Pixels between rects instead of drawn lines in HTML5 Canvas
1
Basically I want background to be seen between rects. Right now I'm trying to leave a distance which is dependable on rect size between them, can I make that size to be exact number of pixels?
Because right now these empty spaces merge, sometimes are not seen at all, etc.
function getMousePos(canvas, evt) {
var rect = canvas.getBoundingClientRect();
return {
x: evt.clientX - rect.left,
y: evt.clientY - rect.top
};
}
var canvas = document.getElementById("posHourCanvas");
var context = canvas.getContext('2d');
var boxes = ;
function init() {
context.clearRect(0, 0, canvas.width, canvas.height);
boxes.length = 0;
const strokeWidth = 0.2;
canvas.width = $('#two')[0].clientWidth;
var cellSize = canvas.width / 27;
canvas.height = 7 / 27 * canvas.width;
var x = y = 0;
draw(x, y, canvas.width, canvas.height, cellSize, strokeWidth);
}
function Box(x, y, day, hour) {
this.x = x;
this.y = y;
this.day = day;
this.hour = hour;
}
function draw(x, y, w, h, cellSize, strokeWidth) {
let onePixel = cellSize * strokeWidth;
cellSize = cellSize * (1 - strokeWidth);
context.beginPath();
context.lineWidth = 0.01;
context.strokeStyle = 'rgba(255, 255, 255, 0)';
for (let i = 0; i < 7; i++) {
context.beginPath();
dayRect(context, cellSize, i, onePixel);
let startX = 3 * cellSize + onePixel;
for (let j = 0; j < 25; j++) {
context.rect(startX, i * cellSize + i * onePixel, cellSize, cellSize);
context.fillStyle = "white";
context.fill();
startX += cellSize + onePixel;
}
}
}
function dayRect(context, cellSize, day, onePixel) {
var offSet = day * onePixel;
context.rect(0, day * cellSize + offSet, 3 * cellSize, cellSize);
context.fillStyle = "white";
context.fill();
}
init();
window.addEventListener("resize", init, false);body {
margin: auto;
color: white;
background-color: black;
}
div#two {
margin-left: 5%;
width: 10%;
height: 30%;
}<script src="https://code.jquery.com/jquery-3.3.1.js" integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60=" crossorigin="anonymous"></script>
<div id="parent">
<div>text above</div>
<div id="two">
<canvas id="posHourCanvas" width="600" height="300"></canvas>
</div>
<div>text under</div>
</div>JSFIDDLE: http://jsfiddle.net/kgbh9352/
javascript html5-canvas
edited Jan 18 at 14:15
Islam Elshobokshy
2,3051428
asked Jan 18 at 14:11
Ne NenneNe Nenne
6119
add a comment |
1
Basically I want background to be seen between rects. Right now I'm trying to leave a distance which is dependable on rect size between them, can I make that size to be exact number of pixels?
Because right now these empty spaces merge, sometimes are not seen at all, etc.
