commonMain.path3d.Path3DExtensions.kt Maven / Gradle / Ivy
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package org.openrndr.extra.shapes.path3d
import org.openrndr.math.Matrix44
import org.openrndr.math.Vector2
import org.openrndr.math.Vector3
import org.openrndr.shape.*
private val Segment2D.vertices: List
get() {
return when (type) {
SegmentType.LINEAR -> listOf(start, end)
SegmentType.QUADRATIC -> listOf(start, control[0], end)
SegmentType.CUBIC -> listOf(start, control[0], control[1], end)
}
}
/**
* Projects [Path3D] to [ShapeContour]
* @param projection The projection matrix to use
* @param view The view matrix to use
* @param width The viewport width
* @param height The viewport height
* @since orx 0.4.5
*/
fun Path3D.projectToContour(projection: Matrix44, view: Matrix44, width: Int, height: Int): ShapeContour {
val ps = segments.map { it.projectToSegment2D(projection, view, width, height) }
val ok = (ps.asSequence().flatMap { it.vertices }.all { it.x == it.x && it.y == it.y })
if (ok)
return ShapeContour(ps, closed)
else
return ShapeContour.EMPTY
}
/**
* Projects [Segment3D] to [Segment2D]
* @param projection The projection matrix to use
* @param view The view matrix to use
* @param width The viewport width
* @param height The viewport height
* @since orx 0.4.5
*/
fun Segment3D.projectToSegment2D(projection: Matrix44, view: Matrix44, width: Int, height: Int): Segment2D {
fun Vector3.project(): Vector2 {
val p3 = org.openrndr.math.transforms.project(this, projection, view, width, height)
return p3.xy
}
return when (control.size) {
0 -> Segment2D(start.project(), end.project())
1 -> Segment2D(start.project(), control[0].project(), end.project())
2 -> Segment2D(start.project(), control[0].project(), control[1].project(), end.project())
else -> error("not supported")
}
}
/**
* Convert [ShapeContour] to [Path3D]
* @since orx 0.4.5
*/
fun ShapeContour.toPath3D(): Path3D = Path3D.fromSegments(segments.map { it.toSegment3D() }, closed)
/**
* Convert [Segment2D to [Segment3D]
* @since orx 0.4.5
*/
fun Segment2D.toSegment3D(): Segment3D = Segment3D(start.xy0, control.map { c -> c.xy0 }, end.xy0)
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