package org.openrndr.extra.fx.distort

import org.openrndr.draw.Filter
import org.openrndr.draw.Shader
import org.openrndr.extra.fx.filterFragmentCode
import org.openrndr.extra.parameters.Description
import org.openrndr.extra.parameters.DoubleParameter

@Description("Block repeat")
class BlockRepeat : Filter(Shader.createFromCode(filterVertexCode, filterFragmentCode("distort/block-repeat.frag"))) {
    @DoubleParameter("block width", 0.0, 1.0, order = 0)
    var blockWidth: Double by parameters

    @DoubleParameter("block height", 0.0, 1.0, order = 1)
    var blockHeight: Double by parameters

    @DoubleParameter("block x-offset", -0.5, 0.5, order = 2)
    var blockOffsetX: Double by parameters

    @DoubleParameter("block y-offset", -0.5, 0.5, order = 3)
    var blockOffsetY: Double by parameters

    /**
     * Source scale, 0.0 is a 1:1 mapping, 1.0 fits entire source image in block
     */
    @DoubleParameter("source scale", 0.0, 1.0, order = 4)
    var sourceScale: Double by parameters

    @DoubleParameter("source x-offset", -0.5, 0.5, order = 5)
    var sourceOffsetX: Double by parameters

    @DoubleParameter("source y-offset", -.5, .5, order = 6)
    var sourceOffsetY: Double by parameters

    init {
        blockWidth = 0.25
        blockHeight = 0.25
        blockOffsetX = 0.0
        blockOffsetY = 0.0
        sourceOffsetX = 0.0
        sourceOffsetY = 0.0
        sourceScale = 0.0
    }
}