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我目前在美術學士學位課程，最近我開始嘗試通過閱讀Greg Borenstein的「Making Things See」來學習編程。Kinect。我如何與多個質量中心合作，而不會相互影響其他功能？
我正在開發的作品是試圖追蹤多個質心，因爲觀衆在使用Kinect時在畫廊空間中移動。我希望觀衆在屏幕上留下痕跡，當他們靠近某些區域時，他們的接近將通過線或其他方式顯示出來。我設法做出一條線索，但一旦有人進入視線，他們的關鍵點就會突然相連。 '鄰近線'也似乎只適用於當前用戶，而不適用於以前的用戶。
我想我的問題真的歸結爲如何隔離每個新用戶，以便我可以創建適用於所有這些函數或類但不相互干擾的函數或類。
這裏的程序至今...
import processing.opengl.*;
import SimpleOpenNI.*;
import peasy.*;
PeasyCam cam;
SimpleOpenNI kinect;
ArrayList<PVector> trails;
Hotpoint piece;
PVector currentPosition;
PVector previousPosition;
int pieceX = 0;
int pieceY = 0;
int pieceZ = 2000;
int pieceSize = 500;
void setup() {
size(1280, 680, OPENGL);
kinect = new SimpleOpenNI(this);
kinect.enableDepth();
kinect.enableUser(SimpleOpenNI.SKEL_PROFILE_NONE);
kinect.setMirror(true);
trails = new ArrayList();
piece = new Hotpoint(pieceX, pieceY, pieceZ, pieceSize);
cam = new PeasyCam(this, 0, 0, 0, 1000);
}
void draw() {
background(255);
kinect.update();
rotateX(radians(180));
lights();
stroke(0);
strokeWeight(3);
IntVector userList = new IntVector();
kinect.getUsers(userList);
piece.draw();
for (int i=0; i<userList.size(); i++) {
int userId = userList.get(i);
PVector positionCenter = new PVector();
kinect.getCoM(userId, positionCenter);
trails.add(positionCenter);
createTrail();
piece.check(positionCenter);
if(piece.check(positionCenter) == true) {
stroke(255, 0, 0);
line(positionCenter.x, positionCenter.y, positionCenter.z,
pieceX, pieceY, pieceZ);
stroke(0);
}
}
}
void createTrail() {
for (int e=1; e < trails.size(); e++) {
currentPosition = trails.get(e);
previousPosition = trails.get(e-1);
if (currentPosition.z < 1) {
trails.clear();
}
else {
stroke(0);
line(previousPosition.x, previousPosition.y, previousPosition.z,
currentPosition.x, currentPosition.y, currentPosition.z);
}
}
}
這是HOTPOINT類部分...
class Hotpoint {
PVector center;
color fillColor;
color strokeColor;
int size;
int pointsIncluded;
int maxPoints;
boolean wasJustHit;
int threshold;
Hotpoint(float centerX, float centerY, float centerZ, int boxSize) {
center = new PVector(centerX, centerY, centerZ);
size = boxSize;
pointsIncluded = 0;
maxPoints = 1000;
threshold = 0;
strokeColor = color(random(255), random(255), random(255));
fillColor = 0;
}
void setThreshold(int newThreshold){
threshold = newThreshold;
}
void setMaxPoints(int newMaxPoints){
maxPoints = newMaxPoints;
}
void setColor(float red, float blue, float green){
fillColor = strokeColor = color(red, blue, green);
}
boolean check(PVector point) {
boolean result = false;
if (point.x > center.x - size/2 && point.x < center.x + size/2) {
if (point.y > center.y - size/2 && point.y < center.y + size/2) {
if (point.z > center.z - size/2 && point.z < center.z + size/2) {
result = true;
pointsIncluded++;
}
}
}
return result;
}
void draw() {
pushMatrix();
translate(center.x, center.y, center.z);
shapeMode(LINES);
noFill();
stroke(red(strokeColor), blue(strokeColor), green(strokeColor), 255);
box(size);
popMatrix();
}
float percentIncluded() {
return map(pointsIncluded, 0, maxPoints, 0, 1);
}
boolean currentlyHit() {
return (pointsIncluded > threshold);
}
boolean isHit() {
return currentlyHit() && !wasJustHit;
}
void clear() {
wasJustHit = currentlyHit();
pointsIncluded = 0;
}
}
任何幫助將非常感激！
編輯：
謝謝你這麼多的時間和你的答案@ jesses.co.tt但我一直無法理解它... 例如，是在環userList與用戶數組不一樣嗎？ 我很擔心我一次只問一件事，所以我已經把它分解開來，試圖首先了解沒有人聯繫的多條路線圖。
import processing.opengl.*;
import SimpleOpenNI.*;
import peasy.*;
SimpleOpenNI kinect;
PeasyCam cam;
ArrayList<PVector> trails1;
ArrayList<PVector> trails2;
PVector currentPosition;
PVector previousPosition;
void setup() {
size(1280, 800, OPENGL);
kinect = new SimpleOpenNI(this);
kinect.enableDepth();
kinect.enableUser(SimpleOpenNI.SKEL_PROFILE_NONE);
kinect.setMirror(true);
trails1 = new ArrayList();
trails2 = new ArrayList();
cam = new PeasyCam(this, 0, 0, 0, 1000);
}
void draw() {
kinect.update();
rotateX(radians(180));
background(255);
IntVector userList = new IntVector();
kinect.getUsers(userList);
//println(userList);
for (int i=0; i<userList.size(); i++) {
int userId = userList.get(i);
//println(userId);
PVector positionCenter = new PVector();
kinect.getCoM(userId, positionCenter);
stroke(0);
strokeWeight(10);
point(positionCenter.x, positionCenter.y, positionCenter.z);
if (userId == 1) {
trails1.add(positionCenter);
createTrail1();
}
else if (userId == 2) {
trails2.add(positionCenter);
createTrail2();
}
}
}
void createTrail1() {
for (int e=1; e < trails1.size(); e++) {
currentPosition = trails1.get(e);
previousPosition = trails1.get(e-1);
if (currentPosition.z < 1) { // [possibly x or y or all?]
trails1.clear();
}
else {
// if (currentPosition.x != 0 || previousPosition.x != 0) { // [not working]
stroke(0);
line(previousPosition.x, previousPosition.y, previousPosition.z,
currentPosition.x, currentPosition.y, currentPosition.z);
//trails.clear();
}
}
}
void createTrail2() {
for (int e=1; e < trails2.size(); e++) {
currentPosition = trails2.get(e);
previousPosition = trails2.get(e-1);
if (currentPosition.z < 1) { // [possibly x or y or all?]
trails2.clear();
}
else {
// if (currentPosition.x != 0 || previousPosition.x != 0) { // [not working]
stroke(0);
line(previousPosition.x, previousPosition.y, previousPosition.z,
currentPosition.x, currentPosition.y, currentPosition.z);
//trails.clear();
}
}
}
那麼，這會工作的兩個人，我可以寫一個很長的窘況方案，爲大型有限數量的人工作，但我真的希望是，它是動態的... 'if（userId == 1）{'，我希望它適用於每個人，然後在步道部分，需要有一系列新的路徑，以便每當新人進入時查看我會使用'void onNewUser（int userId）{'或其他...？
哎呀，我忘了，包括對HOTPOINT類，所以這是被編輯在現在！ – basicallyright 2013-04-24 14:14:37