void updateDecorations(Surface &suf, MaterialAnimator &matAnimator,
Vector2f const &materialOrigin, Vector3d const &topLeft,
Vector3d const &bottomRight, Sector *containingSector = nullptr)
{
Vector3d delta = bottomRight - topLeft;
if(de::fequal(delta.length(), 0)) return;
Material &material = matAnimator.material();
int const axis = suf.normal().maxAxis();
Vector2d sufDimensions;
if(axis == 0 || axis == 1)
{
sufDimensions.x = std::sqrt(de::squared(delta.x) + de::squared(delta.y));
sufDimensions.y = delta.z;
}
else
{
sufDimensions.x = std::sqrt(de::squared(delta.x));
sufDimensions.y = delta.y;
}
if(sufDimensions.x < 0) sufDimensions.x = -sufDimensions.x;
if(sufDimensions.y < 0) sufDimensions.y = -sufDimensions.y;
// Generate a number of decorations.
int decorIndex = 0;
material.forAllDecorations([&suf, &matAnimator, &materialOrigin
, &topLeft, &bottomRight, &containingSector
, &delta, &axis, &sufDimensions, &decorIndex]
(MaterialDecoration &decor)
{
Vector2i const &matDimensions = matAnimator.material().dimensions();
MaterialAnimator::Decoration const &decorSS = matAnimator.decoration(decorIndex);
// Skip values must be at least one.
Vector2i skip = Vector2i(decor.patternSkip().x + 1, decor.patternSkip().y + 1)
.max(Vector2i(1, 1));
Vector2f repeat = matDimensions * skip;
if(repeat == Vector2f(0, 0))
return LoopAbort;
Vector3d origin = topLeft + suf.normal() * decorSS.elevation();
float s = de::wrap(decorSS.origin().x - matDimensions.x * decor.patternOffset().x + materialOrigin.x,
0.f, repeat.x);
// Plot decorations.
for(; s < sufDimensions.x; s += repeat.x)
{
// Determine the topmost point for this row.
float t = de::wrap(decorSS.origin().y - matDimensions.y * decor.patternOffset().y + materialOrigin.y,
0.f, repeat.y);
for(; t < sufDimensions.y; t += repeat.y)
{
float const offS = s / sufDimensions.x;
float const offT = t / sufDimensions.y;
Vector3d patternOffset(offS, axis == VZ? offT : offS, axis == VZ? offS : offT);
Vector3d decorOrigin = origin + delta * patternOffset;
ConvexSubspace *subspace = suf.map().bspLeafAt(decorOrigin).subspacePtr();
if(!subspace) continue;
if(!subspace->contains(decorOrigin)) continue;
if(containingSector)
{
// The point must be in the correct sector.
if(containingSector != &subspace->sector())
continue;
}
suf.addDecoration(new LightDecoration(decorSS, decorOrigin));
}
}
decorIndex += 1;
return LoopContinue;
});
}
void materialAnimatorDecorationStageChanged(MaterialAnimator &animator)
{
markSurfacesForRedecoration(animator.material());
}