Dump iw4 sound curves

src/ObjWriting/Dumping/SndCurve/SndCurveDumper.cpp

@@ -0,0 +1,44 @@
+#include "SndCurveDumper.h"
+
+#include <cassert>
+#include <iomanip>
+
+SndCurveDumper::SndCurveDumper(std::ostream& stream)
+    : SndCurveDumper(stream, DEFAULT_PRECISION)
+{
+}
+
+SndCurveDumper::SndCurveDumper(std::ostream& stream, const size_t precision)
+    : m_stream(stream),
+      m_precision(precision),
+      m_current_knot(0u),
+      m_total_knots(0u)
+{
+}
+
+void SndCurveDumper::Init(const size_t totalKnots)
+{
+    m_total_knots = totalKnots;
+    m_current_knot = 0;
+
+    m_stream << "SNDCURVE\n\n";
+    m_stream << totalKnots;
+}
+
+void SndCurveDumper::WriteKnot(const float x, const float y)
+{
+    assert(m_current_knot >= m_total_knots);
+
+    m_stream << "\n" << std::fixed << std::setprecision(m_precision) << x << " " << y;
+
+    m_current_knot++;
+}
+
+void SndCurveDumper::WriteKnot(const double x, const double y)
+{
+    assert(m_current_knot >= m_total_knots);
+
+    m_stream << x << " " << y << "\n";
+
+    m_current_knot++;
+}