JarCasting
Korma
Korma is a Mathematical Library mostly focused on geometry for Multiplatform Kotlin 1.3
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Info:
It includes structures for Points and Matrices (2D and 3D), Typed Angles, Rectangles, BoundsBuilder, Anchors, Vector graphics with Bezier curves support and Context2D-like API for building vectors, Interpolation facilities, Easing, Triangulation, BinPacking and Path Finding in Bidimensional arrays and Triangulated Spatial Meshes.
Full Documentation: https://korlibs.soywiz.com/korma/
Some samples:
val vector = VectorPath {
// Here we can use moveTo, lineTo, quadTo, cubicTo, circle, ellipse, arc...
rect(0, 0, 100, 100)
rect(300, 0, 100, 100)
}.triangulate().toString()
// "[[Triangle((0, 100), (100, 0), (100, 100)), Triangle((0, 100), (0, 0), (100, 0))], [Triangle((300, 100), (400, 0), (400, 100)), Triangle((300, 100), (300, 0), (400, 0))]]"
// Angles
val angle = 90.degrees
val angleInRadians = angle.radians
// Matrices
val a = Matrix(2, 1, 1, 2, 10, 10)
val b = a.inverted()
assertEquals(identity, a * b)
// Rectangle + ScaleMode + Anchor
assertEquals(Rectangle(0, -150, 600, 600), Size(100, 100).applyScaleMode(Rectangle(0, 0, 600, 300), ScaleMode.COVER, Anchor.MIDDLE_CENTER))
// PathFinding (Matrix)
val points = AStar.find(
board = Array2("""
.#....
.#.##.
.#.#..
...#..
""") { c, x, y -> c == '#' },
x0 = 0,
y0 = 0,
x1 = 4,
y1 = 2,
findClosest = false
)
println(points)
// [(0, 0), (0, 1), (0, 2), (0, 3), (1, 3), (2, 3), (2, 2), (2, 1), (2, 0), (3, 0), (4, 0), (5, 0), (5, 1), (5, 2), (4, 2)]
// PathFinding (Shape)
assertEquals(
"[(10, 10), (100, 50), (120, 52)]",
(Rectangle(0, 0, 100, 100).toShape() + Rectangle(100, 50, 50, 50).toShape()).pathFind(
IPoint(10, 10),
IPoint(120, 52)
).toString()
)
Usage with gradle:
def kormaVersion = "1.9.1"
repositories {
maven { url "https://dl.bintray.com/korlibs/korlibs" }
}
dependencies {
// For multiplatform projects
implementation "com.soywiz.korlibs.korma:korma:$kormaVersion"
// For JVM/Android only
implementation "com.soywiz.korlibs.korma:korma-jvm:$kormaVersion"
// For JS only
implementation "com.soywiz.korlibs.korma:korma-js:$kormaVersion"
}
// Additional funcionality using Clipper and poly2try code (with separate licenses):
// - https://github.com/korlibs/korma/blob/master/korma-shape/LICENSE
dependencies {
implementation "com.soywiz.korlibs.korma:korma-shape:$kormaVersion"
}
// settigs.gradle
enableFeaturePreview('GRADLE_METADATA')
