标签：前端学习 als [] 0.00 draw sha ati bre body
魔性的舞蹈
this.p0 = p0;
this.p1 = p1;
this.distance = dist;
this.size = size;
this.light = light || 1.0;
this.force = force || 0.5;
this.image = stroke("hsl(" + parent.color + " ,30%, " + parent.light * this.light + "%)", true);
this.shadow = stroke("rgba(0,0,0,0.5)");
};
var Point = function Point(id, x, y, fn, w) {
_classCallCheck(this, Point);
this.id = id;
this.x = x;
this.y = y;
this.w = w || 0.5;
this.fn = fn || null;
this.px = x;
this.py = y;
this.vx = 0;
this.vy = 0;
};
var Canvas = function () {
function Canvas() {
var _this = this;
_classCallCheck(this, Canvas);
this.elem = document.createElement(‘canvas‘);
this.ctx = this.elem.getContext(‘2d‘);
document.body.appendChild(this.elem);
this.resize();
window.addEventListener(‘resize‘, function () {
return _this.resize();
}, false);
}
Canvas.prototype.resize = function resize() {
this.width = this.elem.width = this.elem.offsetWidth;
this.height = this.elem.height = this.elem.offsetHeight;
ground = this.height > 500 ? 0.85 : 1.0;
};
return Canvas;
}();
var Pointer = function () {
function Pointer(canvas) {
var _this2 = this;
_classCallCheck(this, Pointer);
this.x = 0;
this.y = 0;
this.canvas = canvas;
window.addEventListener(‘mousemove‘, function (e) {
return _this2.move(e);
}, false);
canvas.elem.addEventListener(‘touchmove‘, function (e) {
return _this2.move(e);
}, false);
window.addEventListener(‘mousedown‘, function (e) {
return _this2.down(e);
}, false);
window.addEventListener(‘touchstart‘, function (e) {
return _this2.down(e);
}, false);
window.addEventListener(‘mouseup‘, function (e) {
return _this2.up(e);
}, false);
window.addEventListener(‘touchend‘, function (e) {
return _this2.up(e);
}, false);
}
Pointer.prototype.down = function down(e) {
this.move(e);
for (var _iterator7 = dancers, _isArray7 = Array.isArray(_iterator7), _i7 = 0, _iterator7 = _isArray7 ? _iterator7 : _iterator7[Symbol.iterator]();;) {
var _ref7;
if (_isArray7) {
if (_i7 >= _iterator7.length) break;
_ref7 = _iterator7[_i7++];
} else {
_i7 = _iterator7.next();
if (_i7.done) break;
_ref7 = _i7.value;
}
var dancer = _ref7;
for (var _iterator8 = dancer.points, _isArray8 = Array.isArray(_iterator8), _i8 = 0, _iterator8 = _isArray8 ? _iterator8 : _iterator8[Symbol.iterator]();;) {
var _ref8;
if (_isArray8) {
if (_i8 >= _iterator8.length) break;
_ref8 = _iterator8[_i8++];
} else {
_i8 = _iterator8.next();
if (_i8.done) break;
_ref8 = _i8.value;
}
var point = _ref8;
var dx = pointer.x - point.x;
var dy = pointer.y - point.y;
var d = Math.sqrt(dx * dx + dy * dy);
if (d < 60) {
dancerDrag = dancer;
pointDrag = point;
dancer.frame = 0;
}
}
}
};
Pointer.prototype.up = function up(e) {
dancerDrag = null;
};
Pointer.prototype.move = function move(e) {
var touchMode = e.targetTouches,
pointer = undefined;
if (touchMode) {
e.preventDefault();
pointer = touchMode[0];
} else pointer = e;
this.x = pointer.clientX;
this.y = pointer.clientY;
};
return Pointer;
}();
// ---- init ----
var ground = 1.0;
var canvas = new Canvas();
var ctx = canvas.ctx;
var pointer = new Pointer(canvas);
var dancerDrag = null;
var pointDrag = null;
// ---- main loop ----
function run() {
requestAnimationFrame(run);
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = "#222";
ctx.fillRect(0, 0, canvas.width, canvas.height * 0.15);
ctx.fillRect(0, canvas.height * 0.85, canvas.width, canvas.height * 0.15);
for (var _iterator9 = dancers, _isArray9 = Array.isArray(_iterator9), _i9 = 0, _iterator9 = _isArray9 ? _iterator9 : _iterator9[Symbol.iterator]();;) {
var _ref9;
if (_isArray9) {
if (_i9 >= _iterator9.length) break;
_ref9 = _iterator9[_i9++];
} else {
_i9 = _iterator9.next();
if (_i9.done) break;
_ref9 = _i9.value;
}
var dancer = _ref9;
dancer.update();
dancer.draw();
}
}
// ---- robot structure ----
var struct = {
points: [[0, -4, function (s, d) {
this.y -= 0.01 * s;
}], [0, -16, function (s, d) {
this.y -= 0.02 * s * d;
}], [0, 12, function (s, d) {
this.y += 0.02 * s * d;
}], [-12, 0], [12, 0], [-3, 34, function (s, d) {
if (d > 0) {
this.x += 0.01 * s;
this.y -= 0.015 * s;
} else {
this.y += 0.02 * s;
}
}], [3, 34, function (s, d) {
if (d > 0) {
this.y += 0.02 * s;
} else {
this.x -= 0.01 * s;
this.y -= 0.015 * s;
}
}], [-28, 0, function (s, d) {
this.x += this.vx * 0.035;
this.y -= 0.001 * s;
}], [28, 0, function (s, d) {
this.x += this.vx * 0.035;
this.y -= 0.001 * s;
}], [-3, 64, function (s, d) {
this.y += 0.02 * s;
if (d > 0) {
this.y -= 0.01 * s;
} else {
this.y += 0.05 * s;
}
}], [3, 64, function (s, d) {
this.y += 0.02 * s;
if (d > 0) {
this.y += 0.05 * s;
} else {
this.y -= 0.01 * s;
}
}], [0, -4.1]],
links: [[3, 7, 12, 0.5], [1, 3, 24, 0.5], [1, 0, 18, 0.5], [0, 11, 60, 0.8], [5, 9, 16, 0.5], [2, 5, 32, 0.5], [1, 2, 50, 1], [6, 10, 16, 1.5], [2, 6, 32, 1.5], [4, 8, 12, 1.5], [1, 4, 24, 1.5]]
};
// ---- instanciate robots ----
var dancers = [];
for (var i = 0; i < 6; i++) {
dancers.push(new Robot(i * 360 / 7, 80, 4, (i + 2) * canvas.width / 9, canvas.height * ground - 295, struct));
}
run();
</script>
</body>
</html>
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标签：前端学习 als [] 0.00 draw sha ati bre body
原文地址：http://www.cnblogs.com/luludehuhuan/p/7787761.html
