Example usage for javafx.scene.image PixelReader getColor

Introduction

In this page you can find the example usage for javafx.scene.image PixelReader getColor.

Prototype

public Color getColor(int x, int y);

Source Link

Document

Reads the color of a pixel from the specified coordinates in the surface and returns the value as a Color object.

Usage

From source file:net.rptools.tokentool.util.ImageUtil.java

private static Image processMagenta(Image inputImage, int colorThreshold, boolean overlayWanted) {
    int imageWidth = (int) inputImage.getWidth();
    int imageHeight = (int) inputImage.getHeight();

    WritableImage outputImage = new WritableImage(imageWidth, imageHeight);
    PixelReader pixelReader = inputImage.getPixelReader();
    PixelWriter pixelWriter = outputImage.getPixelWriter();

    for (int readY = 0; readY < imageHeight; readY++) {
        for (int readX = 0; readX < imageWidth; readX++) {
            Color pixelColor = pixelReader.getColor(readX, readY);

            if (isMagenta(pixelColor, COLOR_THRESHOLD) == overlayWanted)
                pixelWriter.setColor(readX, readY, Color.TRANSPARENT);
            else/*from  w w  w.j  a  va 2 s .c  om*/
                pixelWriter.setColor(readX, readY, pixelColor);

        }
    }

    return outputImage;
}

---

From source file:net.rptools.tokentool.util.ImageUtil.java

private static Image clipImageWithMask(Image imageSource, Image imageMask) {
    int imageWidth = (int) imageMask.getWidth();
    int imageHeight = (int) imageMask.getHeight();

    WritableImage outputImage = new WritableImage(imageWidth, imageHeight);
    PixelReader pixelReader_Mask = imageMask.getPixelReader();
    PixelReader pixelReader_Source = imageSource.getPixelReader();
    PixelWriter pixelWriter = outputImage.getPixelWriter();

    for (int readY = 0; readY < imageHeight; readY++) {
        for (int readX = 0; readX < imageWidth; readX++) {
            Color pixelColor = pixelReader_Mask.getColor(readX, readY);

            if (pixelColor.equals(Color.TRANSPARENT))
                pixelWriter.setColor(readX, readY, pixelReader_Source.getColor(readX, readY));
        }/*from w  w  w .  j av  a2 s .  co  m*/
    }

    return outputImage;
}

---

From source file:net.rptools.tokentool.util.ImageUtil.java

private static Image autoCropImage(Image imageSource) {
    ImageView croppedImageView = new ImageView(imageSource);
    PixelReader pixelReader = imageSource.getPixelReader();

    int imageWidth = (int) imageSource.getWidth();
    int imageHeight = (int) imageSource.getHeight();
    int minX = imageWidth, minY = imageHeight, maxX = 0, maxY = 0;

    // Find the first and last pixels that are not transparent to create a bounding viewport
    for (int readY = 0; readY < imageHeight; readY++) {
        for (int readX = 0; readX < imageWidth; readX++) {
            Color pixelColor = pixelReader.getColor(readX, readY);

            if (!pixelColor.equals(Color.TRANSPARENT)) {
                if (readX < minX)
                    minX = readX;/*  w  ww .j  a  v a 2s.co  m*/
                if (readX > maxX)
                    maxX = readX;

                if (readY < minY)
                    minY = readY;
                if (readY > maxY)
                    maxY = readY;
            }
        }
    }

    if (maxX - minX <= 0 || maxY - minY <= 0)
        return new WritableImage(1, 1);

    // Create a viewport to clip the image using snapshot
    Rectangle2D viewPort = new Rectangle2D(minX, minY, maxX - minX, maxY - minY);
    SnapshotParameters parameter = new SnapshotParameters();
    parameter.setViewport(viewPort);
    parameter.setFill(Color.TRANSPARENT);

    return croppedImageView.snapshot(parameter, null);
}

---

From source file:editeurpanovisu.EditeurPanovisu.java

/**
 *
 * @param imgRect/*www .  j  a  va2s .com*/
 * @param iRapport
 * @return image transforme Mercator
 */
private static Image imgTransformationImage(Image imgRect, int iRapport) {
    int iLargeur = (int) imgRect.getWidth() / iRapport;
    int iHauteur = iLargeur / 2 / iRapport;
    WritableImage imgMercator = new WritableImage(iLargeur, iHauteur);
    PixelReader prRect = imgRect.getPixelReader();
    PixelWriter pwMercator = imgMercator.getPixelWriter();
    for (int i = 0; i < iLargeur; i++) {
        for (int j = 0; j < iHauteur; j++) {
            double phi = Math.asin(2.d * (iHauteur / 2.d - j) / iHauteur);
            int y2 = (int) (iHauteur * iRapport * (0.5d - phi / Math.PI));
            if (y2 >= iHauteur * iRapport) {
                y2 = iHauteur * iRapport - 1;
            }
            Color clPixel = prRect.getColor(i * iRapport, y2 * iRapport);
            pwMercator.setColor(i, j, clPixel);
        }
    }
    return imgMercator;
}

---