view Source/TouchKeys/KeyTouchFrame.h @ 20:dfff66c07936

Lots of minor changes to support building on Visual Studio. A few MSVC-specific #ifdefs to eliminate things Visual Studio doesn't like. This version now compiles on Windows (provided liblo, Juce and pthread are present) but the TouchKeys device support is not yet enabled. Also, the code now needs to be re-checked on Mac and Linux.

/*
  TouchKeys: multi-touch musical keyboard control software
  Copyright (c) 2013 Andrew McPherson

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
 
  This program 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 General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
  =====================================================================
 
  KeyTouchFrame.h: class that represents the data of one frame from the TouchKeys.
*/

#ifndef KEY_TOUCH_FRAME_H
#define KEY_TOUCH_FRAME_H

#define kWhiteFrontBackCutoff (6.5/19.0)	// Border between 2- and 1-dimensional sensing regions

// This class holds one frame of key touch data, both raw values and unique ID numbers
// that help connect one frame to the next

class KeyTouchFrame {
public:
	KeyTouchFrame() : count(0), locH(-1.0), nextId(0), white(true) {
		for(int i = 0; i < 3; i++) {
			ids[i] = -1;
			locs[i] = -1.0;
			sizes[i] = 0.0;
		}
	}
	
	KeyTouchFrame(int newCount, float* newLocs, float *newSizes, float newLocH, bool newWhite)
	: count(newCount), locH(newLocH), nextId(0), white(newWhite) {
		for(int i = 0; i < count; i++) {
			ids[i] = -1;
			locs[i] = newLocs[i];
			sizes[i] = newSizes[i];
		}
		for(int i = count; i < 3; i++) {
			ids[i] = -1;
			locs[i] = -1.0;
			sizes[i] = 0.0;
		}
	}
	
	KeyTouchFrame(const KeyTouchFrame& copy) : count(copy.count), locH(copy.locH), nextId(copy.nextId), white(copy.white) {
		for(int i = 0; i < 3; i++) {
			ids[i] = copy.ids[i];
			locs[i] = copy.locs[i];
			sizes[i] = copy.sizes[i];
		}
	}
	
	// Horizontal location only makes sense in the front part of the key.  Return the
	// value if applicable, otherwise -1.
	float horizontal(int index) const {
		//if(!white)
		//	return -1.0;
		if(index >= count || index > 2 || index < 0)
			return -1.0;
		//if(locs[index] < kWhiteFrontBackCutoff) // FIXME: need better hardware-dependent solution to this
			return locH;
		//return -1.0;
	}
	
	int count;			// Number of active touches (0-3)
	int ids[3];			// Unique ID numbers for current touches
	float locs[3];		// Vertical location of current touches
	float sizes[3];		// Contact area of current touches
	float locH;			// Horizontal location (white keys only)
	int nextId;			// ID number to be used for the next new touch added
	bool white;			// Whether this is a white key
};

#endif /* KEY_TOUCH_FRAME_H */