function getMousePos(canvas, evt) {
var rect = canvas.getBoundingClientRect();
return {
x: evt.clientX - rect.left,
y: evt.clientY - rect.top
};
}
var canvas = document.getElementById("posHourCanvas");
var context = canvas.getContext('2d');
var boxes = ;
function init() {
context.clearRect(0, 0, canvas.width, canvas.height);
boxes.length = 0;
const strokeWidth = 0.2;
canvas.width = $('#two')[0].clientWidth;
var cellSize = canvas.width / 27;
canvas.height = 7 / 27 * canvas.width;
var x = y = 0;
draw(x, y, canvas.width, canvas.height, cellSize, strokeWidth);
}
function Box(x, y, day, hour) {
this.x = x;
this.y = y;
this.day = day;
this.hour = hour;
}
function draw(x, y, w, h, cellSize, strokeWidth) {
let onePixel = cellSize * strokeWidth;
cellSize = cellSize * (1 - strokeWidth);
context.beginPath();
context.lineWidth = 0.01;
context.strokeStyle = 'rgba(255, 255, 255, 0)';
for (let i = 0; i < 7; i++) {
context.beginPath();
dayRect(context, cellSize, i, onePixel);
let startX = 3 * cellSize + onePixel;
for (let j = 0; j < 25; j++) {
context.rect(startX, i * cellSize + i * onePixel, cellSize, cellSize);
context.fillStyle = "white";
context.fill();
startX += cellSize + onePixel;
}
}
}
function dayRect(context, cellSize, day, onePixel) {
var offSet = day * onePixel;
context.rect(0, day * cellSize + offSet, 3 * cellSize, cellSize);
context.fillStyle = "white";
context.fill();
}
init();
window.addEventListener("resize", init, false);body {
margin: auto;
color: white;
background-color: black;
}
div#two {
margin-left: 5%;
width: 10%;
height: 30%;
}<script src="https://code.jquery.com/jquery-3.3.1.js" integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60=" crossorigin="anonymous"></script>
<div id="parent">
<div>text above</div>
<div id="two">
<canvas id="posHourCanvas" width="600" height="300"></canvas>
</div>
<div>text under</div>
</div>JSFIDDLE: http://jsfiddle.net/kgbh9352/
javascript html5-canvas
edited Jan 18 at 14:15
Islam Elshobokshy
2,3051428
asked Jan 18 at 14:11
Ne NenneNe Nenne
6119
add a comment |
1
1
1
Basically I want background to be seen between rects. Right now I'm trying to leave a distance which is dependable on rect size between them, can I make that size to be exact number of pixels?
Because right now these empty spaces merge, sometimes are not seen at all, etc.
function getMousePos(canvas, evt) {
var rect = canvas.getBoundingClientRect();
return {
x: evt.clientX - rect.left,
y: evt.clientY - rect.top
};
}
var canvas = document.getElementById("posHourCanvas");
var context = canvas.getContext('2d');
var boxes = ;
function init() {
context.clearRect(0, 0, canvas.width, canvas.height);
boxes.length = 0;
const strokeWidth = 0.2;
canvas.width = $('#two')[0].clientWidth;
var cellSize = canvas.width / 27;
canvas.height = 7 / 27 * canvas.width;
var x = y = 0;
draw(x, y, canvas.width, canvas.height, cellSize, strokeWidth);
}
function Box(x, y, day, hour) {
this.x = x;
this.y = y;
this.day = day;
this.hour = hour;
}
function draw(x, y, w, h, cellSize, strokeWidth) {
let onePixel = cellSize * strokeWidth;
cellSize = cellSize * (1 - strokeWidth);
context.beginPath();
context.lineWidth = 0.01;
context.strokeStyle = 'rgba(255, 255, 255, 0)';
for (let i = 0; i < 7; i++) {
context.beginPath();
dayRect(context, cellSize, i, onePixel);
let startX = 3 * cellSize + onePixel;
for (let j = 0; j < 25; j++) {
context.rect(startX, i * cellSize + i * onePixel, cellSize, cellSize);
context.fillStyle = "white";
context.fill();
startX += cellSize + onePixel;
}
}
}
function dayRect(context, cellSize, day, onePixel) {
var offSet = day * onePixel;
context.rect(0, day * cellSize + offSet, 3 * cellSize, cellSize);
context.fillStyle = "white";
context.fill();
}
init();
window.addEventListener("resize", init, false);body {
margin: auto;
color: white;
background-color: black;
}
div#two {
margin-left: 5%;
width: 10%;
height: 30%;
}<script src="https://code.jquery.com/jquery-3.3.1.js" integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60=" crossorigin="anonymous"></script>
<div id="parent">
<div>text above</div>
<div id="two">
<canvas id="posHourCanvas" width="600" height="300"></canvas>
</div>
<div>text under</div>
</div>JSFIDDLE: http://jsfiddle.net/kgbh9352/
javascript html5-canvas
edited Jan 18 at 14:15
Islam Elshobokshy
2,3051428
asked Jan 18 at 14:11
Ne NenneNe Nenne
6119
Basically I want background to be seen between rects. Right now I'm trying to leave a distance which is dependable on rect size between them, can I make that size to be exact number of pixels?
