[TODO]
上課內容:
cwa typhoon images(照片匯入)
// week05_1_cwa_typhoon_images // 存檔後,Ctrl-k 開檔案總管,看 data 目錄裡,一堆圖檔 PImage img = loadImage("TWI_IR1_CR_800-2024-10-02-08-00.jpg"); size(800,800); background(img); //若圖的大小,與size()相同,可直接把圖當背景
cwa typhoon images
// week05_2_cwa_typhoon_array_loadStrings // 老師準備了 list.txt 裡面有299行(很多圖檔的檔名) int N=299; //剛好有299張圖 PImage[] imgs = new PImage[299]; //準備好299張圖對應的陣列 void setup(){ size(800,800); //把list.txt的299行,放入filenames裡 String[] filenames = loadStrings("list.txt"); for(int i=0; i<N; i++){ //把每一張圖都讀進來 imgs[i]= loadImage(filenames[i]); } //這個迴圈會跑很久,因為圖檔很多 } void draw(){ int i = frameCount % N; //照時間輪 %N 取餘數,以免超過陣列大小 background(imgs[i]); //現在要顯示第i張圖 }cwa typhoon images(移動+縮放)
// week05_3_cwa_typhoon_2750 // 整合上週 & 今天的程式 PImage img; void setup(){ size(500,500); //小視窗、大圖片 img = loadImage("LCC_VIS_TRGB_2750-2024-10-02-07-40.jpg"); } float s=1.0, x=0, y=0; float realX=0, realY=0; void draw(){ background(255); //白背景 translate(x,y); //要加上一個移動量 x,y scale(s); image(img, 0, 0); } void mouseDragged(){ //void mouseDragged() x += mouseX - pmouseX; y += mouseY - pmouseY; } void mouseWheel(MouseEvent e){ realX = (mouseX - x)/s; //地圖上,真的座標 realY = (mouseY - y)/s; //地圖上,真的座標 float oldS = s; if(e.getCount()<0) s*=1.1; //大於、小於,可決定縮放的方向 else s*=0.9; x = x+realX*oldS - realX*s; y = y+realY*oldS - realY*s; }cwa typhoon images(補充:超出圖片,縮小會自動拉回)
// week05_3_cwa_typhoon_2750 // 整合上週 & 今天的程式 PImage img; void setup(){ size(500,500); //小視窗、大圖片 img = loadImage("LCC_VIS_TRGB_2750-2024-10-02-07-40.jpg"); } float s=1.0, x=0, y=0; float realX=0, realY=0; void draw(){ background(255); //白背景 translate(x,y); //要加上一個移動量 x,y scale(s); image(img, 0, 0); } void mouseDragged(){ //void mouseDragged() x += mouseX - pmouseX; y += mouseY - pmouseY; } void mouseWheel(MouseEvent e){ realX = (mouseX - x)/s; //地圖上,真的座標 realY = (mouseY - y)/s; //地圖上,真的座標 float oldS = s; if(e.getCount()<0) s*=1.1; //大於、小於,可決定縮放的方向 else s*=0.9; x = x+realX*oldS - realX*s; y = y+realY*oldS - realY*s; if(x>0) x=0; if(y>0) y=0; if(s<0.2){ x=0; y=0; s=0.2; } }單擺(線條+拉線條)// week05_4_pendulum_mouseDragged_x_y void setup(){ size(400,600); } float x=200, y=300; void draw(){ background(255); line(200,100,x,y); ellipse(x,y,30,30); } void mouseDragged(){ x=mouseX; y=mouseY; }單擺(線條+拉線條+計算輔助線PVector-->綠、紅色線)
// week05_5_pendulum_cos_sin_draw_line void setup(){ size(400,600); } float x=200, y=300; void draw(){ background(255); stroke(0); //原來是黑色的線 line(200,100,x,y); ellipse(x,y,30,30); stroke(255,0,0); //紅色往下的線 line(x,y,x,y+100); PVector d = new PVector(x-200, y-100).normalize(); //長度1 PVector d2 = new PVector(0, 1); float g = PVector.dot(d,d2); d.mult(100*g); stroke(0,255,0); //綠色往左下的線 line(x, y, x+d.x, y+d.y); } void mouseDragged(){ //void mouseDragged() x=mouseX; y=mouseY; }PVector 物件導向-用法
// week05_6_PVector_new_PVector_x_y void setup(){ size(400,600); c= new PVector(200,100); //new 出新物件 p= new PVector(200,130); //new 出新物件 } PVector c, p; //PVector 物件導向 void draw(){ background(255); ellipse(c.x, c.y, 10, 10); //使用物件的 c.x ellipse(p.x, p.y, 10, 10); }
PVector 物件導向-用法(數值修改)// week05_6_PVector_new_PVector_x_y void setup(){ size(400,600); c= new PVector(200,100); //new 出新物件 p= new PVector(300,230); //new 出新物件 } PVector c, p; //PVector 物件導向 void draw(){ background(255); ellipse(c.x, c.y, 10, 10); //使用物件的 c.x ellipse(p.x, p.y, 10, 10); }單擺(線條+拉線條+計算輔助線PVector-->藍色線)
// week05_7_pendulum_PVector_normalize_dot_mult void setup(){ size(400,600); } float x=200, y=300; void draw(){ background(255); stroke(0); //原來是黑色的線 line(200,100,x,y); ellipse(x,y,30,30); stroke(255,0,0); //紅色往下的線 line(x,y,x,y+100); PVector d = new PVector(x-200, y-100).normalize(); //長度1 PVector d2 = new PVector(0, 1); float g = PVector.dot(d,d2); d.mult(100*g); stroke(0,255,0); //綠色往左下的線 line(x, y, x+d.x, y+d.y); PVector N = new PVector(d.y, -d.x).normalize(); N.mult(100*sin((g))); //g是cos(a),acos(g)就是角度a stroke(0,0,255); //藍色往右下的線 line(x, y, x+N.x, y+N.y); } void mouseDragged(){ //void mouseDragged() x=mouseX; y=mouseY; }單擺(未成功)// week05_8_pendulum_not_OK_PVector_sub_velocity void setup(){ size(400,600); } float x=200, y=300; void draw(){ background(255); stroke(0); //原來是黑色的線 line(200,100,x,y); ellipse(x,y,30,30); stroke(255,0,0); //紅色往下的線 line(x,y,x,y+100); PVector d = new PVector(x-200, y-100).normalize(); //長度1 PVector d2 = new PVector(0, 1); float g = PVector.dot(d,d2); d.mult(100*g); stroke(0,255,0); //綠色往左下的線 line(x, y, x+d.x, y+d.y); PVector N = PVector.sub(d2.mult(100), d); //PVector N = new PVector(d.y, -d.x).normalize(); //未成功 //N.mult(100*sin((g))); //g是cos(a),acos(g)就是角度a //未成功 stroke(0,0,255); //藍色往右下的線 line(x, y, x+N.x, y+N.y); v.x += N.x / 1000;//x += N.x / 100; v.y += N.y / 1000;//y += N.y / 100; x += v.x; y += v.y; } PVector v = new PVector(); //球的速度,一開始是0 void mouseDragged(){ //void mouseDragged() x=mouseX; y=mouseY; }
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