'Relocating' (x,y) coordinates OR define quads?

[Redeemer]

In response to an answer given by MIGGYD I leave this question in the hands of any who read this. I need to set the (0,0)coordinate to the middle of (640,480) screen 12<br>or (320,240)for a numberplane.<br><br>or<br><br>for LIVED's answer I need to define each quadrant but this is very complex but would probably yeild a better result, please refer to my previous thread for more details!<br><br>any responses please state in detail what I should do, both programmers have been of great help!!!!!! I couldn't have done it without you so far, I will send you the final thing when it is done!<br><br>

 

[eliuker]

hmmm its preety simple <br>check out the help file <br>on the window command<br>if you are still stuck<br>sorry i couldnt help<br>

 

[MiggyD]

I'll send you an email, but just out of curosity, will the negitive numbers be computated as well? or <b>ONLY</b> per user's entry?<br><br>Yes, <font color=red>Live</font>'s suggestion is a good one.&nbsp;&nbsp;But, since you may have the plane in graphics mode <font color=purple>(hint: 640 x 480 -- kinda gives that impression)</font>&nbsp;&nbsp;you might want to consider repositioning the base coordinates to screen center--which by the way is 319 x 239 (not 320 x 240)..remember that the zero (0) in QB is considered to be a valid number instead of NULL...the screen may hold 640 x 480 pixcels <b>BUT</b> they start the count at zero (0) so zero is position #1 and pixcel 1 is position #2...(like the commercial says)...and so on...and so on...and so on.&nbsp;&nbsp;<i>(Sorry, this is the perfectionist side of me talking, I'll try to control myself)</i>.<br><br>I really don't think anybody is going to count pixcels to see if you're in the middle or not; so disregard the above. <p> <br><a href=mailto: > </a><br><a href= > </a><br>Why do gas stations have signs saying No Smoking, yet they sell cigaretes?

 

[MiggyD]

Below is a sample of what I mean by relocating the origin coordinates (0,0) to the center of the screen.&nbsp;&nbsp;Sorry, I nearly forgot to let you know that in order to do it you must activate WINDOW function...see below<br><br><b>'<br>'Title:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Simple Number Plane<br>'Creator:&nbsp;&nbsp;&nbsp;MiggyD<br>'<br>SCREEN 12&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'Select Screen Mode<br>CLS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'Clear entire screen of garbage<br>VIEW&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'Turn Entire Screen to Graphics Mode<br>CLS 1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'Clear entire Graphics from screen (opt'l)<br><font color=red>WINDOW (-319, 239)-(319, -239)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'Redefine 0,0 cordinates to center of scrn</font><br><br>LOCATE 30, 1<br>PRINT &quot;Coordinates 0,0 is now in center of screen&quot;;<br>LINE (0, 0)-(0, 0), 15<br>SLEEP 4<br><br>LINE (0, 0)-(319, 239), 2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'green line from 0 to +x,+y (top right)<br>LOCATE 30, 1<br>PRINT &quot;Coordinates 0,0 to 319,239 in GREEN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;;<br>SLEEP 4<br><br>LINE (0, 0)-(319, -239), 3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'cyan line from 0 to +x,-y (bottom right)<br>LOCATE 30, 1<br>PRINT &quot;Coordinates 0,0 to 319,-239 in CYAN (lite blue-ish)&quot;;<br>SLEEP 4<br><br>LINE (0, 0)-(-319, 239), 4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'red line from 0 to -x,+y (top left)<br>LOCATE 30, 1<br>PRINT &quot;Coordinates 0,0 to -319,239 in RED&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;;<br>SLEEP 4<br><br>LINE (0, 0)-(-319, -239), 5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'magenta line from 0 to -x,-y(bottom left)<br>LOCATE 30, 1<br>PRINT &quot;Coordinates 0,0 to -319,-239 in MAGENTA (purple-ish)&quot;;<br>LINE (0, 0)-(-319, -239), 5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'This redraw line ON TOP OF TEXT<br>SLEEP 4<br><br>ClearKbBuf:<br>FOR x = 1 TO 100<br>&nbsp;&nbsp;&nbsp;&nbsp;Dump$ = INKEY$<br>NEXT x<br><br>InputX:<br>LOCATE 30, 1<br>PRINT STRING$(79, 32);<br>LOCATE 30, 1<br>PRINT &quot;Enter the 'X' coordinate [left to right] (range -319 to 319):&quot;;<br>INPUT ; x<br>IF x &gt; 319 OR x &lt; -319 THEN GOTO InputX<br><br>InputY:<br>LOCATE 30, 1<br>PRINT STRING$(79, 32);<br>LOCATE 30, 1<br>PRINT &quot;Enter the 'Y' coordinate [top to bottom] (range 239 to -239):&quot;;<br>INPUT ; y<br>IF y &gt; 239 OR y &lt; -239 THEN GOTO InputY<br><br>DispInputs:<br>LOCATE 30, 1<br>PRINT STRING$(79, 32);<br>LOCATE 30, 1<br>PRINT &quot;Your input will be displayed in WHITE from 0 to &quot;; STR$(x); &quot;,&quot;; STR$;<br>LINE (0, 0)-(x, y), 15, , &HFCF0<br>SLEEP 7<br><br>END</b><br><br>Hope this helps you decide which way to go.&nbsp;&nbsp;Good Luck <p> <br><a href=mailto: > </a><br><a href= > </a><br>Why do gas stations have signs saying No Smoking, yet they sell cigaretes?