From: Rudolf Polzer <divVerent@xonotic.org>
Date: Wed, 12 Oct 2011 10:19:06 +0000 (+0200)
Subject: better comparisons
X-Git-Tag: xonotic-v0.6.0~11
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=e6d0dc8c5167d06b8bb1c550a38a7ee8356a74b6;p=xonotic%2Fmediasource.git

better comparisons
---

diff --git a/sound/weapons/loopfinder/findloop.c b/sound/weapons/loopfinder/findloop.c
index 997e11e..14d12f4 100644
--- a/sound/weapons/loopfinder/findloop.c
+++ b/sound/weapons/loopfinder/findloop.c
@@ -52,12 +52,18 @@ void doFourier(double *input, int channels, sf_count_t len, fftw_complex *output
 	fftw_execute_dft_r2c(planlos, windowedData, output);
 }
 
+// idea: if match, then sxx * syy = sxy * sxy
+
 double vectorDot(fftw_complex *v1, fftw_complex *v2, size_t length)
 {
 	size_t i;
 	double sum = 0;
 	for(i = 0; i < length; ++i)
 		sum += cabs(v1[i]) * cabs(v2[i]);
+	for(i = 0; i < length; ++i)
+		sum += 0.001 * creal(v1[i]) * creal(v2[i]);
+	for(i = 0; i < length; ++i)
+		sum += 0.001 * cimag(v1[i]) * cimag(v2[i]);
 	return sum;
 }