Add Text rendering

- Add FreeType as dependency - Add MsdfGen as dependency - Add MsdfAtlasGen as dependency
2023-05-08 22:12:19 +02:00
parent ad69293faa
commit 4e466a1fce
190 changed files with 44693 additions and 46 deletions
@@ -0,0 +1,61 @@
+
+#include "rectangle-packing.h"
+
+#include <vector>
+#include "RectanglePacker.h"
+
+namespace msdf_atlas {
+
+static void copyRectanglePlacement(Rectangle &dst, const Rectangle &src) {
+    dst.x = src.x;
+    dst.y = src.y;
+}
+
+static void copyRectanglePlacement(OrientedRectangle &dst, const OrientedRectangle &src) {
+    dst.x = src.x;
+    dst.y = src.y;
+    dst.rotated = src.rotated;
+}
+
+template <typename RectangleType>
+int packRectangles(RectangleType *rectangles, int count, int width, int height, int padding) {
+    if (padding)
+        for (int i = 0; i < count; ++i) {
+            rectangles[i].w += padding;
+            rectangles[i].h += padding;
+        }
+    int result = RectanglePacker(width+padding, height+padding).pack(rectangles, count);
+    if (padding)
+        for (int i = 0; i < count; ++i) {
+            rectangles[i].w -= padding;
+            rectangles[i].h -= padding;
+        }
+    return result;
+}
+
+template <class SizeSelector, typename RectangleType>
+std::pair<int, int> packRectangles(RectangleType *rectangles, int count, int padding) {
+    std::vector<RectangleType> rectanglesCopy(count);
+    int totalArea = 0;
+    for (int i = 0; i < count; ++i) {
+        rectanglesCopy[i].w = rectangles[i].w+padding;
+        rectanglesCopy[i].h = rectangles[i].h+padding;
+        totalArea += rectangles[i].w*rectangles[i].h;
+    }
+    std::pair<int, int> dimensions;
+    SizeSelector sizeSelector(totalArea);
+    int width, height;
+    while (sizeSelector(width, height)) {
+        if (!RectanglePacker(width+padding, height+padding).pack(rectanglesCopy.data(), count)) {
+            dimensions.first = width;
+            dimensions.second = height;
+            for (int i = 0; i < count; ++i)
+                copyRectanglePlacement(rectangles[i], rectanglesCopy[i]);
+            --sizeSelector;
+        } else
+            ++sizeSelector;
+    }
+    return dimensions;
+}
+
+}