Initial design of the Powermap class.

2 files changed, 125 insertions, 0 deletions

diff --git a/src/powermap.cc b/src/powermap.cc
new file mode 100644
index 0000000..6a5bba0
--- /dev/null
+++ b/src/powermap.cc
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+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            powermap.cc
+ *
+ *  Fri Apr 17 23:06:12 CEST 2020
+ *  Copyright 2020 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "powermap.h"
+
+#include <cmath>
+
+Power Powermap::map(Power in) const
+{
+	if (in < fixed_map.in) {
+		return a1*pow(in,3) + b1*pow(in,2) + c1*in + d1;
+	}
+	else {
+		return a2*pow(in,3) + b2*pow(in,2) + c2*in + d2;
+	}
+}
+
+void Powermap::reset()
+{
+	min_input = 0.;
+	max_input = 1.;
+	fixed_map = {.5, .5};
+}
+
+void Powermap::setMinInput(Power min_input)
+{
+	this->min_input = min_input;
+}
+
+void Powermap::setMaxInput(Power max_input)
+{
+	this->max_input = max_input;
+}
+
+void Powermap::setFixed(PowerPair fixed)
+{
+	this->fixed = fixed;
+}
+
+void Powermap::updateSpline()
+{
+	// TODO
+}
diff --git a/src/powermap.h b/src/powermap.h
new file mode 100644
index 0000000..8dcccc9
--- /dev/null
+++ b/src/powermap.h
@@ -0,0 +1,59 @@
+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ *            powermap.h
+ *
+ *  Fri Apr 17 23:06:12 CEST 2020
+ *  Copyright 2020 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#pragma once
+
+class Powermap
+{
+	using Power = float;
+	struct PowerPair {
+		Power in;
+		Power out;
+	};
+
+public:
+	Powermap() = default;
+
+	Power map(Power in) const;
+	void reset();
+
+	// set parameters
+	void setMinInput(Power min_input);
+	void setMaxInput(Power max_input);
+	void setFixed(PowerPair fixed);
+
+private:
+	// input parameters
+	Power min_input;
+	Power max_input;
+	PowerPair fixed;
+
+	// spline parameters
+	float a1, b1, c1, d1;
+	float a2, b2, c2, d2;
+
+	void updateSpline();
+};