100 lines
3.1 KiB
Kotlin
100 lines
3.1 KiB
Kotlin
package org.openrndr.extra.shapes
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import org.openrndr.math.Vector2
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import org.openrndr.math.asRadians
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import org.openrndr.shape.ShapeContour
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import org.openrndr.shape.contour
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import kotlin.math.PI
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import kotlin.math.cos
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import kotlin.math.sin
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fun regularPolygon(sides: Int, center: Vector2 = Vector2.ZERO, radius: Double = 100.0, phase: Double = 0.0): ShapeContour {
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val c = contour {
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val phi = phase.asRadians
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for (i in 0 until sides) {
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val x = center.x + radius * cos(i.toDouble() / sides * PI * 2 + phi)
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val y = center.y + radius * sin(i.toDouble() / sides * PI * 2 + phi)
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moveOrLineTo(x, y)
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}
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close()
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}
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return c
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}
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fun regularPolygonRounded(sides: Int, roundFactor: Double = 0.5, center: Vector2 = Vector2.ZERO, radius: Double = 100.0, phase: Double = 0.0): ShapeContour {
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val c = contour {
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val phi = phase.asRadians
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for (i in 0 until sides) {
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val x0 = center.x + radius * cos(i.toDouble() / sides * PI * 2 + phi)
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val y0 = center.y + radius * sin(i.toDouble() / sides * PI * 2 + phi)
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val x1 = center.x + radius * cos((i + 1.0) / sides * PI * 2 + phi)
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val y1 = center.y + radius * sin((i + 1.0) / sides * PI * 2 + phi)
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val x2 = center.x + radius * cos((i + 2.0) / sides * PI * 2 + phi)
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val y2 = center.y + radius * sin((i + 2.0) / sides * PI * 2 + phi)
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val f = roundFactor / 2.0
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val dx10 = x1 - x0
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val dy10 = y1 - y0
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val dx21 = x2 - x1
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val dy21 = y2 - y1
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val x3 = x0 + dx10 * f
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val y3 = y0 + dy10 * f
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val x4 = x1 - dx10 * f
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val y4 = y1 - dy10 * f
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val x5 = x1 + dx21 * f
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val y5 = y1 + dy21 * f
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moveOrLineTo(x3, y3)
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lineTo(x4, y4)
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curveTo(x1, y1, x5, y5)
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}
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close()
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}
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return c
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}
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fun regularPolygonBeveled(sides: Int, bevelFactor: Double = 0.5, center: Vector2 = Vector2.ZERO, radius: Double = 100.0, phase: Double = 0.0): ShapeContour {
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val c = contour {
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val phi = phase.asRadians
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for (i in 0 until sides) {
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val x0 = center.x + radius * cos(i.toDouble() / sides * PI * 2 + phi)
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val y0 = center.y + radius * sin(i.toDouble() / sides * PI * 2 + phi)
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val x1 = center.x + radius * cos((i + 1.0) / sides * PI * 2 + phi)
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val y1 = center.y + radius * sin((i + 1.0) / sides * PI * 2 + phi)
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val x2 = center.x + radius * cos((i + 2.0) / sides * PI * 2 + phi)
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val y2 = center.y + radius * sin((i + 2.0) / sides * PI * 2 + phi)
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val f = bevelFactor / 2.0
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val dx10 = x1 - x0
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val dy10 = y1 - y0
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val dx21 = x2 - x1
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val dy21 = y2 - y1
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val x3 = x0 + dx10 * f
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val y3 = y0 + dy10 * f
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val x4 = x1 - dx10 * f
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val y4 = y1 - dy10 * f
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val x5 = x1 + dx21 * f
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val y5 = y1 + dy21 * f
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moveOrLineTo(x3, y3)
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lineTo(x4, y4)
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lineTo(x5, y5)
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}
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close()
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}
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return c
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}
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