Iv been making a Tron game for the past week and im stuck.What is the best way to draw the trail behind the "bike".
i have two arrays called StartPoint() and Endpoint(). Both of the arrays are constantly updated with every change of direction.
I need the trail to follow the bike and once the player changes direction, it needs to stop and start in the new direction.
I don't want to spam the forum with questions, so I'll just ask a two questions I can't figure out in one thread since they all involve a specific task I'm trying to create I'm trying to make something identical to a map-editor for a game. Right now I'm just learning the basic functions of drawing on bitmaps. I'll show you what I got right now and then tell you what I'm trying to achieve:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim mySource As Rectangle
Dim myDestination As Rectangle
[code]....
So my map size is 1000x1000. When I press the button, it creates the map, draws 250 tiles(pixels) in the top left corner of the map, and then displays it on my form. Now to my questions: How can I zoom into certain X, Y positions on the map? After I zoom into the map, how can I call a function when I highlight a tile(pixel), and then another function when I click on a certain tile(pixel)?
I'm writing a game in VB 2005 Express and at the moment it involves using the drawimage method to first draw a background and then various sprites onto my form every time a timer ticks. It's all double buffered so there's no flicker or anything but it just goes very slowly, how to speed it up. I've come across the term blitting (bitblt), which seems like it would be useful, but haven't been able to work out exactly what it is, whether it can be used in this version of vb, how to use it etc.
Here's my code (or at least an approximation of the relevant bits seeing as the whole thing is rather long):
Public Class Form1
Dim BackgroundImg as Image 'plus all of my sprite images declared
Dim Mybuffer As BufferedGraphics
Dim MyContext As BufferedGraphicsContext
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....
Does anying one have any codes or suggests
View 16 RepliesI was hoping that the various controls for WinForms in VB.Net 2008 would have a property such as OldValue and NewValue that I could pull from the Change property.
I'm wanting to write a generic code that will save the OldValue, NewValue, name of field and name of table, and date of change directly to a simple Audit table.
Items aren't changed often, but we need to be able to trace the history of changes to certain fields. I've got the code written for saving to the table, but I'm not finding anything that will show me the two values I need.
I get the NewValue from the changed property but how can I locate the OldValue for date/time pickers, text boxes, check boxes are the main items on the forms.
How To Create Audit Trail Of Record Changes In A Form In Vb Net?I get the NewValue from the changed property but how can I locate the OldValue for date/time pickers, text boxes, check boxes are the main items on the forms.
View 1 RepliesI have a form with a picture box that moves on form load with timer but the picture shows a trail when moving
Private Sub TimerBottomBun1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TimerBottomBun1.Tick
Dim Loc As Point
[Code]......
I want to make a 30-day trail in visual basic 2008 i found this software Active Lock Software but how do i use it.
View 12 RepliesUsing a timer, am making a rectangle platform move from left to right. The problem is that it leaves a trail of itself and I believe this is down to refreshing or something. here is the timer code if your interested:
If shaperet = False Then
Timer2.Start()
platform.Left -= 4
[Code]......
I am looking for a best practice to provide users of my ecommerce website with a breadcrumb trail. Current Site Setup:
[Code]...
I'm trying to create a 'trial version' for a software of mine, currently it is pay-only. Basically the most efficient way I can think of is to simply change the startup form of the trial version after 15 days. The new startup form will simply be a request to register.
-How can I change the startup form after 15 days?
-How can I ensure that this cannot be changed afterwards (so it isn't easily pirated).
draw individual pixels, without resorting to drawing a line and setting it's length to 1. Is there an actual ability to draw a pixel that is just 1 pixel big?
View 2 RepliesI have a little experience with drawing using GDI+ in VB.NET, but not so much with more complex shapes. All I ever used were lines and rectangles, and the occasional ellipse.I need to draw an 'arc' like this:I can specify the starting angle (0 in the picture), ending angle (angle from the horizontal (left side)), and the starting and ending radius, and I'm sure any other things I need can be calculated from that.The problem is that I have no clue which drawing function to use. Can I do it using FillPath, or FillClosedCurve, or? Of course, I could create a pie shape and then draw a second pie shape (slightly less radius) on top of that to make it appear like it's a single shape, but what if it needs to be 'transparent'? I don't want it to draw a solid shape on top.
View 17 RepliesI need some code to draw a resizable, draggable rectangular cursor (or selection box) on a picturebox. I found some excellent code (albeit rather old) that does just that, but on a form rather than a picturebox. I have tried converting the code - basically moving things to the picturebox events (Paint, MouseDown, MouseMove etc). It nearly works but leaves a trail behind it when you move or resize the cursor. In other words, the selection rectangle is not being erased before being drawn in the new position.
Is there some fundamental difference between drawing graphics on a form and drawing on a picturebox that would cause this behaviour? Something like, when you invalidate a form and cause a redraw it erases what you did last? If not, then I just need to dig a bit further and work out how the cursor is being erased from the previous position.
Here's the original code that works fine on a form:
Private DragRect As New RectangleF(20, 20, 100, 80)
Private Adornments(7) As RectangleF
Private MouseInRect As Boolean = False
[Code]....
I have made a program in which a small space ship rotates, with some tutorials I found, then when i tried to move it I realized that .location does not work for bitmaps..
