<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>canvas</title> <script type="text/javascript" src="../js/jQuery.js"></script> <style type="text/css">…
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>canvas</title> <script type="text/javascript" src="../js/jQuery.js"></script> <style type="text/css">…
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>canvas</title> <script type="text/javascript" src="../js/jQuery.js"></script> <style type="text/css">…
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>canvas</title> <script type="text/javascript" src="../js/jQuery.js"></script> <style type="text/css">…
- Transformations scale(0.5,0.5) 缩放 rotate(0.175) 旋转 translate(100,50) 位移 - 代码结构 context.scale(x, y) context.rotate(angle ) context.translate(x, y) context.rotate(0.175); context.scale(0.75,0.75 ); context.fillRect(0,0,200,150); context.translate(100…
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-…
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>canvas</title> <script type="text/javascript" src="../js/jQuery.js"></script> <style type="text/css">…
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>canvas</title> <script type="text/javascript" src="../js/jQuery.js"></script> <style type="text/css">…
canvas 必须认识到的大坑 <!-- 重点: 在js/canvas标签中定义的宽和高是画布实际的宽和高. 在样式表中定义的宽和高是画布缩放后的宽和高. 即:把js/canvas实际大小缩放到css中的宽高即可.浏览器中显示的效果是css中设置的宽高. 一,没有设置canvas宽高,默认是300px*150px.设置canvas在浏览器中的实际宽高,必须在canvas标签或者使用js进行设置.而使用css进行设置的宽高是进行缩放后大小,与实际位置不同. 1,<canvas id="…
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>canvas</title> <script type="text/javascript" src="../js/jQuery.js"></script> <style type="text/css">…