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[orx-boofcv] Add colorBuffer resizeTo (#151)

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This commit is contained in:
Ricardo Matias
2020-09-11 10:31:59 +02:00
committed by GitHub
parent 26de896756
commit 847ad68868
3 changed files with 95 additions and 5 deletions
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8
orx-boofcv/src/demo/kotlin/DemoResize01.kt
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@@ -15,11 +15,11 @@ fun main() {
}
// Load an image, convert to BoofCV format using orx-boofcv
val input = loadImage("demo-data/images/image-001.png").toPlanarU8()
val input = loadImage("demo-data/images/image-001.png")
val scaled = input.resize(0.5).toColorBuffer()
val scaled2 = input.resize(0.25).toColorBuffer()
val scaled3 = input.resize(0.1).toColorBuffer()
val scaled = input.resizeBy(0.5)
val scaled2 = input.resizeBy(0.25, convertToGray = true)
val scaled3 = input.resizeBy(0.1)
extend {
drawer.clear(ColorRGBa.BLACK)

32
orx-boofcv/src/demo/kotlin/DemoResize02.kt Normal file
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@@ -0,0 +1,32 @@
import org.openrndr.application
import org.openrndr.boofcv.binding.*
import org.openrndr.color.ColorRGBa
import org.openrndr.draw.loadImage
import org.openrndr.extensions.SingleScreenshot
fun main() {
application {
program {
if (System.getProperty("takeScreenshot") == "true") {
extend(SingleScreenshot()) {
this.outputFile = System.getProperty("screenshotPath")
}
}
// Load an image, convert to BoofCV format using orx-boofcv
val input = loadImage("demo-data/images/image-001.png")
val scaled = input.resizeTo(input.width / 3)
val scaled2 = input.resizeTo(newHeight = input.height / 4, convertToGray = true)
val scaled3 = input.resizeTo(input.width / 5, input.height / 5)
extend {
drawer.clear(ColorRGBa.BLACK)
drawer.translate(0.0, (height - scaled.bounds.height) / 2.0)
drawer.image(scaled)
drawer.image(scaled2, scaled.bounds.width, scaled.bounds.height - scaled2.height)
drawer.image(scaled3, scaled.bounds.width + scaled2.bounds.width, scaled.bounds.height - scaled3.height)
}
}
}
}

60
orx-boofcv/src/main/kotlin/Distortion.kt
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@@ -2,11 +2,69 @@ package org.openrndr.boofcv.binding
import boofcv.abst.distort.FDistort
import boofcv.struct.image.ImageBase
import org.openrndr.draw.ColorBuffer
import org.openrndr.draw.ColorType
import kotlin.math.roundToInt
fun <T : ImageBase<out ImageBase<*>>?> ImageBase<T>.resize(scaleX: Double, scaleY: Double = scaleX): T {
fun <T : ImageBase<out ImageBase<*>>?> ImageBase<T>.resizeBy(scaleX: Double, scaleY: Double = scaleX): T {
val scaled = this.createNew((this.width * scaleX).toInt(), (this.height * scaleY).toInt())
FDistort(this, scaled).scaleExt().apply()
return scaled
}
fun <T : ImageBase<out ImageBase<*>>?> ImageBase<T>.resizeTo(newWidth: Int? = null, newHeight: Int? = null): T {
val ar = this.width / this.height.toDouble()
val scaled = (if (newWidth != null && newHeight != null) {
val w = newWidth
val h = newHeight
this.createNew(w, h)
} else if (newWidth != null && newHeight == null) {
val w = newWidth
val h = newWidth / ar
this.createNew(w, h.roundToInt())
} else if (newWidth == null && newHeight != null) {
val w = newHeight * ar
val h = newHeight
this.createNew(w.roundToInt(), h)
} else {
this.createNew(this.width, this.height)
})
FDistort(this, scaled).scaleExt().apply()
return scaled
}
fun ColorBuffer.resizeBy(scaleX: Double, scaleY: Double = scaleX, convertToGray: Boolean = false): ColorBuffer {
return if (convertToGray) {
when (this.type) {
ColorType.FLOAT32, ColorType.FLOAT16 -> this.toGrayF32().resizeBy(scaleX, scaleY).toColorBuffer()
else -> this.toGrayU8().resizeBy(scaleX, scaleY).toColorBuffer()
}
} else {
when (this.type) {
ColorType.FLOAT32, ColorType.FLOAT16 -> this.toPlanarF32().resizeBy(scaleX, scaleY).toColorBuffer()
else -> this.toPlanarU8().resizeBy(scaleX, scaleY).toColorBuffer()
}
}
}
fun ColorBuffer.resizeTo(newWidth: Int? = null, newHeight: Int? = null, convertToGray: Boolean = false): ColorBuffer {
return if (convertToGray) {
when (this.type) {
ColorType.FLOAT32, ColorType.FLOAT16 -> this.toGrayF32().resizeTo(newWidth, newHeight).toColorBuffer()
else -> this.toGrayU8().resizeTo(newWidth, newHeight).toColorBuffer()
}
} else {
when (this.type) {
ColorType.FLOAT32, ColorType.FLOAT16 -> this.toPlanarF32().resizeTo(newWidth, newHeight).toColorBuffer()
else -> this.toPlanarU8().resizeTo(newWidth, newHeight).toColorBuffer()
}
}
}