From 4c3f7d1290311456519ca2416590c7e62465b7f2 Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Sun, 27 Dec 2020 15:30:33 +0200
Subject: Makes FontData importable resource. Adds multi-channel SDF font
 texture generation and rendering support. Adds per-font oversampling support.
 Adds FontData import plugins (for dynamic fonts, BMFonts and monospaced image
 fonts), font texture cache pre-generation and loading. Adds BMFont binary
 format and outline support.

---
 thirdparty/msdfgen/core/ShapeDistanceFinder.hpp | 56 +++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 thirdparty/msdfgen/core/ShapeDistanceFinder.hpp

(limited to 'thirdparty/msdfgen/core/ShapeDistanceFinder.hpp')

diff --git a/thirdparty/msdfgen/core/ShapeDistanceFinder.hpp b/thirdparty/msdfgen/core/ShapeDistanceFinder.hpp
new file mode 100644
index 0000000000..028738e5c3
--- /dev/null
+++ b/thirdparty/msdfgen/core/ShapeDistanceFinder.hpp
@@ -0,0 +1,56 @@
+
+#include "ShapeDistanceFinder.h"
+
+namespace msdfgen {
+
+template <class ContourCombiner>
+ShapeDistanceFinder<ContourCombiner>::ShapeDistanceFinder(const Shape &shape) : shape(shape), contourCombiner(shape), shapeEdgeCache(shape.edgeCount()) { }
+
+template <class ContourCombiner>
+typename ShapeDistanceFinder<ContourCombiner>::DistanceType ShapeDistanceFinder<ContourCombiner>::distance(const Point2 &origin) {
+    contourCombiner.reset(origin);
+    typename ContourCombiner::EdgeSelectorType::EdgeCache *edgeCache = &shapeEdgeCache[0];
+
+    for (std::vector<Contour>::const_iterator contour = shape.contours.begin(); contour != shape.contours.end(); ++contour) {
+        if (!contour->edges.empty()) {
+            typename ContourCombiner::EdgeSelectorType &edgeSelector = contourCombiner.edgeSelector(int(contour-shape.contours.begin()));
+
+            const EdgeSegment *prevEdge = contour->edges.size() >= 2 ? *(contour->edges.end()-2) : *contour->edges.begin();
+            const EdgeSegment *curEdge = contour->edges.back();
+            for (std::vector<EdgeHolder>::const_iterator edge = contour->edges.begin(); edge != contour->edges.end(); ++edge) {
+                const EdgeSegment *nextEdge = *edge;
+                edgeSelector.addEdge(*edgeCache++, prevEdge, curEdge, nextEdge);
+                prevEdge = curEdge;
+                curEdge = nextEdge;
+            }
+        }
+    }
+
+    return contourCombiner.distance();
+}
+
+template <class ContourCombiner>
+typename ShapeDistanceFinder<ContourCombiner>::DistanceType ShapeDistanceFinder<ContourCombiner>::oneShotDistance(const Shape &shape, const Point2 &origin) {
+    ContourCombiner contourCombiner(shape);
+    contourCombiner.reset(origin);
+
+    for (std::vector<Contour>::const_iterator contour = shape.contours.begin(); contour != shape.contours.end(); ++contour) {
+        if (!contour->edges.empty()) {
+            typename ContourCombiner::EdgeSelectorType &edgeSelector = contourCombiner.edgeSelector(int(contour-shape.contours.begin()));
+
+            const EdgeSegment *prevEdge = contour->edges.size() >= 2 ? *(contour->edges.end()-2) : *contour->edges.begin();
+            const EdgeSegment *curEdge = contour->edges.back();
+            for (std::vector<EdgeHolder>::const_iterator edge = contour->edges.begin(); edge != contour->edges.end(); ++edge) {
+                const EdgeSegment *nextEdge = *edge;
+                typename ContourCombiner::EdgeSelectorType::EdgeCache dummy;
+                edgeSelector.addEdge(dummy, prevEdge, curEdge, nextEdge);
+                prevEdge = curEdge;
+                curEdge = nextEdge;
+            }
+        }
+    }
+
+    return contourCombiner.distance();
+}
+
+}
-- 
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