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Offline Gorgorath

Junior Duke




Java games rock!


« Posted 2006-01-25 16:33:51 »

-3592.188597 -31119.243622 -31.656954 45 48 55
-4032.520771 -32321.662903 -2988.956690 21 20 25
-4032.530785 -32321.731567 -2974.183321 20 19 24
-3994.546652 -32327.033997 -2988.503218 19 18 23
-4033.147812 -32338.432312 -1982.117653 21 20 25
-4032.834053 -32324.501038 -2929.337263 21 20 26
-4033.452511 -32333.972931 -2537.735462 20 19 25
-4032.876968 -32326.667786 -2749.205112  19 18 23
-4033.049583 -32326.438904 -2869.204998 20 19 25


the first 3 numbers are the coordinates, the second three are the rgb values.
Right now i'm using this code to read them in:
   try
      {
         d = new DataInputStream( new BufferedInputStream(
                            new FileInputStream(ptsFile) ) );
      }
      catch ( FileNotFoundException ie)
      {
         return -1;
      }

      try
      {
         while ((d != null) && (d.available() > 0))
         {
            s = d.readLine();/*StringOperations.nextData(d);*/
            if (s != null)
            {
               tokens = new StringTokenizer(s);
               if (tokens.countTokens() == 6)
               { //Parse tokens as normally

any suggestions, coz i need to read in a million of these points:)
Offline kevglass

JGO Kernel


Medals: 191
Projects: 24
Exp: 18 years


Coder, Trainee Pixel Artist, Game Reviewer


« Reply #1 - Posted 2006-01-25 17:16:03 »

Write a tool to convert from your text format, to a binary format. Read the binary format in one big data buffer (IntBuffer ?) and use it directly from that buffer. Smiley

Kev

Offline Gorgorath

Junior Duke




Java games rock!


« Reply #2 - Posted 2006-01-26 14:47:20 »

okay i figured out i need to use Nio;)

but right now i have it like this, first i put a integer in a bytebuffer, this is the total number of points to be read in, after that i put the coordinates array in it. and finally tthe rgb values. 
Then i want  to create directly floatbuffers from it by its given position and limit, but how can i do this:)
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Offline Riven
« League of Dukes »

JGO Overlord


Medals: 823
Projects: 4
Exp: 16 years


Hand over your head.


« Reply #3 - Posted 2006-01-26 15:31:58 »

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ByteBuffer bb = ByteBuffer.allocateDirect(...).order(ByteOrder.nativeOrder());
// fill with data
bb.rewind(); // or set any position/limit you want the FloatBuffer to refer to...
FloatBuffer fb = bb.asFloatBuffer();

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Offline Gorgorath

Junior Duke




Java games rock!


« Reply #4 - Posted 2006-01-26 15:54:19 »

1  
2  
3  
4  
ByteBuffer bb = ByteBuffer.allocateDirect(...).order(ByteOrder.nativeOrder());
// fill with data
bb.rewind(); // or set any position/limit you want the FloatBuffer to refer to...
FloatBuffer fb = bb.asFloatBuffer();

what i want( don't know if it's possible is the following ):
at position 4 ( coz of the first integer in the buffer) my vertex positions starts with goes from 4 till (sizeOf(float)*4*numPoints),
and then i want to read in the byte values that are stored after the vertices. I don't want to use getFloat() coz i want to give the buffers directly to opengl
but is it posible, coz i read the the method asFloatBuffer for instance read from 'position' to the end of the buffer
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