initial commit

src/ui/ColorMap.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include "core/Types.h"
+#include <vector>
+
+namespace baudline {
+
+class ColorMap {
+public:
+    explicit ColorMap(ColorMapType type = ColorMapType::Magma);
+
+    void setType(ColorMapType type);
+    ColorMapType type() const { return type_; }
+
+    // Map a normalized value [0,1] to RGB.
+    Color3 map(float value) const;
+
+    // Map dB value to RGB given current range.
+    Color3 mapDB(float dB, float minDB, float maxDB) const;
+
+    // Get the full 256-entry LUT.
+    const std::vector<Color3>& lut() const { return lut_; }
+
+private:
+    void buildLUT();
+
+    ColorMapType        type_;
+    std::vector<Color3> lut_;  // 256 entries
+};
+
+} // namespace baudline