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Fix some issues with resampling drawings

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The X scale/offset was being used for both X and Y coordinates.

Only non-negative integers were supported. xy-VSFilter and libass both
now support non-integer coordinates, and negative coordinates have of
course always been valid. Resampled coordinates are now rounded to
eighth-pixels rather than whole pixels.
This commit is contained in:
Thomas Goyne 2013-07-30 20:31:10 -07:00
parent 13d31d17ef
commit 52d67accb4
4 changed files with 21 additions and 12 deletions
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14
aegisub/src/resolution_resampler.cpp
View file

@ -21,9 +21,11 @@
#include "ass_dialogue.h"
#include "ass_file.h"
#include "ass_style.h"
#include "utils.h"
#include <libaegisub/of_type_adaptor.h>
#include <libaegisub/split.h>
#include <libaegisub/util.h>
#include <algorithm>
#include <boost/algorithm/string/predicate.hpp>
@ -44,14 +46,16 @@ namespace {
final.reserve(drawing.size());
for (auto const& cur : agi::Split(drawing, ' ')) {
if (std::all_of(begin(cur), end(cur), isdigit)) {
int val = boost::lexical_cast<int>(agi::str(cur));
double val;
if (agi::util::try_parse(agi::str(cur), &val)) {
if (is_x)
val = (int)((val + shift_x) * scale_x + .5);
val = (val + shift_x) * scale_x;
else
val = (int)((val + shift_y) * scale_y + .5);
final += std::to_string(val);
val = (val + shift_y) * scale_y;
val = int(val * 8 + .5) / 8.0; // round to eighth-pixels
final += float_to_string(val);
final += ' ';
is_x = !is_x;
}
else if (cur.size() == 1) {
char c = tolower(cur[0]);

8
aegisub/src/utils.cpp
View file

@ -86,6 +86,14 @@ wxString PrettySize(int bytes) {
return wxString::Format(fmt, size) + " " + suffix[i];
}
std::string float_to_string(double val) {
std::string s = str(boost::format("%.3f") % val);
size_t pos = s.find_last_not_of("0");
if (pos != s.find(".")) ++pos;
s.erase(begin(s) + pos, end(s));
return s;
}
void StatusTimeout(wxString const& msg, int ms) {
wxGetApp().frame->StatusTimeout(msg, ms);
}

2
aegisub/src/utils.h
View file

@ -52,6 +52,8 @@ class wxWindow;
wxString PrettySize(int bytes);
std::string float_to_string(double val);
void StatusTimeout(wxString const& msg, int ms = 10000);
/// @brief Get the smallest power of two that is greater or equal to x

9
aegisub/src/vector2d.cpp
View file

@ -23,6 +23,8 @@
#include "vector2d.h"
#include "utils.h"
#include <boost/format.hpp>
#include <limits>
@ -86,13 +88,6 @@ std::string Vector2D::DStr(char sep) const {
return str(boost::format("%d%c%d") % (int)x % sep % (int)y);
}
static std::string float_to_string(float val) {
std::string s = str(boost::format("%.3f") % val);
size_t pos = s.find_last_not_of("0");
if (pos != s.find(".")) ++pos;
return s.substr(0, pos);
}
std::string Vector2D::Str(char sep) const {
return float_to_string(x) + sep + float_to_string(y);
}