I'm making a game that needs to hit test a Rect object inside 4 points that basically forms rotated a rectangle. This means I can't use the Rect class's IntersectsWith function to hit test. So my question is: if I have 4 points that creates an imaginary rectangle of any orientation, how can I tell if another rectangle is inside the "fence" so to speak?
View 9 RepliesI have a custom made tooltip form that displays when the user moves the mouse into a cell on a datagridview using the cellmouseenter event.
The tooltip pops up right away, so the user has to move the mouse away to make the tooltip disappear (the tooltip is kind of big, thats whay i had to custom make it).
what i want to do is add a bit of a pause inside the procedure that displays the tooltip.
What i came up with was this:[code...]
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]...
Looking for something like:
dim rect as system.drawing.rectangle
For each point in rect
Debug.print(point.name, point.value)
Next
I am dragging and dropping data from a combobox to a datagrid. I'm using VS2010 VB for a windows app. My problem is that the DragDrop event for the datagrid gives x,y mouse positions that are relative to the physical screen that I am using, not the datagrid. So when I use hittest to calculate the row and column the result is out of the bounds of the datagrid. If I manually drag the form around the physical panel, the x,,y coordinates on the dragdrop event chage accordingly. This is really strange.
View 2 RepliesI need the application version as an integer with decimal points eg: 1.2 At the moment I'm using:
Dim CurrentVersion As Integer
CurrentVersion = My.Application.Info.Version.Major & My.Application.Info.Version.Minor
which just gives me 12.
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 am struggling with coding up a bit of logic.
I have a map which I have created zones which are basically rectangles which have the coordinates sorted
eg
Zone 1
Zone 2
Zone 3
I then want to create circles within the rectangles. So for example
Item1, Zone1
Item2, Zone1
Item3, Zone3
Item4, Zone2
Item5, Zone1
So i would like Item 1, 2 and 5 to show up as three circles and when the mouse cursor floats over them to show it. The item list is dynamic and so I am not sure how to get about with this?
i've got a little problem with List(on T) variables.
[code]...
It works perfectly fine. Does anyone know what the problem is?
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
I've been looking for a simple example to print rotated text, without having to create paths and such, just by applying a temporary transformation to the page. My simple example would be to print "Rotated Text" in a circle patern with the bottom-left corner of the "R" being the anchor point around which the text rotates, something like:
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As _ System.Windows.Forms.PaintEventArgs) Handles Me.Paint Dim poMatrix As System.Drawing.Drawing2D.Matrix Dim poState As System.Drawing.Drawing2D.GraphicsState Dim pfAngle As Single Dim piX As Integer 'x/y position to print Dim piY As Integer Dim poG As Graphics piX = 200
[code]....
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)
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?
View 10 Repliesi'm working on a simple 2d drawing application that allows you to draw, move, rotate and resize shapes such as lines, rectangles, ellipses, polygons and so on. My code for resizing shapes works fine, but only for unrotated shapes. Now i've changed the code to work also with rotation but i have still some problems, for example:
I create a rectangle at a specified location (the upper-left corner of the rectangle) and with a rotation around the location. With my code i can only to resize this shape using the top-left, the middle-right, the bottom-right and the bottom-center hot spots. The problem is when i try to resize the rectangle using the middle left hot spot or the other ones. As you can see in this images the problem is to calculate the new location that the rectangle should have after the resize operation.
[URL]
In my project I have a peculiar requirement for rotating a panel by a standard angel based on mouse drag event. how a panel can be rotated? Is it possible with "Rotate Transform" method?
View 5 Repliesis it possible for an image or picture to be rotated via button click.?
View 10 RepliesI'm trying to rotate a mirror, which I represented by a line across a specific point. I translated the point of rotation to the center, rotated by an angle indicated in a text box and then translated it back to its original position.
Here is my code :
Quote:
HTML Code:
Dim theta As Single
Private Cntr_X_blu_Mirror As Single = 5
[Code].....
