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[orx-marching-squares] Add orx-marching-squares module

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This commit is contained in:
Edwin Jakobs
2023-02-02 18:24:07 +01:00
parent 4422f114ba
commit 5038fd0fc3
9 changed files with 265 additions and 0 deletions
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22
orx-marching-squares/src/jvmDemo/kotlin/FindContours01.kt Normal file
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import org.openrndr.application
import org.openrndr.color.ColorRGBa
import org.openrndr.extra.marchingsquares.findContours
import org.openrndr.math.Vector2
fun main() {
application {
configure {
width = 720
height = 720
}
program {
extend {
drawer.clear(ColorRGBa.BLACK)
drawer.stroke = ColorRGBa.PINK
fun f(v: Vector2) = v.distanceTo(drawer.bounds.center) - 200.0
val segments = findContours(::f, drawer.bounds, 16.0)
drawer.lineSegments(segments)
}
}
}
}

24
orx-marching-squares/src/jvmDemo/kotlin/FindContours02.kt Normal file
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import org.openrndr.application
import org.openrndr.color.ColorRGBa
import org.openrndr.extra.marchingsquares.findContours
import org.openrndr.math.Vector2
import kotlin.math.PI
import kotlin.math.cos
fun main() {
application {
configure {
width = 720
height = 720
}
program {
extend {
drawer.clear(ColorRGBa.BLACK)
drawer.stroke = ColorRGBa.PINK
fun f(v: Vector2) = cos((v.distanceTo(drawer.bounds.center) / 100.0) * 2 * PI)
val segments = findContours(::f, drawer.bounds.offsetEdges(32.0), 16.0)
drawer.lineSegments(segments)
}
}
}
}

30
orx-marching-squares/src/jvmDemo/kotlin/FindContours03.kt Normal file
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import org.openrndr.application
import org.openrndr.color.ColorRGBa
import org.openrndr.extra.marchingsquares.findContours
import org.openrndr.math.Vector2
import kotlin.math.PI
import kotlin.math.cos
import kotlin.math.sin
fun main() {
application {
configure {
width = 720
height = 720
}
program {
extend {
drawer.clear(ColorRGBa.BLACK)
drawer.stroke = ColorRGBa.PINK
fun f(v: Vector2): Double {
val p = v + Vector2(cos(v.y * 0.1 + seconds) * 40.0, sin(v.x * 0.1 + seconds) * 40.0)
return cos((p.distanceTo(drawer.bounds.center) / 720.0) * 6 * PI)
}
val segments = findContours(::f, drawer.bounds.offsetEdges(32.0), 4.0)
drawer.lineSegments(segments)
}
}
}
}

36
orx-marching-squares/src/jvmDemo/kotlin/FindContours04.kt Normal file
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import org.openrndr.application
import org.openrndr.color.ColorRGBa
import org.openrndr.draw.grayscale
import org.openrndr.draw.loadImage
import org.openrndr.extra.marchingsquares.findContours
import org.openrndr.math.Vector2
import kotlin.math.PI
import kotlin.math.cos
import kotlin.math.sin
fun main() {
application {
configure {
width = 640
height = 480
}
program {
val image = loadImage("demo-data/images/image-001.png")
image.shadow.download()
extend {
drawer.clear(ColorRGBa.BLACK)
drawer.stroke = ColorRGBa.BLACK
fun f(v: Vector2): Double {
val iv = v.toInt()
val d = if (iv.x >= 0 && iv.y >= 0 && iv.x < image.width && iv.y < image.height) image.shadow[iv.x, iv.y].luminance else 0.0
return cos(d * PI * 8.0 + seconds)
}
val segments = findContours(::f, drawer.bounds.offsetEdges(32.0), 4.0)
drawer.drawStyle.colorMatrix = grayscale()
drawer.image(image)
drawer.lineSegments(segments)
}
}
}
}