[Patchanim-commit] SF.net SVN: patchanim: [104] trunk/patchanim/src/com/mebigfatguy/patchanim/ surface/PatchGenerator.java

[<dbr...@us...>]

Revision: 104
          http://patchanim.svn.sourceforge.net/patchanim/?rev=104&view=rev
Author:   dbrosius
Date:     2008-02-07 21:37:17 -0800 (Thu, 07 Feb 2008)

Log Message:
-----------
pull out buildCoefficients 

Modified Paths:
--------------
    trunk/patchanim/src/com/mebigfatguy/patchanim/surface/PatchGenerator.java

Modified: trunk/patchanim/src/com/mebigfatguy/patchanim/surface/PatchGenerator.java
===================================================================
--- trunk/patchanim/src/com/mebigfatguy/patchanim/surface/PatchGenerator.java	2008-02-08 05:29:50 UTC (rev 103)
+++ trunk/patchanim/src/com/mebigfatguy/patchanim/surface/PatchGenerator.java	2008-02-08 05:37:17 UTC (rev 104)
@@ -47,8 +47,8 @@
 		coords[1] = patch.getPatch(PatchColor.Green);
 		coords[2] = patch.getPatch(PatchColor.Blue);
 		
-		double u, u2, u3, oneMinusU, oneMinusU2, oneMinusU3;
-		double v, v2, v3, oneMinusV, oneMinusV2, oneMinusV3;
+		double u;
+		double v;
 		double[] uCoeffs = new double[PatchCoords.ORDER];
 		double[] vCoeffs = new double[PatchCoords.ORDER];
 		double[] value = new double[3];
@@ -59,29 +59,11 @@
 		
 		for (int iv = 0; iv < sampleSizeY; iv++) {
 			v = (double)iv / (double)sampleSizeY;
-			v2 = v * v;
-			v3 = v2 * v;
-			oneMinusV = 1.0 - v;
-			oneMinusV2 = oneMinusV * oneMinusV;
-			oneMinusV3 = oneMinusV2 * oneMinusV;
+			buildCoefficients(v, vCoeffs);
 			
-			vCoeffs[0] = oneMinusV3;
-			vCoeffs[1] = 3.0 * v * oneMinusV2;
-			vCoeffs[2] = 3.0 * v2 * oneMinusV;
-			vCoeffs[3] = v3;
-
 			for (int iu = 0; iu < sampleSizeX; iu++) {
 				u = (double)iu / (double)sampleSizeX;
-				u2 = u * u;
-				u3 = u2 * u;
-				oneMinusU = 1.0 - u;
-				oneMinusU2 = oneMinusU * oneMinusU;
-				oneMinusU3 = oneMinusU2 * oneMinusU;
-				
-				uCoeffs[0] = oneMinusU3;
-				uCoeffs[1] = 3.0 * u * oneMinusU2;
-				uCoeffs[2] = 3.0 * u2 * oneMinusU;
-				uCoeffs[3] = u3;
+				buildCoefficients(u, uCoeffs);
 			
 				value[0] = value[1] = value[2] = 0.0;
 				
@@ -127,8 +109,8 @@
 		
 		PatchCoords coords = patch.getPatch(color);
 		
-		double u, u2, u3, oneMinusU, oneMinusU2, oneMinusU3;
-		double v, v2, v3, oneMinusV, oneMinusV2, oneMinusV3;
+		double u;
+		double v;
 		double[] uCoeffs = new double[PatchCoords.ORDER];
 		double[] vCoeffs = new double[PatchCoords.ORDER];
 		
@@ -137,29 +119,11 @@
 
 		for (int iv = 0; iv < sampleSizeY; iv++) {
 			v = (double)iv / (double)sampleSizeY;
-			v2 = v * v;
-			v3 = v2 * v;
-			oneMinusV = 1.0 - v;
-			oneMinusV2 = oneMinusV * oneMinusV;
-			oneMinusV3 = oneMinusV2 * oneMinusV;
+			buildCoefficients(v, vCoeffs);
 			
-			vCoeffs[0] = oneMinusV3;
-			vCoeffs[1] = 3.0 * v * oneMinusV2;
-			vCoeffs[2] = 3.0 * v2 * oneMinusV;
-			vCoeffs[3] = v3;
-			
 			for (int iu = 0; iu < sampleSizeX; iu++) {
 				u = (double)iu / (double)sampleSizeX;
-				u2 = u * u;
-				u3 = u2 * u;
-				oneMinusU = 1.0 - u;
-				oneMinusU2 = oneMinusU * oneMinusU;
-				oneMinusU3 = oneMinusU2 * oneMinusU;
-				
-				uCoeffs[0] = oneMinusU3;
-				uCoeffs[1] = 3.0 * u * oneMinusU2;
-				uCoeffs[2] = 3.0 * u2 * oneMinusU;
-				uCoeffs[3] = u3;
+				buildCoefficients(u, uCoeffs);
 			
 				double value = 0.0;
 				for (int i = 0; i < PatchCoords.ORDER; i++) {
@@ -212,5 +176,18 @@
 		graphics.fillRect(0, 0, sampleSizeX, sampleSizeY);
 		return image;
 	}
+	
+	private static void buildCoefficients(double t, double[] coeffs) {
+		double t2 = t * t;
+		double t3 = t2 * t;
+		double oneMinusT = 1.0 - t;
+		double oneMinusT2 = oneMinusT * oneMinusT;
+		double oneMinusT3 = oneMinusT2 * oneMinusT;
+		
+		coeffs[0] = oneMinusT3;
+		coeffs[1] = 3.0 * t * oneMinusT2;
+		coeffs[2] = 3.0 * t2 * oneMinusT;
+		coeffs[3] = t3;
+	}
 
 }


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