tei/MapLibreParticleLab
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

rephrase line uniform calculations to match js

Browse Source 
js: 359a576471e20373333cae80a5eccda95ee4cdc2
This commit is contained in:
Ansis Brammanis
2015-01-08 14:40:19 -05:00
parent 59b51f0a9f
commit 166a3e21fa
1 changed files with 17 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
src/mbgl/renderer/painter_line.cpp
View File

@@ -15,13 +15,25 @@ void Painter::renderLine(LineBucket& bucket, util::ptr<StyleLayer> layer_desc, c
const LineProperties &properties = layer_desc->getProperties<LineProperties>();
// the distance over which the line edge fades out.
// Retina devices need a smaller distance to avoid aliasing.
float antialiasing = 1 / state.getPixelRatio();
float width = properties.width;
float offset = properties.gap_width == 0 ? 0 : (properties.gap_width + width) / 2;
float blur = properties.blur + antialiasing;
float inset = std::fmin((std::fmax(-1, offset - width / 2 - antialiasing / 2) + 1), 16.0f);
float outset = std::fmin(offset + width / 2 + antialiasing / 2, 16.0f);
float blur = properties.blur + antialiasing;
float edgeWidth = properties.width / 2.0;
float inset = -1;
float offset = 0;
float shift = 0;
if (properties.gap_width != 0) {
inset = properties.gap_width / 2.0 + antialiasing * 0.5;
edgeWidth = properties.width;
// shift outer lines half a pixel towards the middle to eliminate the crack
offset = inset - antialiasing / 2.0;
}
float outset = offset + edgeWidth + antialiasing / 2.0 + shift;
Color color = properties.color;
color[0] *= properties.opacity;