1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
MultiTouchXYViewController.swift
Nikhil Singh, Dr. Richard Boulanger
Adapted from the Csound iOS Examples by Steven Yi and Victor Lazzarini
This file is part of Csound iOS SwiftExamples.
The Csound for iOS Library 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 2.1 of the License, or (at your option) any later version.
Csound 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 Csound; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA
*/
import UIKit
class MultiTouchXYViewController: BaseCsoundViewController {
private var touchIds = [Int](repeatElement(0, count: 10))
private var touchArray = [UITouch?](repeatElement(nil, count: 10))
private var touchesCount = 0
fileprivate var touchX = [Float](repeatElement(0, count: 10))
fileprivate var touchY = [Float](repeatElement(0, count: 10))
fileprivate var touchXPtr = [UnsafeMutablePointer<Float>?](repeatElement(nil, count: 10))
fileprivate var touchYPtr = [UnsafeMutablePointer<Float>?](repeatElement(nil, count: 10))
@IBOutlet var touchesLabel: UILabel!
override func viewDidLoad() {
title = "15. MultiTouch XY Pad"
super.viewDidLoad()
}
override func viewDidAppear(_ animated: Bool) {
let tempFile = Bundle.main.path(forResource: "multiTouchXY", ofType: "csd")
csound.stop()
csound = CsoundObj()
csound.addBinding(self)
csound.play(tempFile)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func cleanup() {
for i in 0 ..< 10 {
touchXPtr[i] = nil
touchYPtr[i] = nil
}
}
func getTouchIdAssignment() -> Int {
for i in 0 ..< 10 {
if touchIds[i] == 0 {
return i
}
}
return -1
}
func getTouchId(_ touch: UITouch) -> Int {
for i in 0 ..< 10 {
if touchArray[i] == touch {
return i
}
}
return -1
}
// MARK: Touch Handling Code
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let touchId = getTouchIdAssignment()
if touchId != -1 {
touchArray[touchId] = touch
touchIds[touchId] = 1
let pt = touch.location(in: view)
touchX[touchId] = Float(pt.x / view.frame.size.width)
touchY[touchId] = Float(1 - (pt.y / view.frame.size.height)) // Invert Y axis
touchXPtr[touchId]?.pointee = touchX[touchId]
touchYPtr[touchId]?.pointee = touchY[touchId]
csound.sendScore("i1.\(touchId) 0 -1 \(touchId)")
touchesCount += touches.count
touchesLabel.text = "Touches \(touchesCount)"
if touchesCount > (event?.allTouches?.count)! {
touchesCount = (event?.allTouches?.count)!
}
}
}
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let touchId = getTouchId(touch)
if touchId != -1 {
let pt = touch.location(in: view)
touchX[touchId] = Float(pt.x / view.frame.size.width)
touchY[touchId] = Float(1 - (pt.y / view.frame.size.height))
}
}
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let touchId = getTouchId(touch)
if touchId != -1 {
touchIds[touchId] = 0
touchArray[touchId] = nil
csound.sendScore("i-1.\(touchId) 0 0 \(touchId)")
}
}
}
override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch in touches {
let touchId = getTouchId(touch)
if touchId != -1 {
touchIds[touchId] = 0
touchArray[touchId] = nil
csound.sendScore("i-1.\(touchId) 0 0 \(touchId)")
}
}
}
@IBAction func showInfo(_ sender: UIButton) {
infoVC.preferredContentSize = CGSize(width: 300, height: 120)
infoText = "Multitouch XY Pad demonstrates a multitouch performance surface. Each touch is dynamically mapped to a unique instance of a Csound instrument."
displayInfo(sender)
}
}
extension MultiTouchXYViewController: CsoundBinding {
func setup(_ csoundObj: CsoundObj!) {
for i in 0 ..< 10 {
touchXPtr[i] = csoundObj.getInputChannelPtr("touch.\(i).x", channelType: CSOUND_CONTROL_CHANNEL)
touchYPtr[i] = csoundObj.getOutputChannelPtr("touch.\(i).y", channelType: CSOUND_CONTROL_CHANNEL)
}
}
func updateValuesToCsound() {
for i in 0 ..< 10 {
touchXPtr[i]?.pointee = touchX[i]
touchYPtr[i]?.pointee = touchY[i]
}
}
}
|
