473,320 Members | 1,950 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,320 software developers and data experts.

using the Point object


I want to create a program that will do graphics like math functions &
fractals & stuff. I've been browsing thru books at the bookstores.
Apparently, the Point object replaced Pset. The books explain how to create a
Point object, but not how to use it. I want to be able to plot individual
pixels. I tried DrawEllipse, but that just draws circles. I reckon that I
have to somehow use the Pen & the Point object. I don't want to draw lines. I
want to be able to plot individual pixels, not circles or ellipses or lines
or boxes. Do I have to create a class & use the object to plot the pixels?
So, how do I use the Point object to plot individual pixels? Thank you. David
Jun 21 '06 #1
5 1989
Hello pcnerd,

Point does not replace PSet. Point is a coordinate, not a pixel. Two Points
make a line-segment. 4 Points make a rectangle.. etc.

Look at the Graphics object for drawing functions. You may have to resort
to drawing a rectangle with a width and height of 1.

-Boo
I want to create a program that will do graphics like math functions &
fractals & stuff. I've been browsing thru books at the bookstores.
Apparently, the Point object replaced Pset. The books explain how to
create a Point object, but not how to use it. I want to be able to
plot individual pixels. I tried DrawEllipse, but that just draws
circles. I reckon that I have to somehow use the Pen & the Point
object. I don't want to draw lines. I want to be able to plot
individual pixels, not circles or ellipses or lines or boxes. Do I
have to create a class & use the object to plot the pixels? So, how do
I use the Point object to plot individual pixels? Thank you. David

Jun 21 '06 #2
guy
try creating a bitmap, you can then use the SetPixel method to set the colour
of the point you want

checkout the BitMap class in the docs

hth

guy

"pcnerd" wrote:

I want to create a program that will do graphics like math functions &
fractals & stuff. I've been browsing thru books at the bookstores.
Apparently, the Point object replaced Pset. The books explain how to create a
Point object, but not how to use it. I want to be able to plot individual
pixels. I tried DrawEllipse, but that just draws circles. I reckon that I
have to somehow use the Pen & the Point object. I don't want to draw lines. I
want to be able to plot individual pixels, not circles or ellipses or lines
or boxes. Do I have to create a class & use the object to plot the pixels?
So, how do I use the Point object to plot individual pixels? Thank you. David

Jun 21 '06 #3

I tried using DrawEllipse. It draws circles. When I set the height & width
to one pixel, the program draws little boxes.As I previously stated , I don't
want to draw lines or circles or boxes. I want to plot INDIVIDUAL pixels.

Thank you.

"GhostInAK" wrote:
Hello pcnerd,

Point does not replace PSet. Point is a coordinate, not a pixel. Two Points
make a line-segment. 4 Points make a rectangle.. etc.

Look at the Graphics object for drawing functions. You may have to resort
to drawing a rectangle with a width and height of 1.

-Boo
I want to create a program that will do graphics like math functions &
fractals & stuff. I've been browsing thru books at the bookstores.
Apparently, the Point object replaced Pset. The books explain how to
create a Point object, but not how to use it. I want to be able to
plot individual pixels. I tried DrawEllipse, but that just draws
circles. I reckon that I have to somehow use the Pen & the Point
object. I don't want to draw lines. I want to be able to plot
individual pixels, not circles or ellipses or lines or boxes. Do I
have to create a class & use the object to plot the pixels? So, how do
I use the Point object to plot individual pixels? Thank you. David


Jun 22 '06 #4

OK, can you be more specific? Is the bitmap created in the background in
memory & then displayed? So, for example, if I wanted to display a fractal,
the fractal would be created as a bitmap & then displayed? Is that correct?

