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BlockPolygon: unrotate from internal to image coordinates

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This commit is contained in:
Robert Sachunsky 2019-12-16 17:32:11 +01:00
parent 60b07d5dd8
commit 5751a408c9
1 changed files with 7 additions and 1 deletions
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8
src/ccmain/pageiterator.cpp
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@ -370,7 +370,13 @@ Pta* PageIterator::BlockPolygon() const {
return nullptr; // Already at the end!
if (it_->block()->block->pdblk.poly_block() == nullptr)
return nullptr; // No layout analysis used - no polygon.
ICOORDELT_IT it(it_->block()->block->pdblk.poly_block()->points());
// Copy polygon, so we can unrotate it to image coordinates.
POLY_BLOCK* internal_poly = it_->block()->block->pdblk.poly_block();
ICOORDELT_LIST vertices;
vertices.deep_copy(internal_poly->points(), ICOORDELT::deep_copy);
POLY_BLOCK poly(&vertices, internal_poly->isA());
poly.rotate(it_->block()->block->re_rotation());
ICOORDELT_IT it(poly.points());
Pta* pta = ptaCreate(it.length());
int num_pts = 0;
for (it.mark_cycle_pt(); !it.cycled_list(); it.forward(), ++num_pts) {