Example usage for android.graphics Matrix Matrix

Introduction

In this page you can find the example usage for android.graphics Matrix Matrix.

Prototype

public Matrix()

Source Link

Document

Create an identity matrix

Usage

From source file:Main.java

/**
 * Calculates the transformation matrix according to M(transformation) * M(source) = M(target).
 *
 * @param source source matrix/*from  www.  j a  v  a  2  s . c  o m*/
 * @param target target matrix
 * @return delta matrix
 */
public static Matrix getTransformationMatrix(Matrix source, Matrix target) {
    Matrix delta = new Matrix();
    source.invert(delta);
    delta.postConcat(target);
    return delta;
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) {
    int w = bitmap.getWidth();
    int h = bitmap.getHeight();
    Matrix matrix = new Matrix();
    float scaleWidth = ((float) width / w);
    float scaleHeight = ((float) height / h);
    matrix.postScale(scaleWidth, scaleHeight);
    Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
    return newbmp;
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, float sx, float sy) {
    Matrix matrix = new Matrix();
    matrix.postScale(sx, sy);//from w  w  w.ja v  a2s  . c o m
    return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}

From source file:Main.java

public static Bitmap createReflectionImageWithOrigin(Bitmap bitmap) {
    int i = bitmap.getWidth();
    int j = bitmap.getHeight();
    Matrix matrix = new Matrix();
    matrix.preScale(1.0F, -1F);/*ww w . ja  v a  2s  . c o  m*/
    Bitmap bitmap1 = Bitmap.createBitmap(bitmap, 0, j / 2, i, j / 2, matrix, false);
    Bitmap bitmap2 = Bitmap.createBitmap(i, j + j / 2, android.graphics.Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap2);
    canvas.drawBitmap(bitmap, 0.0F, 0.0F, null);
    Paint paint = new Paint();
    canvas.drawRect(0.0F, j, i, j + 4, paint);
    canvas.drawBitmap(bitmap1, 0.0F, j + 4, null);
    Paint paint1 = new Paint();
    paint1.setShader(new LinearGradient(0.0F, bitmap.getHeight(), 0.0F, 4 + bitmap2.getHeight(), 0x70ffffff,
            0xffffff, android.graphics.Shader.TileMode.CLAMP));
    paint1.setXfermode(new PorterDuffXfermode(android.graphics.PorterDuff.Mode.DST_IN));
    canvas.drawRect(0.0F, j, i, 4 + bitmap2.getHeight(), paint1);
    return bitmap2;
}

From source file:Main.java

/**
 * Method to rotate a Bitmap specifying the angle.
 *
 * @param source The original Bitmap.//  ww w.j av a2 s  .  co m
 * @param angle  float that represents the rotation angle.
 * @return The rotated Bitmap.
 */
public static Bitmap rotate(Bitmap source, float angle) {
    Matrix matrix = new Matrix();
    matrix.postRotate(angle);
    return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, float w, float h) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Matrix matrix = new Matrix();
    float scaleW = ((float) w / width);
    float scaleH = ((float) h / height);
    matrix.postScale(scaleW, scaleH);/*from   w  w w . j  a  v a2 s.c om*/
    Bitmap newBmp = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);

    return newBmp;
}

From source file:Main.java

/**
 * reversal bitmap at left-right/*from  www.ja  v  a2 s  .  c  o m*/
 * 
 * @param originalImage
 * @return the bitmap after reversal
 */
public static Bitmap createReversal(Bitmap originalImage) {
    int width = originalImage.getWidth();
    int height = originalImage.getHeight();

    Matrix matrix = new Matrix();
    matrix.preScale(-1.0f, 1.0f);

    return Bitmap.createBitmap(originalImage, 0, 0, width, height, matrix, false);
}

From source file:Main.java

public static Bitmap scaleImage(Bitmap bitmap, int destW, int destH) {
    if (bitmap == null) {
        return null;
    }/*from   w w  w.  java  2 s  .  com*/
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();

    float scaleWidth = ((float) destW) / width;
    float scaleHeight = ((float) destH) / height;

    Matrix matrix = new Matrix();
    matrix.postScale(scaleWidth, scaleHeight);
    Bitmap scaledBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
    return scaledBitmap;
}

From source file:Main.java

/**
 * scale image/*from www  .  j  a v  a 2 s.c o m*/
 *
 * @param org
 * @param scaleWidth  sacle of width
 * @param scaleHeight scale of height
 * @return
 */
public static Bitmap scaleImage(Bitmap org, float scaleWidth, float scaleHeight) {
    if (org == null) {
        return null;
    }
    Matrix matrix = new Matrix();
    matrix.postScale(scaleWidth, scaleHeight);
    return Bitmap.createBitmap(org, 0, 0, org.getWidth(), org.getHeight(), matrix, true);
}

From source file:Main.java

public static Bitmap scaleImg(Bitmap bm, int newWidth, int newHeight) {

    int width = bm.getWidth();
    int height = bm.getHeight();

    int newWidth1 = newWidth;
    int newHeight1 = newHeight;

    float scaleWidth = ((float) newWidth1) / width;
    float scaleHeight = ((float) newHeight1) / height;

    Matrix matrix = new Matrix();
    matrix.postScale(scaleWidth, scaleHeight);

    Bitmap newbm = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, true);
    return newbm;

}