Thank you.
David

"guy" wrote:
try creating a bitmap, you can then use the SetPixel method to set the colour
of the point you want

checkout the BitMap class in the docs

hth

guy

"pcnerd" wrote:

I want to create a program that will do graphics like math functions &
fractals & stuff. I've been browsing thru books at the bookstores.
Apparently, the Point object replaced Pset. The books explain how to create a
Point object, but not how to use it. I want to be able to plot individual
pixels. I tried DrawEllipse, but that just draws circles. I reckon that I
have to somehow use the Pen & the Point object. I don't want to draw lines. I
want to be able to plot individual pixels, not circles or ellipses or lines
or boxes. Do I have to create a class & use the object to plot the pixels?
So, how do I use the Point object to plot individual pixels? Thank you. David

Jun 22 '06 #5
guy
put a picurebox on your form

create a bitmap in code

set the picureboxes image property to your bitmap

so in your case instantiate a bitmap and
use your fractal algorithm to draw on the bitmap

look at the docs for the bitmap class

hth

guy

"pcnerd" wrote:

OK, can you be more specific? Is the bitmap created in the background in
memory & then displayed? So, for example, if I wanted to display a fractal,
the fractal would be created as a bitmap & then displayed? Is that correct?

Thank you.
David

"guy" wrote:
try creating a bitmap, you can then use the SetPixel method to set the colour
of the point you want

checkout the BitMap class in the docs

hth

guy

"pcnerd" wrote:

I want to create a program that will do graphics like math functions &
fractals & stuff. I've been browsing thru books at the bookstores.
Apparently, the Point object replaced Pset. The books explain how to create a
Point object, but not how to use it. I want to be able to plot individual
pixels. I tried DrawEllipse, but that just draws circles. I reckon that I
have to somehow use the Pen & the Point object. I don't want to draw lines. I
want to be able to plot individual pixels, not circles or ellipses or lines
or boxes. Do I have to create a class & use the object to plot the pixels?
So, how do I use the Point object to plot individual pixels? Thank you. David

Jun 22 '06 #6

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

0
by: Nashat Wanly | last post by:
HOW TO: Call a Parameterized Stored Procedure by Using ADO.NET and Visual C# .NET View products that this article applies to. This article was previously published under Q310070 For a Microsoft...
28
by: Daniel | last post by:
Hello =) I have an object which contains a method that should execute every x ms. I can use setInterval inside the object construct like this - self.setInterval('ObjectName.methodName()',...
1
by: Saeed Amrollahi | last post by:
Dear All C++ Programmers Hello I am Saeed Amrollahi. I am a software engineer in Tehran Sewerage Company. I try to use std::map and map::find member function. I use Visual Studio .NET. my...
13
by: Stumped and Confused | last post by:
Hello, I really, really, need some help here - I've spent hours trying to find a solution. In a nutshell, I'm trying to have a user input a value in form's textfield. The value should then be...
3
by: Todd Schinell | last post by:
Back in July, Jeffery Tan posted this: http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=OWOTdf0VDHA.2296%40cpmsftngxa06.phx.gbl In response as to how to get click events from a...
3
by: Rob | last post by:
Hi all, I am having trouble converting the code below (found on http://vbnet.mvps.org/index.html?code/core/sendmessage.htm) into a format that will work using vb .NET. Can anyone have a look...
7
by: Peter Row | last post by:
Hi, I've started work on my own control some parts of which use standard controls, others I need to draw on my controls surface to get the display output I require, however.... I seem to be...
14
by: Peter Hallett | last post by:
I would like to set up a string array as a class member, or field, and then populate this array by reading in from a text file, but I cannot find the appropriate syntax. The getter and setter are...
65
by: Arjen | last post by:
Hi, Form a performance perspective, is it wise to use the ref statement as much as possible? Thanks! Arjen
0
by: DolphinDB | last post by:
Tired of spending countless mintues downsampling your data? Look no further! In this article, you’ll learn how to efficiently downsample 6.48 billion high-frequency records to 61 million...
0
by: ryjfgjl | last post by:
ExcelToDatabase: batch import excel into database automatically...
0
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
0
by: ArrayDB | last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
1
by: PapaRatzi | last post by:
Hello, I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
1
by: Defcon1945 | last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
0
by: af34tf | last post by:
Hi Guys, I have a domain whose name is BytesLimited.com, and I want to sell it. Does anyone know about platforms that allow me to list my domain in auction for free. Thank you
0
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.