91 lines
2.5 KiB
Kotlin
91 lines
2.5 KiB
Kotlin
package org.openrndr.extras.imageFit
|
|
|
|
import org.openrndr.draw.ColorBuffer
|
|
import org.openrndr.draw.Drawer
|
|
import org.openrndr.math.map
|
|
import org.openrndr.shape.Rectangle
|
|
|
|
|
|
enum class FitMethod {
|
|
Cover,
|
|
Contain
|
|
}
|
|
|
|
fun Drawer.imageFit(
|
|
img: ColorBuffer,
|
|
x: Double = 0.0,
|
|
y: Double = 0.0,
|
|
width: Double = img.width.toDouble(),
|
|
height: Double = img.height.toDouble(),
|
|
fitMethod: FitMethod = FitMethod.Cover,
|
|
horizontalPosition: Double = 0.0,
|
|
verticalPosition: Double = 0.0
|
|
) {
|
|
val sourceWidth = img.width.toDouble()
|
|
val sourceHeight = img.height.toDouble()
|
|
|
|
var targetX = x
|
|
var targetY = y
|
|
|
|
var targetWidth: Double
|
|
var targetHeight: Double
|
|
|
|
val source: Rectangle
|
|
val target: Rectangle
|
|
|
|
when (fitMethod) {
|
|
FitMethod.Contain -> {
|
|
targetWidth = width
|
|
targetHeight = height
|
|
|
|
if (width <= targetWidth) {
|
|
targetWidth = width
|
|
targetHeight = (sourceHeight / sourceWidth) * width
|
|
}
|
|
|
|
if (height <= targetHeight) {
|
|
targetHeight = height
|
|
targetWidth = (sourceWidth / sourceHeight) * height
|
|
}
|
|
|
|
val left = x
|
|
val right = x + width - targetWidth
|
|
val top = y
|
|
val bottom = y + height - targetHeight
|
|
|
|
targetX = map(-1.0, 1.0, left, right, horizontalPosition)
|
|
targetY = map(-1.0, 1.0, top, bottom, verticalPosition)
|
|
|
|
source = Rectangle(0.0, 0.0, sourceWidth, sourceHeight)
|
|
target = Rectangle(targetX, targetY, targetWidth, targetHeight)
|
|
}
|
|
|
|
FitMethod.Cover -> {
|
|
targetWidth = sourceWidth
|
|
targetHeight = sourceHeight
|
|
|
|
if (sourceWidth <= targetWidth) {
|
|
targetWidth = sourceWidth
|
|
targetHeight = (height / width) * sourceWidth
|
|
}
|
|
|
|
if (sourceHeight <= targetHeight) {
|
|
targetHeight = sourceHeight
|
|
targetWidth = (width / height) * sourceHeight
|
|
}
|
|
|
|
val left = 0.0
|
|
val right = sourceWidth - targetWidth
|
|
val top = 0.0
|
|
val bottom = sourceHeight - targetHeight
|
|
|
|
targetX = map(-1.0, 1.0, left, right, horizontalPosition)
|
|
targetY = map(-1.0, 1.0, top, bottom, verticalPosition)
|
|
|
|
source = Rectangle(targetX, targetY, targetWidth, targetHeight)
|
|
target = Rectangle(x, y, width, height)
|
|
}
|
|
}
|
|
|
|
image(img, source, target)
|
|
} |