I have a path which is a semi-circle. How do I make the corners rounded? I do not want to use stroke-linecap: round
as I need it to be rounded only on these corners:
<svg>
<g>
<!--background -->
<path fill="none" stroke-dasharray="" stroke-width="16" stroke="#607985" d="M30 100 A 40 40 0 0 1 170 100"></path>
<!-- strokes -->
<path id="meter-back" fill="none" stroke-width="15" stroke="white" d="M30 100 A 40 40 0 0 1 170 100"></path>
<!--progress -->
<path id="meter-fill" fill="none" stroke-dashoffset="219.942" stroke-dasharray="109.971, 109.971" stroke="rgba(96,121,133,0.7)" stroke-width="15" d="M30 100 A 40 40 0 0 1 170 100" stroke="#607985"></path>
</g>
</svg>
<iframe name="sif1" sandbox="allow-forms allow-modals allow-scripts" frameborder="0"></iframe>
CodePudding user response:
Use getPath
routine to compute the desired path
(The 0,0
point in the center of the semi-circle):
const getPath = (outerRadius, innerRadius, cornerRadius) => {
return `M ${-outerRadius},0
A ${outerRadius},${outerRadius} 1 1 1 ${outerRadius},0
Q ${outerRadius},${cornerRadius}
${outerRadius-cornerRadius},${cornerRadius}
H ${innerRadius cornerRadius}
Q ${innerRadius},${cornerRadius}
${innerRadius},0
A ${innerRadius},${innerRadius} 0 0 0
${-innerRadius},0
Q ${-innerRadius},${cornerRadius}
${-innerRadius-cornerRadius},${cornerRadius}
H ${-outerRadius cornerRadius}
Q ${-outerRadius},${cornerRadius}
${-outerRadius},0
Z`;
};
d3.select('path').attr('d', getPath(120, 90, 12));
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>
<svg width='300' height='200'>
<g transform='translate(150,150)'>
<path stroke='red' fill='none'/>
<circle fill='red' r='5' cx='0' cy='0'/>
</g>
</svg>
<iframe name="sif2" sandbox="allow-forms allow-modals allow-scripts" frameborder="0"></iframe>
CodePudding user response:
Here is a fixed solution. dividerPos
can be in range from 0 to 1:
const getPath = (outerRadius, innerRadius, cornerRadius, dividerPos) => {
const angle = Math.PI * (1 - dividerPos);
const outerPointX = outerRadius * Math.cos(angle);
const outerPointY = outerRadius * -Math.sin(angle);
const innerPointX = innerRadius * Math.cos(angle);
const innerPointY = innerRadius * -Math.sin(angle);
const left = `M ${-outerRadius},0
A ${outerRadius},${outerRadius} 0 0 1
${outerPointX},${outerPointY}
L ${innerPointX},${innerPointY}
A ${innerRadius},${innerRadius} 0 0 0 ${-innerRadius},0
Q ${-innerRadius},${cornerRadius}
${-innerRadius-cornerRadius},${cornerRadius}
H ${-outerRadius cornerRadius}
Q ${-outerRadius},${cornerRadius}
${-outerRadius},0
Z`;
const right = `M ${outerPointX},${outerPointY}
A ${outerRadius},${outerRadius} 0 0 1
${outerRadius},0
Q ${outerRadius},${cornerRadius}
${outerRadius-cornerRadius},${cornerRadius}
H ${innerRadius cornerRadius}
Q ${innerRadius},${cornerRadius}
${innerRadius},0
A ${innerRadius},${innerRadius} 0 0 0
${innerPointX},${innerPointY}
Z`;
return {left, right};
};
const {left, right} = getPath(120, 90, 15, 0.5);
d3.select('.left').attr('d', left);
d3.select('.right').attr('d', right);
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>
<svg width='300' height='200'>
<g transform='translate(150,150)'>
<path stroke='grey' fill='grey' class='left'/>
<path stroke='grey' fill='none' class='right'/>
</g>
</svg>
<iframe name="sif3" sandbox="allow-forms allow-modals allow-scripts" frameborder="0"></iframe>