49 lines
1.5 KiB
Plaintext
49 lines
1.5 KiB
Plaintext
struct transbeamPrefs {
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real triangleRadius;
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real borderInset;
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real circleRadius;
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real bigBeamRadius;
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real smallBeamRadius;
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real beamCount;
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real beamAngle;
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real starterBeamAngle;
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}
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void drawTransbeam(transbeamPrefs prefs) {
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unravel prefs;
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pen transBlue = rgb("55cdfc");
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pen transPink = rgb("f7a8b8");
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pen bigBeamColor = transPink;
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pen smallBeamColor = transBlue;
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path borderTriangle = dir(90)--dir(210)--dir(330)--cycle;
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path outerBorder = scale(triangleRadius)*borderTriangle;
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fill(outerBorder, white);
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path beam(real angle, real innerRadius, real outerRadius) {
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return arc((0,0), outerRadius, angle/2, -angle/2)--arc((0,0), innerRadius, -angle/2, angle/2)--cycle;
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}
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path bigBeam = beam(beamAngle, circleRadius, bigBeamRadius);
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path smallBeam = beam(beamAngle, circleRadius, smallBeamRadius);
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for (int i = 0; i < beamCount; ++i) {
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if (i > 0) {
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fill(rotate(360*i/beamCount)*bigBeam, bigBeamColor);
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}
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fill(rotate(360*(i+0.5)/beamCount)*smallBeam, smallBeamColor);
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}
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pair starterBeamTrianglePoint(real angle) {
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pair circlePoint = circleRadius*dir(angle);
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return intersectionpoint(circlePoint--(circlePoint+(triangleRadius,0)), outerBorder);
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}
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fill(starterBeamTrianglePoint(-starterBeamAngle/2)--arc((0,0), circleRadius, -starterBeamAngle/2, starterBeamAngle/2)--starterBeamTrianglePoint(starterBeamAngle/2)--cycle, bigBeamColor);
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draw(outerBorder, transPink+(2*borderInset));
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draw(scale(triangleRadius-borderInset)*borderTriangle, transBlue+borderInset);
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}
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