commonMain.graphics.Overlay.kt Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of konapi-jvm Show documentation

Kotlin Native for Raspberry Pi

The newest version!

package ch.softappeal.konapi.graphics

import ch.softappeal.konapi.readFile

private fun ByteArray.isSet(bit: Int) = (this[bit / 8].toInt() and (1 shl (bit % 8))) != 0
private fun ByteArray.set(bit: Int) {
    this[bit / 8] = (this[bit / 8].toInt() or (1 shl (bit % 8))).toByte()
}

public open class Overlay internal constructor(
    public val size: Int, dimension: Dimension, internal val bitmap: ByteArray,
) : Dimension(dimension) {
    init {
        require(size >= 0) { "size=$size must >= 0" }
    }

    private val bits = width * height
    public fun draw(graphics: Graphics, xTopLeft: Int, yTopLeft: Int, index: Int) {
        require(index in 0.. {}
                    DUMP_PIXEL_ON -> bitmap.set(bit)
                    else -> throw IllegalArgumentException("unexpected pixel '$p' at index $index")
                }
                bit++
            }
        }
    }
    require(!lines.hasNext()) { "unexpected lines at end" }
    return Overlay(size, dimension, bitmap)
}