A function to draw flaps for a cut out and fold model. Code for parallel coordinates from here.
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December 24, 2017 00:12
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Cut Out Tabs
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| license: mit |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| var line1 = [{x: 200, y: 200},{x: 300, y: 300}]; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", 960) | |
| .attr("height", 500); | |
| var line = svg.append("line") | |
| .attr("x1", line1[0].x) | |
| .attr("y1", line1[0].y) | |
| .attr("x2", line1[1].x) | |
| .attr("y2", line1[1].y) | |
| .style("stroke", "black"); | |
| generateCutOutFlap(line1, 30, 5, 1); | |
| function generateCutOutFlap(line1, outDistance, inDistance, direction) { | |
| var t = calcTranslationExact(outDistance, line1, direction); | |
| var x1 = line1[0].x - t.dx, | |
| y1 = line1[0].y - t.dy, | |
| x2 = line1[1].x - t.dx, | |
| y2 = line1[1].y - t.dy; | |
| svg.append("line") | |
| .attr("x1", x1) | |
| .attr("y1", y1) | |
| .attr("x2", x2) | |
| .attr("y2", y2) | |
| .style("stroke", "red"); | |
| } | |
| function calcTranslationExact(distance, line1, direction) { | |
| var x1_x0 = line1[1].x - line1[0].x, | |
| y1_y0 = line1[1].y - line1[0].y, | |
| x2_x0, y2_y0; | |
| if (y1_y0 === 0) { | |
| x2_x0 = 0; | |
| y2_y0 = targetDistance; | |
| } else { | |
| let angle = Math.atan((x1_x0) / (y1_y0)); | |
| x2_x0 = (direction*-1)*distance * Math.cos(angle); | |
| y2_y0 = direction*distance * Math.sin(angle); | |
| } | |
| return { | |
| dx: x2_x0, | |
| dy: y2_y0 | |
| }; | |
| } | |
| </script> | |
| </body> |
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