View 1 RepliesI have a Custom Groupbox that overrides the OnPaint event to do some custom drawingbackgrounds, etc. The problem I have is that when I use it in an application and want to draw text on the control, it gets drawn first, then immediately afterwards the OnPaint from the control gets called and draws on top of the text. Is there any way to get the text drawn after the control's OnPaint?
View 1 RepliesDim fnt As New Font("Verdana", 16)
Protected Overrides Sub OnPaint(ByVal pe As PaintEventArgs)
Dim g As Graphics = pe.Graphics
[code].....
I am having a bit of trouble drawing a grid with GDI+ and VB.net 2008. The grid is designed as one point perspective. The horizontal lines are not correctly positioned, and the form is taking a long time to draw. Could anyone suggest a faster, and mainly more accurite method?
Here is my code currently:
Public Class Form1
Const VanishPoint = -200
Dim g As Graphics = Graphics.FromImage(New Bitmap(Me.Width, Me.Height))
[Code]...
I want to draw a line on a image, easy enough in principal the image is a map and the lines is between city pairs?
View 12 RepliesI have my application to where you can load up an image and draw on it with the mouse left down and drag.Only problem is, if the form becomes the inactive one or is minimized/maximized the drawings go away until I scroll the image in the form (I put the redraw functionality in the picturebox.Paint event).How can I make the lines I draw stay permanently? I've put picturebox1.refresh in the minimizedchanged/maximizechanged and form.activated events and still nothing..Even tried the picturebox's resize event and nothing?
View 18 RepliesI'm trying to draw text on the progressbar. This code below works, but when the progress bar re-paints itself the text disappears.
ProgressBar1.CreateGraphics().DrawString(Vaule & "%", New Font("Arial", CSng(8.25), FontStyle.Regular), Brushes.Black, New PointF(ProgressBar1.Width / 2 - 10, ProgressBar1.Height / 2 - 7))
jmcilhinney suggested i look into the PaintEventHandler.
I read the MSDN documents, but they used PictureBox(). I made this code below, but no luck.
[code]....
my assignment is to draw a graph within my VB form with a some variables I have. I was told by my boss that I should use Microsoft Chart Control 6.0, but I don't think it matters if it is in another software.I currently have a few variables, each with a lot of values, "Frequency", which is user entered from maximum to minimum, CH (channel) 1-4 which are given by a machine output I use at my company. My graph, is supposed to have the Frequency values in the X-Axis (horizontal) and the CH 1-4 values within a range of each other in the Y-Axis. Can anybody help? My code for extracting the data and getting the frequency is below. How I got most of it is thanks to Stanav, the thread is over here: url...It comes with 3 buttons (I have not put in the code for button 3), the 3rd button will be used for plotting the graph when clicked.
View 3 RepliesI have a Custom Groupbox that overrides the OnPaint event to do some custom drawing,backgrounds, etc. The problem I have is that when I use it in an application and want to draw text on the control, it gets drawn first, then immediately afterwards the OnPaint from the control gets called and draws on top of the text. Is there any way to get the text drawn after the control's OnPaint?
View 3 RepliesSay I have 3 Buttons, labelled: Unit 1, Unit 2 and Unit 3. When I click on any button I want a drawing of that unit to appear on screen at a pre-specified starting point. Thereafter when I press any other one of the buttons the unit drawings appear alongside each other in a line. So I could end up with:
[Code]...
With this line...
If PictureBox1.Image = My.Resources._2star Then
I get this error: Operator '=' is not defined for types 'System.Drawing.Image' and 'System.Drawing.Bitmap'.Is there another way to say = with images?
I'm trying to draw a simple rectangular gradient but I keep getting this one error. Here is the code below: Drawing::Rectangle^ myRectangle =
gcnew Drawing::Rectangle(10, 10, 100, 100);
Drawing2D::LinearGradientBrush^ myGradient =
gcnew Drawing2D::LinearGradientBrush(myRectangle ,Color::Red, Color::Blue, 50);
e->Graphics->FillRectangle(myGradient, 20, 30, 100, 100);
I have been looking through the code bank and i cant find anything that is helping me with my problem what i have is a print button that when clicked it goes to my print preview page, then i can print the file. i have got all the other controls on my page to display correctly using this example
e.Graphics.DrawString(sType, New Font("Arial", 10, FontStyle.Underline), Brushes.Black, 110, 650)
but how can i get my ListView header and content to preview on the page as well. my listView has 5 columns and i am using the PrintDocument control.
I've got a fun little question for you all. I am designing a program that allows you to click on a picture to input data in certain areas. What I want to do it pretty allow someone to take a look at a picture. Click the add point tool, then select an area on the picture where it places a circle. I then want them to be able to go back to the circle and modify data if necessary
View 8 RepliesThis may be a stupid question, but is it possible to add things like lines to a form easily? Without creating the line manually using System.Drawing?
View 5 RepliesI'm trying to draw on screen using the mousepath, as I understand I should use the GetDC function and ReleaseDC function, what I want to do is when the mouse left button is down I want to draw anywhere on the screen the path the mouse did (like painter but on the screen), The main problem is that when I draw I have to clean it up later (After the left mouse is up). How can I use the Mousepath to draw on screen?
View 2 Replies
