It’s Just a Flesh Wound

The premise for this assignment was rather vague: tell a story with XML. Basically, we were supposed to design something that would take in camera input and return text output. While trying to figure out how to do this assignment, Heather Velez and I started talking about other projects we wanted to do for this class. Heather had an idea for a project that involved making changes to her limbs. I don’t remember the exact details, but somehow our conversation drifted into the removal of limbs, which naturally led to the Black Knight from “Monty Python and the Holy Grail”:

We designed a program that allows users to chop off the limbs of the Black Knight, and outputs a text file describing the movements of the sword and which limbs had been removed. We adapted Matt Richardson’s “Hand Tracking vs. Skeleton Tracking” assignment to dictate the motion of the sword. When the sword hits one of the limbs, it disappears in a bloody splash.

The entire text file is a bit long and redundant, but here’s a sample that illustrates what it does:

Sword at : (428.41858, 62.20041)
Sword at : (426.7242, 54.39093)
Sword at : (424.91882, 50.942383)
Sword at : (422.85626, 47.382736)
Sword at : (419.5735, 44.53174)
Sword at : (414.76443, 45.7937)
Sword at : (408.78973, 45.679276)
Sword at : (403.00497, 47.999252)
Sword at : (395.86615, 56.521454)
Sword at : (391.11273, 68.21771)
Sword at : (382.39648, 88.004944)
Sword at : (374.6492, 113.11754)
Sword at : (370.87872, 135.67337)
Sword at : (369.41296, 157.94109)
Sword at : (366.09396, 178.29153)
Head is chopped off!
It’s just a flesh wound!

Code:

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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
import ddf.minim.*;
import ddf.minim.signals.*;
import ddf.minim.analysis.*;
import ddf.minim.effects.*;
 
import SimpleOpenNI.*;
SimpleOpenNI kinect;
 
Minim minim; 
AudioPlayer flesh; 
AudioPlayer legs; 
 
PVector swordPos; 
 
PrintWriter output; 
 
boolean headOff = false; 
boolean LArmOff = false; 
boolean LLegOff = false; 
boolean RArmOff = false; 
boolean RLegOff = false; 
 
PImage sword;
PImage bg; 
PImage bkBody, bkHead, bkLArm, bkLLeg, bkRArm, bkRLeg; 
 
void setup() {
  kinect = new SimpleOpenNI(this);
  kinect.enableDepth();
  kinect.enableUser(SimpleOpenNI.SKEL_PROFILE_ALL);
  kinect.setMirror(false);
  kinect.enableRGB();
 
  size(640, 480);
  smooth();
 
  minim = new Minim(this); 
  flesh = minim.loadFile("fleshwound.wav"); 
  legs = minim.loadFile("legs.wav"); 
 
  sword = loadImage("excalibur2.png");
  bg = loadImage("forest2.jpg");
  bkBody = loadImage("bkBody.png"); 
  bkBody.resize(0, 400); 
  bkHead = loadImage("bkHead.png"); 
  bkHead.resize(0, 400); 
  bkLArm = loadImage("bkLArm.png"); 
  bkLArm.resize(0, 400); 
  bkLLeg = loadImage("bkLLeg.png"); 
  bkLLeg.resize(0, 400); 
  bkRArm = loadImage("bkRArm.png"); 
  bkRArm.resize(0, 400); 
  bkRLeg = loadImage("bkRLeg.png"); 
  bkRLeg.resize(0, 400);
 
  PVector swordPos = new PVector();
 
  output = createWriter("blackknight.txt");
}
 
void draw() {
 
  kinect.update();
  image(kinect.rgbImage(), 0, 0);
  background(bg); 
  image(bkBody, width/2 - 100, height/2 - 150); 
 
  if (headOff == false) {
    head();
  } 
 
  if (LArmOff == false) {
    lArm();
  }
 
  if (LLegOff == false) {
    lLeg();
  }
 
  if (RArmOff == false) {
    rArm();
  }
 
  if (RLegOff == false) {
    rLeg();
  } 
 
  IntVector userList = new IntVector();
  kinect.getUsers(userList);
 
  if (userList.size() > 0) {
    int userId = userList.get(0);
 
    float rightArmAngle = getJointAngle(userId, SimpleOpenNI.SKEL_RIGHT_HAND, SimpleOpenNI.SKEL_RIGHT_ELBOW);
    PVector handPos = new PVector();
    kinect.getJointPositionSkeleton(userId, SimpleOpenNI.SKEL_RIGHT_HAND, handPos);
    PVector convertedHandPos = new PVector();
    kinect.convertRealWorldToProjective(handPos, convertedHandPos);
    swordPos = convertedHandPos; 
    output.println("Sword at : (" + swordPos.x + ", " + swordPos.y +")"); 
 
    float newImageWidth = map(convertedHandPos.z, 500, 2000, sword.width/4, sword.width/8);
    float newImageHeight = map(convertedHandPos.z, 500, 2000, sword.height/4, sword.height/8);
 
