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colors and such

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This commit is contained in:
Jeffrey Sun 2016-12-15 14:42:11 -08:00
parent bdb6c46df8
commit 1a4c1bd288
2 changed files with 40 additions and 13 deletions
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18
js/fox.js
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@ -13,7 +13,7 @@ var Fox = function (IMG_WIDTH, IMG_HEIGHT) {
var ears = (function () {
var offsetX = chance.floating({min: 0.1 * headWidth, max: 0.4 * headWidth});
var angle = chance.floating({min: 0, max: Math.PI / 6});
// TODO: size, angle?
// TODO: size
return {
left: {
x: origin.x + (headWidth/2) - offsetX,
@ -33,8 +33,20 @@ var Fox = function (IMG_WIDTH, IMG_HEIGHT) {
}());
var eyes = (function () {
// TODO: y, offsetX, color
return null;
// TODO: color
var offsetY = chance.floating({min: -0.05 * headHeight, max: 0.05 * headHeight});
var offsetX = chance.floating({min: 0.2 * headWidth, max: 0.25 * headWidth});
return {
left: {
x: origin.x + (headWidth/2) - offsetX,
y: origin.y + (headHeight/2) + offsetY
},
right: {
x: origin.x + (headWidth/2) + offsetX,
y: origin.y + (headHeight/2) + offsetY
}
}
}());
return {

35
server.js
View file

@ -39,10 +39,12 @@ var renderFox = function (canvas, opts) {
var height = opts.canvas.height;
var ctx = canvas.getContext('2d');
// draw head
renderHead(ctx, opts.head);
// draw ears
renderEars(ctx, opts.ears);
// draw head
renderHead(ctx, opts.head);
// draw eyes
renderEyes(ctx, opts.eyes);
// draw cheeks
// draw eyes
// draw nose
@ -53,7 +55,7 @@ function renderHead(ctx, opts) {
ctx.save();
ctx.translate(ctx.canvas.width/2, ctx.canvas.height/2);
ctx.rotate(Math.PI / 4);
drawEllipseByCenter(ctx, 0, 0, opts.width, opts.height);
drawEllipseByCenter(ctx, 0, 0, opts.width, opts.height, "orange");
ctx.restore();
}
@ -65,23 +67,28 @@ function renderEars(ctx, opts) {
ctx.save();
ctx.translate(offset.x, offset.y);
ctx.rotate(-opts.left.angle);
drawEllipseByCenter(ctx, opts.left.x - offset.x, opts.left.y - offset.y, opts.left.width, opts.left.height);
drawEllipseByCenter(ctx, opts.left.x - offset.x, opts.left.y - offset.y, opts.left.width, opts.left.height, "orange");
ctx.restore();
ctx.save();
ctx.translate(offset.x, offset.y);
ctx.rotate(-opts.right.angle);
drawEllipseByCenter(ctx, opts.right.x - offset.x, opts.right.y - offset.y, opts.right.width, opts.right.height);
drawEllipseByCenter(ctx, opts.right.x - offset.x, opts.right.y - offset.y, opts.right.width, opts.right.height, "orange");
ctx.restore();
}
function drawEllipseByCenter(ctx, cx, cy, w, h) {
console.log("ellipse coords", cx, cy, w, h);
drawEllipse(ctx, cx - w/2.0, cy - h/2.0, w, h);
function renderEyes(ctx, opts) {
drawEllipseByCenter(ctx, opts.left.x, opts.left.y, 5, 10, "black", 1);
drawEllipseByCenter(ctx, opts.right.x, opts.right.y, 5, 10, "black", 1);
}
function drawEllipse(ctx, x, y, w, h) {
var kappa = .3,
function drawEllipseByCenter(ctx, cx, cy, w, h, color, fillColor, kappa) {
console.log("ellipse coords", cx, cy, w, h);
drawEllipse(ctx, cx - w/2.0, cy - h/2.0, w, h, color, fillColor, kappa);
}
function drawEllipse(ctx, x, y, w, h, color, fillColor, kappa) {
var kappa = kappa || 0.3,
ox = (w / 2) * kappa, // control point offset horizontal
oy = (h / 2) * kappa, // control point offset vertical
xe = x + w, // x-end
@ -89,12 +96,20 @@ function drawEllipse(ctx, x, y, w, h) {
xm = x + w / 2, // x-middle
ym = y + h / 2; // y-middle
if (color) {
ctx.strokeStyle = color;
}
ctx.beginPath();
ctx.moveTo(x, ym);
ctx.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y);
ctx.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym);
ctx.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye);
ctx.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym);
var fillColor = fillColor || color;
if (fillColor) {
ctx.fillStyle = fillColor;
ctx.fill();
}
//ctx.closePath(); // not used correctly, see comments (use to close off open path)
ctx.stroke();
}