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Added (optional) debug logging to CalculateTriangles 

Sadly it's virtually impossible to tell what's going on without this kind
of thing.
alternate-lights
Peter Wortmann 2015-02-22 23:03:38 +01:00
parent 696ebb083f
commit 52a2f4bb8e
1 changed files with 19 additions and 0 deletions
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19
src/landscape/fow/C4FoWLightSection.cpp
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@ -492,6 +492,19 @@ std::list<C4FoWBeamTriangle> C4FoWLightSection::CalculateTriangles(C4FoWRegion *
if(level != bestLevel)
continue;
// Debugging
//#define FAN_STEP_DEBUG
#ifdef FAN_STEP_DEBUG
LogSilentF("Fan step %d (i=%d)", step, std::distance(result.begin(),it));
for (std::list<C4FoWBeamTriangle>::iterator it2 = result.begin(); it2 != result.end(); it2++) {
const char *marker = "";
if (it2 == it) marker = " (it)";
if (it2 == nextIt) marker = " (nextIt)";
LogSilentF(" %.010f %.010f%s", it2->fanLX, it2->fanLY, marker);
LogSilentF(" %.010f %.010f%s", it2->fanRX, it2->fanRY, marker);
}
#endif
// Calculate light bounds. We assume a "smaller" light for closer beams
float lightLX, lightLY, lightRX, lightRY;
LightBallLeftMostPoint(tri.fanRX, tri.fanRY, lightLX, lightLY);
@ -552,6 +565,9 @@ std::list<C4FoWBeamTriangle> C4FoWLightSection::CalculateTriangles(C4FoWRegion *
tri.fanLX, tri.fanLY, fanRXp, tri.fanRY,
&crossX, &crossY, &b);
#ifdef FAN_STEP_DEBUG
LogSilentF("Ascend, b=%.010f, cross=%.010f/%.010f", b, crossX, crossY);
#endif
// The self-shadow-check should have made sure that the two are
// never parallel.
assert(f); (void)f;
@ -634,6 +650,9 @@ std::list<C4FoWBeamTriangle> C4FoWLightSection::CalculateTriangles(C4FoWRegion *
bool f = find_cross(lightLX, lightLY, tri.fanRX, tri.fanRY,
nextTri.fanLX, nextTri.fanLY, fanRXp, nextTri.fanRY,
&crossX, &crossY, &b);
#ifdef FAN_STEP_DEBUG
LogSilentF("Descend, b=%.010f, cross=%.010f/%.010f", b, crossX, crossY);
#endif
assert(f);
if (b <= threshold)
{