So does anyone have some code lying around that I could look at so I could actually get my rectangles drawn right?

View 5 Replies

How To Change The Style Of Grid Lines.

May 5, 2009

I wanted to change the style, width and color of the grid lines for my X/Y scatter graph.Basically, I want to distinguish the minor grid lines and the major grid lines.

View 1 Replies

Draw A Grid Using Vertical And Horizontal Lines

Dec 7, 2011

I'm trying to draw a grid using vertical and horizontal lines.Both For..To statements work fine when one of them is commented out otherwise, they won't work together. At run, only the first For..To statement is executed.[code]

View 6 Replies

Hiding Grid Lines From Excel Sheets?

Jan 15, 2012

hiding gridlines in excel sheet using VB.NET.I need to hide gridlines while exporting to excel from VB.NET.

View 3 Replies

VS 2008 No Grid Lines On ListView Control?

Jul 6, 2011

The ListView control has a property called GridLines .It's supposed that , once this property is set to True , the control will display its grid lines among its rows and columns . However , I can't do that ! I mean I changed the property to True but still no grid lines ! Of course the View property is set to Details so the grid lines should be activated , but I can't do it ...

View 9 Replies

Manipulate Excel 2007 Chart Grid Lines In Program?

Aug 11, 2009

Using Excel 2007, is it possible to change the transparency of chart grid lines using VBA or VB.NET?

I have the following code, which throws an exception on the last line[code]...

View 1 Replies

Reading A Text File And Dispose In A Data Grid All Lines?

Oct 20, 2010

I'm getting some problems to read a text file with this configuration:

[Code]....

I want to put all 3 lines in a data grid view.

View 1 Replies

Find A Path Get One Object From One Point To Another?

Dec 11, 2010

I started making a game in VB.NET, but I am stuck on the pathfinder. There are round objects. I want to know how to find a path get one object from one point to another (or at least as close as possible) without any collisions.

View 2 Replies

Find Image / RGB Of Point In Webbrowser?

Aug 13, 2010

Ok, so I have a webbrowser that loads a flash page, and there is some text there, which I want to compare to another image.

I have checked for server communication and there is none when you press the button.

So I want to know if it's possible to (A) Find an image on the web browser (B) Find RGBs of (x,y)s on the screen and compare them to their values?

View 8 Replies

Unable To Find An Entry Point

Jul 8, 2010

I have written an application that calls 'My.Computer.FileSystem.SpecialDirectories.Currentm UserApplicationData'. My application is working fine, but one user has reported an issue that has me stumped. When this property is accessed, the following exception is thrown:

"Unable to find an entry point named 'VerLanguageName' in DLL 'version.dll'". The stack trace says that the exception came from Microsoft.Win32.UnsafeNativeMethods.VerLanguageNam e(Int32 langID, StringBuilder lpBuffer, Int32 nSize)

I don't think the problem is with my code. I suspect that there is something wrong with a system-level component on her computer, particularly with the DLL that is mentioned. Is this DLL part of a specific windows component that could be reinstalled/repaired?

View 3 Replies

Working Out The Point Positions Along A Straight Line?

Jul 22, 2010

I have two points (x1, y1) and (x2,y2) and have a straight line between the 2 points, from this I can work out the distance between the 2 points lets say it is 50.What I want to do is increase or decrease the length of the line by a predefined amount lets say 10.So If I increase the line length by 10 (from 50 to 60), What I want to work out is what point(x3,y3) would be at the end of the increased line.Hope this makes sense.I have tried to work out the new point using the angle but it does not work correctly, it does not seems to produce a perfectly straight line and the angle from point (x1,y1) to the new (x3,y3) is not the same as the angle from point (x1,y1 to x2,y2).

This is what I have tried:
:I work out the angle
aAngle =Math.Atan((Y2 Y1) / (X2 X2))

[code].....

View 1 Replies

Find The Angle Between Two Points: Point(0,0) And Point2(26,79)

Aug 21, 2009

find the angle between two points: Point(0,0) and Point2(26,79)

View 10 Replies

Unable To Find Entry Point Method In DLL

Jul 23, 2010

I get this error
Unable to find an entry point named 'UpdateResource' in DLL 'kernel32.dll'.

View 1 Replies

Maze Each Time - Draw Line(+ A {} At Each Connecting Point)?

Aug 3, 2010

i wanta like is like a maze each time u click it exendese the line.the promblem is the walls and well i dont know how to draw line(+ a {} at each connecting point) and have the line not be able to pass the wall and if it pass it, it able to detect the shorts path of lines which u can set it on if off. for the training session.

View 3 Replies

Find Latitude And Longitude Of A Point On Image (scanned Map)?

Apr 28, 2011

I have scanned a map which was in UTM WGS 84 projection system. The scanned map is now in jpg format and loaded into picturebox. If I select a point, how could I know that point's latitude and longitude? How could I integrate a projection system over the image displayed in picturebox?

View 1 Replies

Unable To Find An Entry Point Named 'DoSomething'

Dec 28, 2010

I have a dll that I'm using in my application. But it gives me error when I try to compile my application because it says

"Unable to find an entry point named 'DoSomething' in DLL 'HelperDLL'.dll'.[code]...

View 4 Replies

Forms :: UnBound DataGridView Location - Grid Must Be In The Correct Location According To The Pixel Point?

Dec 19, 2011

i am using an unbound datagridview so i can dynamiclly add rows. all that is working fine. but the grid is not is the location i have coded.. i am using the defualt form as a base then coding the unbound stuff in.. should i just create a blank class file and do everything? the only problem i am having is the grid must bees in the correct location according to the pixel point that i have given it. Right now it is placing the grid at point (0,0) no matter what point is entered on the line for location. so what am i missing??????

View 3 Replies

Unable To Find An Entry Point Named 'CloseHandleA' In DLL 'kernel32'?

Oct 22, 2009

I get this during debug Unable to find an entry point named 'CloseHandleA' in DLL 'kernel32'.I get no compiling errors, I just get this Debug error :/

View 6 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved