上禮拜所教的是用五根手指頭畫出線條

程式碼:
import de.voidplus.leapmotion.*;
LeapMotion leap;
PVector [][] pt = new PVector[5][50];//PVector[手指數量][後面點的數量(數量越多長度越長)]
void setup(){
size(640,480,P3D);
for(int f=0;f<5;f++){
for(int i=0;i<50;i++)
pt[f][i] = new PVector(0,0,0);
}
leap = new LeapMotion(this);
colorMode(HSB,100);
}
void draw(){
background(0);
for(int f=0;f<5;f++){
for(int i=49;i>0;i--){pt[f][i].x=pt[f][i-1].x;pt[f][i].y=pt[f][i-1].y;}
}
for(Hand hand : leap.getHands()){
for(Finger finger : hand.getFingers()){
int f=finger.getType();//設函數(手指)
PVector now = finger.getPosition();//手指座標
pt[f][0].x = now.x;
pt[f][0].y = now.y;
}
}
for(int f=0;f<5;f++){
stroke(f*20,100,100);
for(int i=1;i<50;i++)
line(pt[f][i].x,pt[f][i].y,pt[f][i].z,pt[f][i-1].x,pt[f][i-1].y,pt[f][i-1].z);
}
}
不過上次所畫出來的線只限於在2D平面上,並沒有3D的效果
今天所要改的地方就是
把2D的手畫線改成3D


這是讓畫面轉向後出現的畫面


發現某些方向線會成一平面
這代表了z軸沒有改變方向
程式碼:
import de.voidplus.leapmotion.*;
LeapMotion leap;
PVector [][] pt = new PVector[5][50];
void setup() {
size(640, 480, P3D);
for (int f=0; f<5; f++) {
for (int i=0; i<50; i++)
pt[f][i] = new PVector(0, 0, 0);
}
leap = new LeapMotion(this);
colorMode(HSB, 100);
}
void draw() {
background(0);
stroke(#30BF99);
for (int f=0; f<5; f++) {
for (int i=49; i>0; i--) {
pt[f][i].x=pt[f][i-1].x;
pt[f][i].y=pt[f][i-1].y;
pt[f][i].z=pt[f][i-1].z;
}
}
for (Hand hand : leap.getHands ()) {
for (Finger finger : hand.getFingers ()) {
int f=finger.getType();
PVector now = finger.getPosition();
pt[f][0].x = now.x;
pt[f][0].y = now.y;
pt[f][0].z = now.z;
if (f==1) println(now);//印出數值
}
}
translate(width/2, height/2);
rotateY(radians(frameCount));
translate(-width/2, -height/2);//使畫面轉向
for (int f=0; f<5; f++) {
stroke(f*20, 100, 100);
for (int i=1; i<50; i++)
line(pt[f][i].x, pt[f][i].y, pt[f][i].z, pt[f][i-1].x, pt[f][i-1].y, pt[f][i-1].z);
}
}
看出印出的數字發現
z軸的數值怪怪的(數值改變過大)
所以我們要改善這項錯誤
改善過後明顯得有了前後的方向
(圖中平面為xy面)

程式碼:
import de.voidplus.leapmotion.*;
LeapMotion leap;
PVector [][] pt = new PVector[5][50];
void setup() {
size(640, 480, P3D);
colorMode(HSB, 100);
for (int f=0; f<5; f++)
for (int i=0; i<50; i++)
pt[f][i] = new PVector(0, 0, 0);
leap = new LeapMotion(this);
}
void draw() {
background(0);
stroke(#30BF99);
for (int f=0; f<5; f++)
for (int i=49; i>0; i--) {
pt[f][i].x=pt[f][i-1].x;
pt[f][i].y=pt[f][i-1].y;
pt[f][i].z=pt[f][i-1].z;
}
for (Hand hand : leap.getHands ()) {
for (Finger finger : hand.getFingers ()) {
int f=finger.getType();
PVector now = finger.getPosition();
pt[f][0].x = now.x;
pt[f][0].y = now.y;
pt[f][0].z = now.z*2-90;//數值要自己抓
if (f==1) println(now);
}
}
translate(width/2, height/2,0);
rotateY(radians(frameCount/2.0));
translate(-width/2, -height/2,0);
for (int f=0; f<5; f++) {
stroke(f*20, 100, 100);
for (int i=1; i<50; i++){
stroke(f*20,100,100);
line(pt[f][i].x, pt[f][i].y, pt[f][i].z, pt[f][i-1].x, pt[f][i-1].y, pt[f][i-1].z);
}
}
stroke(60,100,100);
for(int i=0;i<640;i+=20)
for(int j=0;j<480;j+=20)
{noFill(); rect(i,j,20,20);}//畫出平面
}
接著我們要做的是
左手是調色盤
右手是畫筆
來去動手做吧
先使左手為圓
右手為畫筆

程式碼:
import de.voidplus.leapmotion.*;
LeapMotion leap;
void setup(){
size(640,480,P3D);
leap = new LeapMotion(this);
}
void draw(){
background(255);
for(Hand hand : leap.getHands()){
PVector pos = hand.getPosition();
if(hand.isLeft()){//若為左手
ellipse(pos.x,pos.y,100,100);//出現圓
}
else if(hand.isRight()){//若為右手
rect(pos.x,pos.y,10,150);//出現長方形
}
}
}
讓四周有顏色的圓可以上色
只是現在還沒不能使棒棒變色

程式碼:
import de.voidplus.leapmotion.*;
LeapMotion leap;
void setup(){
size(640,480,P3D);
leap = new LeapMotion(this);
}
void draw(){
background(255);
for(Hand hand : leap.getHands()){
PVector pos = hand.getPosition();
if(hand.isLeft()){
noFill(); ellipse(pos.x,pos.y,100,100);
fill(255,0,0); ellipse(pos.x+150,pos.y,30,30);
fill(255,255,0); ellipse(pos.x+120,pos.y-40,30,30);
fill(255,255,255); ellipse(pos.x+90,pos.y-60,30,30);
fill(0,255,0); ellipse(pos.x+30,pos.y-60,30,30);
fill(0,0,255); ellipse(pos.x-20,pos.y-60,30,30);//四周有顏色的圓
}
else if(hand.isRight()){
rect(pos.x,pos.y,10,150);
}
}
}
可以讓棒棒改變顏色


程式碼:
import de.voidplus.leapmotion.*;
LeapMotion leap;
void setup() {
size(640, 480, P3D);
leap = new LeapMotion(this);
}
color nowColor = color(255, 0, 0);
PVector leftPos;
void draw() {
background(255);
for (Hand hand : leap.getHands ()) {
PVector pos = hand.getPosition();
if (hand.isLeft()) {
noFill();
ellipse(pos.x, pos.y, 100, 100);
fill(255, 0, 0);
ellipse(pos.x+150, pos.y, 30, 30);
fill(255, 255, 0);
ellipse(pos.x+120, pos.y-40, 30, 30);
fill(255, 255, 255);
ellipse(pos.x+90, pos.y-60, 30, 30);
fill(0, 255, 0);
ellipse(pos.x+30, pos.y-60, 30, 30);
fill(0, 0, 255);
ellipse(pos.x-20, pos.y-60, 30, 30);
} else if (hand.isRight()) {
fill(nowColor) rect(pos.x, pos.y, 10, 150);
println(leftPos);
println(pos);
if (dist(pos.x+120, pos.y-40)<30)
{
nowColor = color(255, 255, 0);
}
}
}
}
(圖中平面為xy面)

程式碼:
import de.voidplus.leapmotion.*;
LeapMotion leap;
PVector [][] pt = new PVector[5][50];
void setup() {
size(640, 480, P3D);
colorMode(HSB, 100);
for (int f=0; f<5; f++)
for (int i=0; i<50; i++)
pt[f][i] = new PVector(0, 0, 0);
leap = new LeapMotion(this);
}
void draw() {
background(0);
stroke(#30BF99);
for (int f=0; f<5; f++)
for (int i=49; i>0; i--) {
pt[f][i].x=pt[f][i-1].x;
pt[f][i].y=pt[f][i-1].y;
pt[f][i].z=pt[f][i-1].z;
}
for (Hand hand : leap.getHands ()) {
for (Finger finger : hand.getFingers ()) {
int f=finger.getType();
PVector now = finger.getPosition();
pt[f][0].x = now.x;
pt[f][0].y = now.y;
pt[f][0].z = now.z*2-90;//數值要自己抓
if (f==1) println(now);
}
}
translate(width/2, height/2,0);
rotateY(radians(frameCount/2.0));
translate(-width/2, -height/2,0);
for (int f=0; f<5; f++) {
stroke(f*20, 100, 100);
for (int i=1; i<50; i++){
stroke(f*20,100,100);
line(pt[f][i].x, pt[f][i].y, pt[f][i].z, pt[f][i-1].x, pt[f][i-1].y, pt[f][i-1].z);
}
}
stroke(60,100,100);
for(int i=0;i<640;i+=20)
for(int j=0;j<480;j+=20)
{noFill(); rect(i,j,20,20);}//畫出平面
}
接著我們要做的是
左手是調色盤
右手是畫筆
來去動手做吧
先使左手為圓
右手為畫筆

程式碼:
import de.voidplus.leapmotion.*;
LeapMotion leap;
void setup(){
size(640,480,P3D);
leap = new LeapMotion(this);
}
void draw(){
background(255);
for(Hand hand : leap.getHands()){
PVector pos = hand.getPosition();
if(hand.isLeft()){//若為左手
ellipse(pos.x,pos.y,100,100);//出現圓
}
else if(hand.isRight()){//若為右手
rect(pos.x,pos.y,10,150);//出現長方形
}
}
}
讓四周有顏色的圓可以上色
只是現在還沒不能使棒棒變色

程式碼:
import de.voidplus.leapmotion.*;
LeapMotion leap;
void setup(){
size(640,480,P3D);
leap = new LeapMotion(this);
}
void draw(){
background(255);
for(Hand hand : leap.getHands()){
PVector pos = hand.getPosition();
if(hand.isLeft()){
noFill(); ellipse(pos.x,pos.y,100,100);
fill(255,0,0); ellipse(pos.x+150,pos.y,30,30);
fill(255,255,0); ellipse(pos.x+120,pos.y-40,30,30);
fill(255,255,255); ellipse(pos.x+90,pos.y-60,30,30);
fill(0,255,0); ellipse(pos.x+30,pos.y-60,30,30);
fill(0,0,255); ellipse(pos.x-20,pos.y-60,30,30);//四周有顏色的圓
}
else if(hand.isRight()){
rect(pos.x,pos.y,10,150);
}
}
}
可以讓棒棒改變顏色


程式碼:
import de.voidplus.leapmotion.*;
LeapMotion leap;
void setup() {
size(640, 480, P3D);
leap = new LeapMotion(this);
}
color nowColor = color(255, 0, 0);
PVector leftPos;
void draw() {
background(255);
for (Hand hand : leap.getHands ()) {
PVector pos = hand.getPosition();
if (hand.isLeft()) {
noFill();
ellipse(pos.x, pos.y, 100, 100);
fill(255, 0, 0);
ellipse(pos.x+150, pos.y, 30, 30);
fill(255, 255, 0);
ellipse(pos.x+120, pos.y-40, 30, 30);
fill(255, 255, 255);
ellipse(pos.x+90, pos.y-60, 30, 30);
fill(0, 255, 0);
ellipse(pos.x+30, pos.y-60, 30, 30);
fill(0, 0, 255);
ellipse(pos.x-20, pos.y-60, 30, 30);
} else if (hand.isRight()) {
fill(nowColor) rect(pos.x, pos.y, 10, 150);
println(leftPos);
println(pos);
if (dist(pos.x+120, pos.y-40)<30)
{
nowColor = color(255, 255, 0);
}
}
}
}
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