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优化文本绘制函数

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serial
BlueMatthew 1 year ago
parent 37ebf5a55e
commit a3ec2f43c3
1 changed files with 19 additions and 44 deletions
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61
app/src/main/cpp/CvText.cpp
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@ -462,6 +462,7 @@ namespace cv {
currentPos.x -= bbox.xMin * 64;
currentPos.y -= bbox.yMax * 64;
int row, col;
#if defined(USING_HB)
for (unsigned int i = 0; i < textLen; i++)
@ -530,44 +531,28 @@ namespace cv {
}
float bearingX = slot->metrics.horiBearingX >> 6;
// float bearingY = slot->metrics.horiBearingY >> 6;
float bearingY = slot->metrics.horiBearingY >> 6;
// float advance = slot->advance.x >> 6;
// Allocate data for our image and clear it out to transparent.
// Pixel32 *pxl = new Pixel32[imgSize];
// memset(pxl, 0, sizeof(Pixel32) * imgSize);
offsetY = ((bbox.yMax - bbox.yMin) - ((glyph_bbox.yMax - glyph_bbox.yMin))) / 2;
// offsetY = ((bbox.yMax) - (glyph_bbox.yMax >> 6)) / 2;
offsetY = bbox.yMax - (glyph_bbox.yMax >> 6);
// Loop over the outline spans and just draw them into the
// image.
for (Spans::iterator s = outlineSpans.begin(); s != outlineSpans.end(); ++s)
{
// int row = (imgHeight - 1 - (s->y - rect.ymin)) - imgHeight + (rect.ymax - rect.ymin);
// int row = (imgHeight - 1 - (s->y - rect.ymin));
int row = (bbox.yMax - bbox.yMin) - (s->y - rect.ymin) + _org.y - offsetY;
row = imgHeight - (s->y - (currentPos.y >> 6)) - bbox.yMax;
col = s->x - (currentPos.x >> 6);
if (row < 0 || row >= imgHeight)
{
continue;
}
for (int w = 0; w < s->width; ++w)
{
int col = s->x - rect.xmin + w + _org.x + bearingX;
col++;
if (col < 0 || col >= imgWidth)
{
continue;
}
// int row = ((bbox.yMax - bbox.yMin) - (glyph_bbox.yMax - glyph_bbox.yMin)) / 2 - (s->y - rect.ymin) + _org.y;
// mat.at<Vec3b>((imgHeight - 1 - (s->y - rect.ymin)), s->x - rect.xmin + w) = outlineColor;
mat.at<Vec3b>(row, col) = outlineColor;
// mat.at<Vec3b>(-(s->y - rect.ymin), s->x - rect.xmin + w) = outlineColor;
// vec3b.
/*
pxl[(int)((imgHeight - 1 - (s->y - rect.ymin)) * imgWidth
+ s->x - rect.xmin + w)] =
Pixel32(outlineCol.r, outlineCol.g, outlineCol.b,
s->coverage);
*/
}
}
@ -575,23 +560,20 @@ namespace cv {
// the image.
for (Spans::iterator s = spans.begin(); s != spans.end(); ++s)
{
// int row = (imgHeight - 1 - (s->y - rect.ymin)) - imgHeight + (rect.ymax - rect.ymin);
int row = (bbox.yMax - bbox.yMin) - (s->y - rect.ymin) + _org.y - offsetY;
row = imgHeight - (s->y - (currentPos.y >> 6)) - bbox.yMax;
col = s->x - (currentPos.x >> 6);
if (row < 0 || row >= imgHeight)
{
continue;
}
for (int w = 0; w < s->width; ++w)
{
// int col = s->x - rect.xmin + w + _org.x + bearingX;
int col = s->x - rect.xmin + w + _org.x + bearingX;
col++;
if (col < 0 || col >= imgWidth)
{
continue;
}
// int row = ((bbox.yMax - bbox.yMin) - (glyph_bbox.yMax - glyph_bbox.yMin)) / 2 - (s->y - rect.ymin) + _org.y;
mat.at<Vec3b>(row, col) = fontColor;
// mat.at<Vec3b>(-(s->y - rect.ymin), s->x - rect.xmin + w) = fontColor;
#if 0
Pixel32 &dst =
pxl[(int)(
@ -619,17 +601,9 @@ namespace cv {
#endif
// Update current position ( in FreeType coordinates )
float advance = mFace->glyph->advance.x >> 6;
currentPos.x += mFace->glyph->advance.x + mFace->glyph->metrics.horiBearingX;
// float advance = mFace->glyph->advance.x >> 6;
currentPos.x += mFace->glyph->advance.x;
currentPos.y += mFace->glyph->advance.y;
// currentPos.x += mFace->glyph->metrics.horiBearingX >> 6;
// currentPos.y += mFace->glyph->metrics.horiBearingY >> 6;
// currentPos.x += mFace->glyph->metrics.horiBearingX;
// currentPos.y += mFace->glyph->metrics.horiBearingY;
// break;
_org.x += (mFace->glyph->advance.x + mFace->glyph->metrics.horiBearingX) >> 6;
_org.y += mFace->glyph->advance.y >> 6;
}
@ -664,7 +638,7 @@ namespace cv {
use_kerning = FT_HAS_KERNING(mFace);
previous = 0;
FT_Vector currentPos = { 0,0 };
FT_Vector currentPos = { 0, 0 };
FT_Set_Transform(mFace, 0, &currentPos);
#if defined(USING_HB)
hb_buffer_t *hb_buffer = hb_buffer_create();
@ -700,6 +674,7 @@ namespace cv {
// yMax = cv::max(yMax, currentPos.y + (mFace->glyph->advance.y));
continue;
}
// FT_Set_Transform(mFace, 0, &currentPos);
glyph_index = FT_Get_Char_Index(mFace, wstr[i]);
CV_Assert(!FT_Load_Glyph(mFace, glyph_index, 0));
#endif
@ -716,8 +691,8 @@ namespace cv {
FT_BBox bbox;
// Flip ( in FreeType coordinates )
FT_Matrix mtx = { 1 << 16 , 0 , 0 , -(1 << 16) };
FT_Outline_Transform(&outline, &mtx);
// FT_Matrix mtx = { 1 << 16 , 0 , 0 , -(1 << 16) };
// FT_Outline_Transform(&outline, &mtx);
// Move to current position ( in FreeType coordinates )
FT_Outline_Translate(&outline, currentPos.x, currentPos.y);
@ -733,13 +708,13 @@ namespace cv {
)
{
bbox.xMin = currentPos.x;
bbox.xMax = currentPos.x + (mFace->glyph->advance.x + mFace->glyph->bitmap_left);
bbox.xMax = currentPos.x + (mFace->glyph->advance.x + mFace->glyph->metrics.horiBearingX);
bbox.yMin = yMin;
bbox.yMax = yMax;
}
// Update current position ( in FreeType coordinates )
currentPos.x += mFace->glyph->advance.x + mFace->glyph->bitmap_left;
currentPos.x += mFace->glyph->advance.x;
currentPos.y += mFace->glyph->advance.y;
// Update BoundaryBox ( in OpenCV coordinates )
@ -772,7 +747,7 @@ namespace cv {
*_baseLine = yMax;
}
return Size(width, height);
return Size(width, height + yMax);
}

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