Examples of org.geotools.referencing.operation.matrix.XMatrix.multiply()

Package org.geotools.referencing.operation.matrix

Class org.geotools.referencing.operation.matrix.XMatrix

Examples of org.geotools.referencing.operation.matrix.XMatrix.multiply()

org.geotools.referencing.operation.matrix.XMatrix.multiply()
Sets the value of this matrix to the result of multiplying itself with the specified matrix. In other words, performs {@code this} = {@code this} × {@code matrix}. In the context of coordinate transformations, this is equivalent to {@linkplain java.awt.geom.AffineTransform#concatenate AffineTransform.concatenate}: first transforms by the supplied transform and then transform the result by the original transform. @param matrix The matrix to multiply to this matrix.

             *       by the original transform.
             *
             * We compute: matrix = normalizeTarget * datumShift * normalizeSource
             */
            matrix = new Matrix4(normalizeTarget);
            matrix.multiply(datumShift);
            matrix.multiply(normalizeSource);
        } catch (SingularMatrixException cause) {
            throw new OperationNotFoundException(getErrorMessage(sourceDatum, targetDatum), cause);
        }
        return createFromAffineTransform(identifier, sourceCRS, targetCRS, matrix);

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             *
             * We compute: matrix = normalizeTarget * datumShift * normalizeSource
             */
            matrix = new Matrix4(normalizeTarget);
            matrix.multiply(datumShift);
            matrix.multiply(normalizeSource);
        } catch (SingularMatrixException cause) {
            throw new OperationNotFoundException(getErrorMessage(sourceDatum, targetDatum), cause);
        }
        return createFromAffineTransform(identifier, sourceCRS, targetCRS, matrix);
    }

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     */
    @Override
    public Matrix derivative(final Point2D point) throws TransformException {
        final XMatrix matrix1 = toXMatrix(transform1.derivative(point));
        final XMatrix matrix2 = toXMatrix(transform2.derivative(transform1.transform(point,null)));
        matrix2.multiply(matrix1);
        return matrix2;
    }


    /**
     * Creates the inverse transform of this object.

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        final int numRow = matrix2.getNumRow();
        final int numCol = matrix1.getNumCol();
        final XMatrix matrix;
        if (numCol == matrix2.getNumCol()) {
            matrix = toXMatrix(matrix2);
            matrix.multiply(matrix1);
        } else {
            final GeneralMatrix m = new GeneralMatrix(numRow, numCol);
            m.mul(toGMatrix(matrix2), toGMatrix(matrix1));
            matrix = m;
        }

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    private XMatrix applyProjectedScale(final XMatrix normalizedToProjection) {
        if (projectedScale == null) {
            return normalizedToProjection;
        }
        final XMatrix scale = MatrixFactory.create(projectedScale);
        scale.multiply(normalizedToProjection);
        return scale;
    }


    /**
     * Returns a conversion from a source to target projected CRS, if this conversion

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         *   3) add the new false northing/easting
         */
        targetScale = target.applyProjectedScale(targetScale);
        sourceScale = source.applyProjectedScale(sourceScale);
        sourceScale.invert();
        targetScale.multiply(sourceScale);
        if (targetScale.isIdentity(errorTolerance)) {
            targetScale.setIdentity();
        }
        return targetScale;
    }

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