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Tocs1001 · 05-30-2006, 08:39 PM

Hey I'm back with a couple programming questions, I'm using c++ in Microsoft Visual Studio .NET 2003, and MFC.

I'm working on my map editor...
Screeny: http://home.fuse.net/Dragonstorm/MapEditor.jpg
Yes the map on the screen stinks, it was a File->Load Test....

First Question.....
With the Dialog Builder how do I set the Min and Max Values of a Slider Control? :rolleyes: I looked through books, I could do it in code, but I was hoping there was a way to do it in the editor....Less to keep track of If i decide to change how it's going to work...

Second Question.....
I have a linear array [Size of image * Size of Image] to hold the height data because you cant create a 2D array with

Code:

char *map = new char [Size][Size];

'Size' being a variable

I'm trying to write the Brush tool to paint with right now and how would I go about finding the pixels to modify if I knew the diameter of the Brush's circle? I want the user to use the "Tool Box" to select the brush width and use a circle with that diameter to paint on my map, I can get the X,Y of the mouse simple but how do i find the points around it?

HopeDagger · 05-31-2006, 03:24 AM

Quote:

I have a linear array [Size of image * Size of Image] to hold the height data because you cant create a 2D array with

Code:

char *map = new char [Size][Size];

'Size' being a variable

Sure you can:

Code:

char **map = new char[Size];
for(int a=0; a < Size; a++)
  map[a] = new char[Size];

This makes it significantly easier to find exact coordinates in the array.

Quote:

I'm trying to write the Brush tool to paint with right now and how would I go about finding the pixels to modify if I knew the diameter of the Brush's circle? I want the user to use the "Tool Box" to select the brush width and use a circle with that diameter to paint on my map, I can get the X,Y of the mouse simple but how do i find the points around it?

There's a few good ways to do this. Since I'm no adept at circle-drawing, I refer you to Google instead. Plenty of good material on circle drawing algorithms.

Tocs1001 · 05-31-2006, 10:59 AM

an array in an array.....nifty....., I guess i'll try google i was wondering if anyone had any neat tricks for it

thanks hope I might rewrite to the array in an array thing..

odie5533 · 06-11-2006, 05:57 AM

If you want plain circles, try looking for Bresenham's circle algorithm. Very fast, and very efficient.

punkerdan85 · 06-17-2006, 10:19 PM

How can you put a character array at each element of a character array when each element is supposed to be a single character?

05-30-2006, 08:39 PM	#1 (permalink)
Tocs1001 Cloud's Hair Spray Join Date: May 2006 Posts: 63 Reputation: 10	MFC Question, "Brush" Question Hey I'm back with a couple programming questions, I'm using c++ in Microsoft Visual Studio .NET 2003, and MFC. I'm working on my map editor... Screeny: http://home.fuse.net/Dragonstorm/MapEditor.jpg Yes the map on the screen stinks, it was a File->Load Test.... First Question..... With the Dialog Builder how do I set the Min and Max Values of a Slider Control? :rolleyes: I looked through books, I could do it in code, but I was hoping there was a way to do it in the editor....Less to keep track of If i decide to change how it's going to work... Second Question..... I have a linear array [Size of image * Size of Image] to hold the height data because you cant create a 2D array with Code: char *map = new char [Size][Size]; 'Size' being a variable I'm trying to write the Brush tool to paint with right now and how would I go about finding the pixels to modify if I knew the diameter of the Brush's circle? I want the user to use the "Tool Box" to select the brush width and use a circle with that diameter to paint on my map, I can get the X,Y of the mouse simple but how do i find the points around it? __________________ Legends of Alterion - Under Development toast lands butter down, cats land on their feet, what happens when u strap toast to a cat?..... Math indicates they will hover in quatom indecision...(yet to be tested)

05-31-2006, 10:59 AM	#3 (permalink)
Tocs1001 Cloud's Hair Spray Join Date: May 2006 Posts: 63 Reputation: 10	an array in an array.....nifty....., I guess i'll try google i was wondering if anyone had any neat tricks for it thanks hope I might rewrite to the array in an array thing.. __________________ Legends of Alterion - Under Development toast lands butter down, cats land on their feet, what happens when u strap toast to a cat?..... Math indicates they will hover in quatom indecision...(yet to be tested)

06-17-2006, 10:19 PM	#5 (permalink)
punkerdan85 Detective Kirby Join Date: May 2006 Posts: 152 Reputation: 10	How can you put a character array at each element of a character array when each element is supposed to be a single character? __________________

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06-11-2006, 05:57 AM	#4 (permalink)
odie5533 Marios's Mustache Wax Join Date: Jun 2006 Posts: 2 Reputation: 10	If you want plain circles, try looking for Bresenham's circle algorithm. Very fast, and very efficient.