Because right now these empty spaces merge, sometimes are not seen at all, etc.
function getMousePos(canvas, evt) {
var rect = canvas.getBoundingClientRect();
return {
x: evt.clientX - rect.left,
y: evt.clientY - rect.top
};
}
var canvas = document.getElementById("posHourCanvas");
var context = canvas.getContext('2d');
var boxes = ;
function init() {
context.clearRect(0, 0, canvas.width, canvas.height);
boxes.length = 0;
const strokeWidth = 0.2;
canvas.width = $('#two')[0].clientWidth;
var cellSize = canvas.width / 27;
canvas.height = 7 / 27 * canvas.width;
var x = y = 0;
draw(x, y, canvas.width, canvas.height, cellSize, strokeWidth);
}
function Box(x, y, day, hour) {
this.x = x;
this.y = y;
this.day = day;
this.hour = hour;
}
function draw(x, y, w, h, cellSize, strokeWidth) {
let onePixel = cellSize * strokeWidth;
cellSize = cellSize * (1 - strokeWidth);
context.beginPath();
context.lineWidth = 0.01;
context.strokeStyle = 'rgba(255, 255, 255, 0)';
for (let i = 0; i < 7; i++) {
context.beginPath();
dayRect(context, cellSize, i, onePixel);
let startX = 3 * cellSize + onePixel;
for (let j = 0; j < 25; j++) {
context.rect(startX, i * cellSize + i * onePixel, cellSize, cellSize);
context.fillStyle = "white";
context.fill();
startX += cellSize + onePixel;
}
}
}
function dayRect(context, cellSize, day, onePixel) {
var offSet = day * onePixel;
context.rect(0, day * cellSize + offSet, 3 * cellSize, cellSize);
context.fillStyle = "white";
context.fill();
}
init();
window.addEventListener("resize", init, false);body {
margin: auto;
color: white;
background-color: black;
}
div#two {
margin-left: 5%;
width: 10%;
height: 30%;
}<script src="https://code.jquery.com/jquery-3.3.1.js" integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60=" crossorigin="anonymous"></script>
<div id="parent">
<div>text above</div>
<div id="two">
<canvas id="posHourCanvas" width="600" height="300"></canvas>
</div>
<div>text under</div>
</div>JSFIDDLE: http://jsfiddle.net/kgbh9352/
function getMousePos(canvas, evt) {
var rect = canvas.getBoundingClientRect();
return {
x: evt.clientX - rect.left,
y: evt.clientY - rect.top
};
}
var canvas = document.getElementById("posHourCanvas");
var context = canvas.getContext('2d');
var boxes = ;
function init() {
context.clearRect(0, 0, canvas.width, canvas.height);
boxes.length = 0;
const strokeWidth = 0.2;
canvas.width = $('#two')[0].clientWidth;
var cellSize = canvas.width / 27;
canvas.height = 7 / 27 * canvas.width;
var x = y = 0;
draw(x, y, canvas.width, canvas.height, cellSize, strokeWidth);
}
function Box(x, y, day, hour) {
this.x = x;
this.y = y;
this.day = day;
this.hour = hour;
}
function draw(x, y, w, h, cellSize, strokeWidth) {
let onePixel = cellSize * strokeWidth;
cellSize = cellSize * (1 - strokeWidth);
context.beginPath();
context.lineWidth = 0.01;
context.strokeStyle = 'rgba(255, 255, 255, 0)';
for (let i = 0; i < 7; i++) {
context.beginPath();
dayRect(context, cellSize, i, onePixel);
let startX = 3 * cellSize + onePixel;
for (let j = 0; j < 25; j++) {
context.rect(startX, i * cellSize + i * onePixel, cellSize, cellSize);
context.fillStyle = "white";
context.fill();
startX += cellSize + onePixel;
}
}
}
function dayRect(context, cellSize, day, onePixel) {
var offSet = day * onePixel;
context.rect(0, day * cellSize + offSet, 3 * cellSize, cellSize);
