function pieInner(d, rx, ry, h, ir ){ // Normalize angles before we start any calculations var startAngle = (d.startAngle < Math.PI ? Math.PI : d.startAngle); var endAngle = (d.endAngle < Math.PI ? Math.PI : d.endAngle); // Take care of corner cases if (d.startAngle > Math.PI * 2 && d.endAngle < Math.PI * 3) { return ""; } if (d.startAngle >= Math.PI*2 && d.endAngle >= Math.PI * 2 && d.endAngle <= Math.PI * 3) { return ""; } // Reassign startAngle and endAngle based on their positions if (d.startAngle <= Math.PI && d.endAngle > Math.PI * 2) { startAngle = Math.PI; endAngle = 2 * Math.PI; } if (d.startAngle > Math.PI && d.endAngle >= Math.PI * 3) { endAngle = 2 * Math.PI; } if (d.startAngle > Math.PI && d.endAngle > Math.PI * 2 && d.endAngle < Math.PI * 3) { endAngle = 2 * Math.PI; } if (d.startAngle > Math.PI && d.startAngle < Math.PI * 2 && d.endAngle > Math.PI * 3) { endAngle = 2 * Math.PI; startAngle = Math.PI } if (d.startAngle > Math.PI && d.startAngle < Math.PI * 2 && d.endAngle > Math.PI * 3) { endAngle = 2 * Math.PI; startAngle = Math.PI } if (d.startAngle > Math.PI && d.startAngle < Math.PI * 2 && d.endAngle > Math.PI * 3) { startAngle = Math.PI; endAngle = Math.PI + d.endAngle % Math.PI; } if (d.startAngle > Math.PI * 2 && d.startAngle < Math.PI * 3 && d.endAngle > Math.PI * 3) { startAngle = Math.PI; endAngle = Math.PI + d.endAngle % Math.PI; } if (d.startAngle > Math.PI * 3 && d.endAngle > Math.PI * 3) { startAngle = d.startAngle % (Math.PI * 2) endAngle = d.endAngle % (Math.PI * 2) } // Calculating shape key points var sx = ir * rx * Math.cos(startAngle), sy = ir * ry * Math.sin(startAngle), ex = ir * rx * Math.cos(endAngle), ey = ir * ry * Math.sin(endAngle); // Creating custom path commands based on calculation var ret = []; ret.push("M", sx, sy, "A", ir * rx, ir * ry, "0 0 1", ex, ey, "L", ex, h + ey, "A", ir * rx, ir * ry, "0 0 0", sx, h + sy, "z"); // If shape is big enough, that it needs two separate outer shape , then draw second shape as well if (d.startAngle > Math.PI && d.startAngle < Math.PI * 2 && d.endAngle > Math.PI * 3) { startAngle = d.startAngle % (Math.PI * 2); endAngle = Math.PI * 2; var sx = ir * rx * Math.cos(startAngle), sy = ir * ry * Math.sin(startAngle), ex = ir * rx * Math.cos(endAngle), ey = ir * ry * Math.sin(endAngle); ret.push("M", sx, sy, "A", ir * rx, ir * ry, "0 0 1", ex, ey, "L", ex, h + ey, "A", ir * rx, ir * ry, "0 0 0", sx, h + sy, "z"); } // Assemble shape commands return ret.join(" "); }