I hope the code is good. The problem I encountered is that the line becomes smaller and smaller as I rotate it. and that's bad! Sometimes it even grows longer [I think when I rotate it in the oposite direction!]
Also, when I rotate it at 90 degrees, the rotation does not resembles a 90 degree rotation. It seems to be inclined at 45 degrees instead!
I have a image with a transparent background. I clone it, rotate it, and save it in a picture box. Works fine (in that I can see the original object overlaid on the background image below it). However, the original unrotated image is also superimposed on the .image layer *with* the rotated one. Try as I can, I can't stop it from appearing.
Curiously enough, if I change the image to non-transparent (a .bmp instead of a .gif, for example), I don't have the problem. Of course, I also can't see the background {:<(
Code snippet:
Dim myGraphic As Graphics
Dim m As Image
m = ArtHorImage.Clone
[Code]....
how can i get the points which make a polygon from a region which was derived from the polygon's points?
View 1 RepliesI want to make a panel or a picturebox which is vertically rotated by an angle in y-axis. The form's opacity should be 50% but panel opacity should be 100 that is panel should be clearly visible but form should should be 50% transparent.
View 4 RepliesI know that you can pass a Point array to the DrawImage method of the Graphics object to apply rotation, skewing and flipping, but I'm having trouble figuring out how to calculate the rotation. So far I've got:
Dim radius As Integer = Math.Sqrt((rect.Width / 2) ^ 2 + (rect.Height / 2) ^ 2)
Dim dX As Integer = RadToDeg(Math.Cos(DegToRad(angle))) * radius
Dim dY As Integer = RadToDeg(Math.Tan(DegToRad(angle))) * dX
Dim new_upper_left_corner As New Point(rect.X + (rect.Width 2) - dX, rect.Y + (rect.Height 2) - dY)
This is all just off the top of my head so far, I'm not sure if it's right. How do I calculate the other points on the rectangle, and is there a built-in VB.NET method that's much easier? (Apart from Graphics.RotateTransform, which is slow and also rotates around 0,0.)
I'm using some code to enable me to render rotated text with the TextRenderer.DrawText method. (By default, DrawText can only copy a straight forward x and y transform from a graphics object).
The code (C#) is from: connect.microsoft.com. See below for a VB conversion.The code takes a graphics object, creates a device context and copies the transform matrix from the graphics object. It works, but I'd like, also, to set the TextRenderingHint, so I tried:
<DllImport("gdiplus.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)> _
Public Shared Function GdipSetTextRenderingHint(ByVal graphics As HandleRef, ByVal textRenderingHint As System.Drawing.Text.TextRenderingHint) As Integer End Function And then after the SetClip statement, I place: GdipSetTextRenderingHint(hDC, someHint) This gives me a memory access violation error, so I think I should be using something other than hDC as the argument.
I can get it to work by creating the device context from the original graphics object, and then creating another graphics object from the device context. I then set the hint on the new graphics object. This seems a bit convoluted so I was wondering if it was possible through interop.
[Code]...
how can i correctly position a rotated image in an irregular region picturebox?
View 1 Replies I'm writing a program that print images in full page. I.E, I print image on A4 paper, landscape. When I print an image without rotating it (the image IS landscape), the image uses all the space of the page, and is not cropped. it is OK. The print job is about 1.5 Mb. When I print an image WITH rotating it (the image IS PORTRAIT ), the image uses all the space of the page, and is not cropped. it is OK. The print job is about 28 Mb. The images are about 2000x3000 pixels, and stored in JPEG files (about 2.5 Mb each). I suppose that the 28 Mb should be the "uncompressed" size of the picture, and 1.5Mb, the compressed size...
By the way, When I look at the task manager, my application memory usage grows by job size, which seems to be OK. It grows either 1,5 Mb if no rotation is occured, and 25-30Mb when rotation occured.
Since I can print hundreds of image at once, my print queue will grow abnormaly if I need to rotate all
In 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