FGFS-4.1/OpenSceneGraph
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Improved SDF generation

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This commit is contained in:
Robert Osfield
2017-09-29 10:39:02 +01:00
parent 1f36f5bd8d
commit beb5801eee
1 changed files with 4 additions and 5 deletions
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9
src/osgText/Glyph.cpp
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@@ -156,7 +156,7 @@ void GlyphTexture::copyGlyphImage(Glyph* glyph)
int dest_rows = _image->t();
unsigned char* dest_data = _image->data(glyph->getTexturePositionX(),glyph->getTexturePositionY());
int search_distance = glyph->getFontResolution().second/8;
int search_distance = glyph->getFontResolution().second/4;
int left = -search_distance;
int right = glyph->s()+search_distance;
@@ -165,7 +165,7 @@ void GlyphTexture::copyGlyphImage(Glyph* glyph)
float multiplier = 1.0/255.0f;
float max_distance = glyph->getFontResolution().first/4;
float max_distance = sqrtf(float(search_distance)*float(search_distance)*2.0);
int num_channels = TEXTURE_IMAGE_NUM_CHANNELS;
@@ -175,10 +175,9 @@ void GlyphTexture::copyGlyphImage(Glyph* glyph)
if ((lower+glyph->getTexturePositionY())<0) lower = -glyph->getTexturePositionY();
if ((upper+glyph->getTexturePositionY())>=dest_rows) upper = dest_rows-glyph->getTexturePositionY()-1;
bool use_SDF_for_Outline = true;
float outer_outline_distance = float(glyph->getFontResolution().first)*0.14f;
float outer_outline_distance = float(glyph->getFontResolution().first)*0.1f;
float inner_outline_distance = outer_outline_distance*0.5f;
unsigned char full_on = 255;
@@ -198,7 +197,7 @@ void GlyphTexture::copyGlyphImage(Glyph* glyph)
unsigned char outer_max_value = center_value;
float center_value_f = center_value*multiplier;
float min_distance = FLT_MAX;
float min_distance = max_distance;
if (center_value>0 && center_value<full_on)
{