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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit47d455dd55be855e4cc691c32f687f723d9247ee (patch)
tree52e236aaa2576bdb3840ebede26619692fed6d7d /kpdf/xpdf/splash/SplashMath.h
downloadtdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.tar.gz
tdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kpdf/xpdf/splash/SplashMath.h')
-rw-r--r--kpdf/xpdf/splash/SplashMath.h89
1 files changed, 89 insertions, 0 deletions
diff --git a/kpdf/xpdf/splash/SplashMath.h b/kpdf/xpdf/splash/SplashMath.h
new file mode 100644
index 00000000..12e0eec1
--- /dev/null
+++ b/kpdf/xpdf/splash/SplashMath.h
@@ -0,0 +1,89 @@
+//========================================================================
+//
+// SplashMath.h
+//
+//========================================================================
+
+#ifndef SPLASHMATH_H
+#define SPLASHMATH_H
+
+#include <aconf.h>
+#if USE_FIXEDPOINT
+#include "FixedPoint.h"
+#else
+#include <math.h>
+#endif
+#include "SplashTypes.h"
+
+static inline SplashCoord splashAbs(SplashCoord x) {
+#if USE_FIXEDPOINT
+ return FixedPoint::abs(x);
+#else
+ return fabs(x);
+#endif
+}
+
+static inline int splashFloor(SplashCoord x) {
+#if USE_FIXEDPOINT
+ return FixedPoint::floor(x);
+#else
+ return (int)floor(x);
+#endif
+}
+
+static inline int splashCeil(SplashCoord x) {
+#if USE_FIXEDPOINT
+ return FixedPoint::ceil(x);
+#else
+ return (int)ceil(x);
+#endif
+}
+
+static inline int splashRound(SplashCoord x) {
+#if USE_FIXEDPOINT
+ return FixedPoint::round(x);
+#else
+ return (int)floor(x + 0.5);
+#endif
+}
+
+static inline SplashCoord splashSqrt(SplashCoord x) {
+#if USE_FIXEDPOINT
+ return FixedPoint::sqrt(x);
+#else
+ return sqrt(x);
+#endif
+}
+
+static inline SplashCoord splashPow(SplashCoord x, SplashCoord y) {
+#if USE_FIXEDPOINT
+ return FixedPoint::pow(x, y);
+#else
+ return pow(x, y);
+#endif
+}
+
+static inline SplashCoord splashDist(SplashCoord x0, SplashCoord y0,
+ SplashCoord x1, SplashCoord y1) {
+ SplashCoord dx, dy;
+ dx = x1 - x0;
+ dy = y1 - y0;
+#if USE_FIXEDPOINT
+ // this handles the situation where dx*dx or dy*dy is too large to
+ // fit in the 16.16 fixed point format
+ SplashCoord dxa, dya;
+ dxa = splashAbs(dx);
+ dya = splashAbs(dy);
+ if (dxa == 0 && dya == 0) {
+ return 0;
+ } else if (dxa > dya) {
+ return dxa * FixedPoint::sqrt(dya / dxa + 1);
+ } else {
+ return dya * FixedPoint::sqrt(dxa / dya + 1);
+ }
+#else
+ return sqrt(dx * dx + dy * dy);
+#endif
+}
+
+#endif