回答編集履歴
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見直しキャンペーン中
answer
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@@ -1,59 +1,60 @@
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「そういうことじゃない！」ってのは承知しています^^;
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ライブラリを使うとどのくらい簡単になるか試しました。
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```Processing
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import fisica.*;
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FWorld world;
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void setup() {
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size(500, 500);
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colorMode(HSB);
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Fisica.init(this);
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world = new FWorld();
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world.setEdges();
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world.setGravity(0, 0);
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world.setGrabbable(false);
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for (int i = 0; i < 3; i++) {
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FBody ball = createBall();
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ball.setPosition(random(50, width - 50), random(50, height - 50));
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world.add(ball);
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}
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}
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void draw() {
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background(255);
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world.step();
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world.draw();
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}
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void contactStarted(FContact contact) {
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FBody b1 = contact.getBody1();
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FBody b2 = contact.getBody2();
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if (b1.isStatic() || b2.isStatic()) return;
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if (b1.getJoints().size() != 0 && b2.getJoints().size() != 0) return;
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FRevoluteJoint joint = new FRevoluteJoint(b1, b2);
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joint.setDrawable(false);
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world.add(joint);
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}
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FBody createBall() {
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FCircle ball = new FCircle(random(40, 60));
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ball.setDamping(0);
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ball.setRestitution(1);
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ball.setVelocity(random(-300, 300), random(-300, 300));
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ball.setFillColor(color(random(256), 128, 255));
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ball.setNoStroke();
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return ball;
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}
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// ちょい寂しいのでおまけ
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void mousePressed() {
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FBody ball = createBall();
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ball.setPosition(mouseX, mouseY);
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world.add(ball);
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}
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```
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1
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+
「そういうことじゃない！」ってのは承知しています^^;
|
|
2
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+
ライブラリを使うとどのくらい簡単になるか試しました。
|
|
3
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+
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4
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+
```Processing
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5
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import fisica.*;
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6
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+
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7
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FWorld world;
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8
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9
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void setup() {
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10
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size(500, 500);
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11
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colorMode(HSB);
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12
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Fisica.init(this);
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world = new FWorld();
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world.setEdges();
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world.setGravity(0, 0);
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world.setGrabbable(false);
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for (int i = 0; i < 3; i++) {
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FBody ball = createBall();
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ball.setPosition(random(50, width - 50), random(50, height - 50));
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world.add(ball);
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}
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}
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void draw() {
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background(255);
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world.step();
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world.draw();
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}
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void contactStarted(FContact contact) {
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FBody b1 = contact.getBody1();
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FBody b2 = contact.getBody2();
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if (b1.isStatic() || b2.isStatic()) return;
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if (b1.getJoints().size() != 0 && b2.getJoints().size() != 0) return;
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FRevoluteJoint joint = new FRevoluteJoint(b1, b2);
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joint.setDrawable(false);
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world.add(joint);
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}
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FBody createBall() {
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FCircle ball = new FCircle(random(40, 60));
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ball.setDamping(0);
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ball.setRestitution(1);
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ball.setVelocity(random(-300, 300), random(-300, 300));
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ball.setFillColor(color(random(256), 128, 255));
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ball.setNoStroke();
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return ball;
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}
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53
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// ちょい寂しいのでおまけ
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void mousePressed() {
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FBody ball = createBall();
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ball.setPosition(mouseX, mouseY);
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world.add(ball);
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}
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```
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[fisica](http://www.ricardmarxer.com/fisica/)
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