Wpf - Rotating A Rectangle Gives Very Messy Results?
Jun 25, 2012
i use this process to rotate a rect of 4 borders as corners in wpf:
'find the center
Dim center As New Point(((topRight.Margin.Left - topLeft.Margin.Left) / 2) + topLeft.Margin.Left,
((topLeft.Margin.Top - bottomLeft.Margin.Top) / 2) + bottomLeft.Margin.Top)
[code].....
but i get very messy results?
edit1: i changed the getRotatedPoint function to doubles, and added a radian to degree conversion.
edit2: corrected radian conversion function.
edit3: corrected the center coords, but still some offsetting happens.
My project gets rather big. Now sometimes when loading the design file I get this error. But the project compiles without any problems and runs fine. Some one any idea where to start or what to do?
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'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?
I am trying to allow the user to rotate a jpeg and I know that you can do it pixel by pixel but WIA 2.0 is supposed to have that functionality built into it... When I try to set the filter, exactly like they do in the example.
I have two methods in a class for placing and rotating an array of objects(Pieces) on a Board.pieces have a bounding rectangle and a property called center that is the center point of the rectangle(piece).what i want is to rotate all the pieces in clockwise or counterclockwise direction ,depending on the mouse direction,when the mousebutton is down on any of the pieces other than the center piece and the mouse moves.can anyone modify my code below to achieve this or post some new code that does this. using the rotatepiece() method below in a timerevent with a buttondown event to start the timerrotates all the pieces in clockwise or counterclockwise direction.
Shared PosArray(18) As PointF Shared Increment As Double 'place pieces in rows [order 3-4-5-4-3]
i am going to create one system which is related to test skill and it is in VB.Net and access database it has a question and four answer. both are coming from database,my problem is how do i change answer sequence everytime.whenever user tried for the test, answer sequence should be different.
but this only turns at 90, 180, and 270 degree angles, also allowing flipping, but isn't exactly what I am after. I am trying to make the picture spin randomly at a variety of angles, but even if I can only get 45 degrees is better than just having 90 degree ones.
However I have only been able to find the above example in my searches.
I am trying to solve the issue that I posted about in the game programming forum about the animated dice. It seems that this is a very difficult thing to achieve, so I am going at this in an obscure way. My idea behind this is to have a timer set the images in a picture box according to random counters (which I have working). Then I plan on making the image rotate along with the timer (which is where I am at now). Then I plan on having the picture box move across the screen along with the timer (bouncing off the sides)...I think that this might be a bit better when trying to achieve an "authentic rolling dice" without actually having to do everything in 3d.
I'd like to rotate only one of the shapes in an animation, but the rotatetransform method applies this rotation to the whole view. I have several shapes which I want to remain stationary, and just one that should be rotated. I've been trying to use containers but so far this hasn't helped. This is visual basic on XP, using .net gdi+, system.drawing. I'm using translatetransform to establish a rotation center.
Private Sub ellipse() myBuffer.Graphics.Clear(Color.White) myBuffer.Graphics.TranslateTransform(200, 400) If plus_clicked Then
I had an assignment that I had done, which has been turned in, I was able to get it to graph, but it when it reaches the right side of the screen it drops off, when it is is adjusted using the velleman controls it jumps back up, hw would I fix this.
Here are the instructon for the assignment:
Write a program tat rads two analog inputs from a velleman board and plots the values on a rotating graph. The number of value plotted horizontally should be specified in a text box. Label the graphs vertical values in at least three places. Print the current voltage reading for each input in it's own lable. The graph should auto scale to fille the graph vertically and horizontally.
The two things that I couldn't get to work is the graph drops off the chart and I was unable to place the vertical values in three places.
Here is my code:
'Date: April 10, 2012 'Progammer: Cathy Hjelm 'Progam: wk8-1
I want to make a small logo in the upper corner of a Form rotate.
I've seen on some forums that they have small avatars dancing and such, so I imagine it would be posible to make a tiny image rotate by it self up in the corner in a Form.
Does anyone know how to do this? Link to tutorial, codesnippets etc..
Ps. The goal is to make it smooth. Not turn 4 x 90 degrees.
I'd like to be able to graphically represent a position in a 3D graph and be able to rotate the grid to match a certain perspective. I've looked for tutorials online, but they all mention how to import or create common file types. I don't want or need to do this. I just need to know where to begin. I have the DirectX SDK, but I'm not sure where to start with it and need some direction.
i have a game in which i move my character (the picturebox) using the keys W, S, A, D....how do i rotate the image inside the picturebox to where it always follows the cursor?
I have a panel in my form and 5 buttons. All the buttons are docked to the top. Also in the panel I have a treeview ctl that is set to fill. What I am trying to accomplish is when you push one of the buttons the remainder move to the bottom and the treeview ctl fills between the buttons.
First I am using 'Microsoft Visual Studio 2010' and am making a 'windoms forms application'. I am wishing to implement a way of changing the text colour through out the whole application. I have managed to put on a customisable background using
Quote:
CODE:
I know I'll have to change the 'BackColor' bit but I don't know what to. Is there something that turns all text on the form one colour or do I have to do it label by label?
Also I am can't figure out how to rotate labels to display text at a 60 degree angle (to display along the edge of an equilateral triangle) And for the triangle I have drawn it using lines which move independently from each other, is there anyway to 'group' these lines together so they are fixed.
Code: PictureBox1.CreateGraphics.FillRectangle(Brushes.Yellow, 0, 0, 5, 10) But rotated 30 degrees? Is this possible and i am not very good at math and all other
In VB2005 GDI+, it's not too difficult to get zooming and panning working together, or rotating and panning. But I am finding it very difficult to get all three functions working in coordinatioin. The code below is the nearest I have reached so far. It's a working example on a standard Windows Form, but please supply your own image. The user can drag the image with the left mouse button, and toggle wheel zooming or rotating by tapping the space bar. Both zooming and rotating work. But the stationary centre of zooming or rotating (marked by a red cross in the example) remains relative to the image.
I am trying to make a random shift scheduling application for a rotating workforce that must satisfy the following basic requirements: 3 shifts (8 hours each) per day (Morning, Afternoon, Night), 2 workers per shift work a maximum of 7 consecutive days and rest a minimum 1 day. 9 Total workers separate in 5 supervisors and 4 operators, and 2 part time workers (1 supervisor and 1 operator) for covering the possible absences of 9 standard workers. Total days off are 8 days per month (normal sequence 2,2,4) and the vacation days are 22 per year. A basic rule is that the shift must cover from 2 supervisors, or 1 supervisor and 1 operator. 2 operators are forbidden.
I have a form that allows users to select file and then it reads the contents, parses the data and then executes a sql insert statement to add it to a database. What I am having issues with is showing real-time results. Currently, I have the import operation take place on the import form within the OnLoad event. The problem with this is it only shows the final results instead of the results real-time. Is there anyway to do this without creating a seperate thread and delegates?
I have to create an image that is to mimic a single clock rotating hand within a square area,and the user has to choose the width and speed of the rotation and the direction.i managed to create the square area with a hand inside,with this codes and variables,
(Dim Mygraphics As graphics = e.graphics mygrqaphics.Draw Rectangle(pens.color x1,x2,y1,y2)
mygraphics draw line(pens.color,x1,x2,y1,y2),now i have to find codes and variables to rotate the hand or line within a square area.one point remaining constant the other moving.
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.
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?
