[Jake2-commits] jake2/src/jake2/util Math3D.java,1.7,1.8

[Carsten W. <ca...@us...>]

Update of /cvsroot/jake2/jake2/src/jake2/util
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv13207/src/jake2/util

Modified Files:
	Math3D.java 
Log Message:
small optimizations

Index: Math3D.java
===================================================================
RCS file: /cvsroot/jake2/jake2/src/jake2/util/Math3D.java,v
retrieving revision 1.7
retrieving revision 1.8
diff -C2 -d -r1.7 -r1.8
*** Math3D.java	22 Sep 2004 19:22:13 -0000	1.7
--- Math3D.java	16 Jan 2005 17:04:50 -0000	1.8
***************
*** 175,184 ****
  	private static float tmpmat[][] = new float[3][3];
  	private static float zrot[][] = new float[3][3];
! 	public static void RotatePointAroundVector(float[] dst, float[] dir, float[] point, float degrees) {
! 
! 		float[] vr = { 0.0f, 0.0f, 0.0f };
! 		float[] vup = { 0.0f, 0.0f, 0.0f };
! 		float[] vf = { 0.0f, 0.0f, 0.0f };
  
  		vf[0] = dir[0];
  		vf[1] = dir[1];
--- 175,185 ----
  	private static float tmpmat[][] = new float[3][3];
  	private static float zrot[][] = new float[3][3];
! 	
! 	// to reduce garbage
! 	private static final float[] vr = {0, 0, 0};
! 	private static final float[] vup = {0, 0, 0};
! 	private static final float[] vf = {0, 0, 0};
  
+ 	public static void RotatePointAroundVector(float[] dst, float[] dir, float[] point, float degrees) {
  		vf[0] = dir[0];
  		vf[1] = dir[1];
***************
*** 225,228 ****
--- 226,230 ----
  		}
  	}
+ 
  	public static void MakeNormalVectors(float[] forward, float[] right, float[] up) {
  		// this rotate and negat guarantees a vector
***************
*** 287,290 ****
--- 289,295 ----
  		dst[2] = p[2] - d * dst[2];
  	}
+ 	
+ 	private static final float[][] PLANE_XYZ = {{1, 0, 0}, {0, 1, 0}, {0, 0, 1}}; 
+ 	
  	/** assumes "src" is normalized */
  	public static void PerpendicularVector(float[] dst, float[] src) {
***************
*** 300,308 ****
  			}
  		}
- 		float tempvec[] = { 0.0f, 0.0f, 0.0f };
- 		tempvec[pos] = 1.0F;
- 
  		// project the point onto the plane defined by src
! 		ProjectPointOnPlane(dst, tempvec, src);
  
  		//normalize the result 
--- 305,310 ----
  			}
  		}
  		// project the point onto the plane defined by src
! 		ProjectPointOnPlane(dst, PLANE_XYZ[pos], src);
  
  		//normalize the result