geotrellis.engine.render.RenderRasterSourceJpgMethods.scala Maven / Gradle / Ivy

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GeoTrellis is an open source geographic data processing engine for high performance applications.

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/*
 * Copyright (c) 2014 Azavea.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package geotrellis.engine.render

import geotrellis.raster._
import geotrellis.raster.render._
import geotrellis.raster.histogram.Histogram
import geotrellis.engine._

@deprecated("geotrellis-engine has been deprecated", "Geotrellis Version 0.10")
trait RenderRasterSourceJpgMethods extends RasterSourceMethods {
  /** Generate a PNG from a raster of RGBA integer values.
    *
    * Use this operation when you have created a raster whose values are already
    * RGBA color values that you wish to render into a PNG. If you have a raster
    * with data that you wish to render, you should use RenderJpg instead.
    *
    * An RGBA value is a 32 bit integer with 8 bits used for each component:
    * the first 8 bits are the red value (between 0 and 255), then green, blue,
    * and alpha (with 0 being transparent and 255 being opaque).
    */
  def renderJpg(): ValueSource[Jpg] =
    rasterSource.converge.map(_.renderJpg)

  def renderJpg(colors: Array[Int]): ValueSource[Jpg] =
    rasterSource.converge.map(_.renderJpg(colors))

  def renderJpg(colorMap: ColorMap): ValueSource[Jpg] =
    rasterSource.converge.map(_.renderJpg(colorMap))
}