initial commit

libraries/FastLED/examples/Downscale/src/xypaths.cpp

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+
+
+#include "fl/xypath.h"
+#include "fl/vector.h"
+#include "fl/map_range.h"
+
+
+#include "xypaths.h"
+
+using namespace fl;
+
+namespace {
+    fl::shared_ptr<CatmullRomParams> make_path(int width, int height) {
+        // make a triangle.
+        fl::shared_ptr<CatmullRomParams> params = fl::make_shared<CatmullRomParams>();
+        vector_inlined<vec2f, 5> points;
+        points.push_back(vec2f(0.0f, 0.0f));
+        points.push_back(vec2f(width / 3, height / 2));
+        points.push_back(vec2f(width - 3, height - 1));
+        points.push_back(vec2f(0.0f, height - 1));
+        points.push_back(vec2f(0.0f, 0.0f));
+        for (auto &p : points) {
+            p.x = map_range<float, float>(p.x, 0.0f, width - 1, -1.0f, 1.0f);
+            p.y = map_range<float, float>(p.y, 0.0f, height - 1, -1.0f, 1.0f);
+            params->addPoint(p);
+        }
+        return params;
+    }
+}
+
+fl::vector<XYPathPtr> CreateXYPaths(int width, int height) {
+    fl::vector<XYPathPtr> out;
+    out.push_back(XYPath::NewCirclePath(width, height));
+    out.push_back(XYPath::NewRosePath(width, height));
+    out.push_back(XYPath::NewHeartPath(width, height));
+    out.push_back(XYPath::NewArchimedeanSpiralPath(width, height));
+    out.push_back(XYPath::NewPhyllotaxisPath(width, height));
+    out.push_back(XYPath::NewGielisCurvePath(width, height));
+    out.push_back(XYPath::NewCatmullRomPath(width, height, make_path(width, height)));
+    return out;
+}