    //newImageWidth = constrain(newImageWidth, 75, 100);
    newImageWidth = constrain(newImageWidth, 150, 200); 
 
    pushMatrix();
    translate(convertedHandPos.x, convertedHandPos.y);
    println("x: " + convertedHandPos.x + " y: " + convertedHandPos.y); 
    rotate(rightArmAngle*-1);
    rotate(PI/4);
    image(sword, -1 * (newImageWidth/2), 0 - (newImageHeight/2), newImageWidth, newImageHeight);
    popMatrix();
 
    chop(bkHead, headOff, 316, 400, 171, 271); 
    chop(bkLArm, LArmOff, 186, 400, 70, 300); 
    chop(bkLLeg, LLegOff, 185, 411, 246, 450); 
    chop(bkRArm, RArmOff, 284, 514, 80, 293); 
    chop(bkRLeg, RLegOff, 460, 489, 246, 450);
  }
}
 
float getJointAngle(int userId, int jointID1, int jointID2) {
  PVector joint1 = new PVector();
  PVector joint2 = new PVector();
  kinect.getJointPositionSkeleton(userId, jointID1, joint1);
  kinect.getJointPositionSkeleton(userId, jointID2, joint2);
  return atan2(joint1.y-joint2.y, joint1.x-joint2.x);
} 
 
// user-tracking callbacks:
void onNewUser(int userId) {
  kinect.startPoseDetection("Psi", userId);
  println("Started pose detection.");
}
 
void onEndCalibration(int userId, boolean successful) {
  if (successful) {
    println("User calibrated.");
    kinect.startTrackingSkeleton(userId);
  }
  else {
    println("Failed to calibrate user.");
    kinect.startPoseDetection("Psi", userId);
  }
}
 
void onStartPose(String pose, int userId) {
  println("Started pose for user.");
  kinect.stopPoseDetection(userId);
  kinect.requestCalibrationSkeleton(userId, true);
}
 
void head() {
  chopOff(bkHead, headOff);
}
 
void rArm() {
  chopOff(bkRArm, RArmOff);
}
 
void rLeg() {
  chopOff(bkRLeg, RLegOff);
} 
 
void lArm() {
  chopOff(bkLArm, LArmOff);
}
 
void lLeg() {
  chopOff(bkLLeg, LLegOff);
}
 
void chop(PImage img, boolean partOff, int x1, int x2, int y1, int y2) {
  String bodyPart = " "; 
  if (swordPos.x > x1 && swordPos.x < x2 && swordPos.y > y1 && swordPos.y < y2) { 
    if (x1 == 316 && x2 == 400 && y1 == 171 && y2 == 271) { 
      bodyPart = "Head";
      output.println(bodyPart + " is chopped off!");
      output.println("It's just a flesh wound!"); 
      headOff = true; 
     // println(headOff);
    } 
    else if 
      (x1 == 186 && x2 == 400 && y1 == 70 && y2 == 300) { 
      bodyPart = "Left arm";
      output.println(bodyPart + " is chopped off!");
      output.println("It's just a flesh wound!"); 
      LArmOff = true;
    } 
    else if 
      (x1 == 185 && x2 == 411 && y1 == 276 && y2 == 450) { 
      bodyPart = "Left leg";
       output.println(bodyPart + " is chopped off!"); 
       output.println("I'll bite your legs off!"); 
      LLegOff = true;
    } 
    else if 
      (x1 == 284 && x2 == 514 && y1 == 80 && y2 == 293) { 
      bodyPart = "Right arm";
       output.println(bodyPart + " is chopped off!"); 
       output.println("It's just a flesh wound!"); 
      RArmOff = true;
    } 
    else if (x1 == 460 && x2 == 489 && y1 == 246 && y2 == 450) { 
      bodyPart = "Right leg";  
       output.println(bodyPart + " is chopped off!"); 
       output.println("I'll bite your legs off!"); 
      RLegOff = true; 
 
      chopOff(img, partOff);
     // output.println(bodyPart + " is chopped off!"); 
      //partOff = !partOff;
      //    flesh.play();
      // } else {
      // flesh.rewind();  
      // }
    }
  }
}
 
void chopOff(PImage img, boolean partOff) {
  if (partOff) {
    tint(255, 0); 
    image (img, width/2 - 100, height/2 - 150);
    //    int sound = int(random(2)); 
    //    if (sound == 1) {
    //flesh.play();
    // output.println("It's just a flesh wound!");
  } 
  else {
    tint(255, 255); 
    image (img, width/2 - 100, height/2 - 150);
  }
}
 
void keyPressed() {
  output.flush(); 
  output.close(); 
  exit();
}
 
public void stop() {
  flesh.close();
  legs.close();
  minim.stop(); 
  super.stop();
}