mirror/tesseract
1
0
Fork 0
mirror of https://github.com/tesseract-ocr/tesseract.git synced 2025-01-19 06:53:36 +08:00
Code Issues Actions 10 Packages Projects Releases Wiki Activity

pdfrenderer: Fix ClipBaseline and optimize code

Browse Source 
The division was made with integers, giving a wrong result.

* Avoid division and use pure integer operations.
* Add missing "static" attribute.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
This commit is contained in:
Stefan Weil 2018-07-01 08:33:56 +02:00
parent a414443fc4
commit 6801085376
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/api/pdfrenderer.cpp
View File

@ -293,16 +293,16 @@ void AffineMatrix(int writing_direction,
// these viewers. I chose this threshold large enough to absorb noise,
// but small enough that lines probably won't cross each other if the
// whole page is tilted at almost exactly the clipping threshold.
void ClipBaseline(int ppi, int x1, int y1, int x2, int y2,
int *line_x1, int *line_y1,
int *line_x2, int *line_y2) {
static void ClipBaseline(int ppi, int x1, int y1, int x2, int y2,
int *line_x1, int *line_y1,
int *line_x2, int *line_y2) {
*line_x1 = x1;
*line_y1 = y1;
*line_x2 = x2;
*line_y2 = y2;
double rise = abs(y2 - y1) * 72 / ppi;
double run = abs(x2 - x1) * 72 / ppi;
if (rise < 2.0 && 2.0 < run)
int rise = abs(y2 - y1) * 72;
int run = abs(x2 - x1) * 72;
if (rise < 2 * ppi && 2 * ppi < run)
*line_y1 = *line_y2 = (y1 + y2) / 2;
}