context.fillStyle = "white";
context.fill();
}
init();
window.addEventListener("resize", init, false);body {
margin: auto;
color: white;
background-color: black;
}
div#two {
margin-left: 5%;
width: 10%;
height: 30%;
}<script src="https://code.jquery.com/jquery-3.3.1.js" integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60=" crossorigin="anonymous"></script>
<div id="parent">
<div>text above</div>
<div id="two">
<canvas id="posHourCanvas" width="600" height="300"></canvas>
</div>
<div>text under</div>
</div>function getMousePos(canvas, evt) {
var rect = canvas.getBoundingClientRect();
return {
x: evt.clientX - rect.left,
y: evt.clientY - rect.top
};
}
var canvas = document.getElementById("posHourCanvas");
var context = canvas.getContext('2d');
var boxes = ;
function init() {
context.clearRect(0, 0, canvas.width, canvas.height);
boxes.length = 0;
const strokeWidth = 0.2;
canvas.width = $('#two')[0].clientWidth;
var cellSize = canvas.width / 27;
canvas.height = 7 / 27 * canvas.width;
var x = y = 0;
draw(x, y, canvas.width, canvas.height, cellSize, strokeWidth);
}
function Box(x, y, day, hour) {
this.x = x;
this.y = y;
this.day = day;
this.hour = hour;
}
function draw(x, y, w, h, cellSize, strokeWidth) {
let onePixel = cellSize * strokeWidth;
cellSize = cellSize * (1 - strokeWidth);
context.beginPath();
context.lineWidth = 0.01;
context.strokeStyle = 'rgba(255, 255, 255, 0)';
for (let i = 0; i < 7; i++) {
context.beginPath();
dayRect(context, cellSize, i, onePixel);
let startX = 3 * cellSize + onePixel;
for (let j = 0; j < 25; j++) {
context.rect(startX, i * cellSize + i * onePixel, cellSize, cellSize);
context.fillStyle = "white";
context.fill();
startX += cellSize + onePixel;
}
}
}
function dayRect(context, cellSize, day, onePixel) {
var offSet = day * onePixel;
context.rect(0, day * cellSize + offSet, 3 * cellSize, cellSize);
context.fillStyle = "white";
context.fill();
}
init();
window.addEventListener("resize", init, false);body {
margin: auto;
color: white;
background-color: black;
}
div#two {
margin-left: 5%;
width: 10%;
height: 30%;
}<script src="https://code.jquery.com/jquery-3.3.1.js" integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60=" crossorigin="anonymous"></script>
<div id="parent">
<div>text above</div>
<div id="two">
<canvas id="posHourCanvas" width="600" height="300"></canvas>
</div>
<div>text under</div>
</div>javascript html5-canvas
javascript html5-canvas
edited Jan 18 at 14:15
Islam Elshobokshy
2,3051428
asked Jan 18 at 14:11
Ne NenneNe Nenne
6119
edited Jan 18 at 14:15
Islam Elshobokshy
2,3051428
asked Jan 18 at 14:11
Ne NenneNe Nenne
6119
edited Jan 18 at 14:15
Islam Elshobokshy
2,3051428
edited Jan 18 at 14:15
Islam Elshobokshy
2,3051428
edited Jan 18 at 14:15
Islam Elshobokshy
2,3051428
2,3051428
asked Jan 18 at 14:11
Ne NenneNe Nenne
6119
asked Jan 18 at 14:11
Ne NenneNe Nenne
6119
asked Jan 18 at 14:11
Ne NenneNe Nenne
6119
6119
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54255728%2fpixels-between-rects-instead-of-drawn-lines-in-html5-canvas%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
draft saved
draft discarded
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54255728%2fpixels-between-rects-instead-of-drawn-lines-in-html5-canvas%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
