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/*
* Copyright 2007, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "AffineTransform.h"
#include "FloatRect.h"
#include "IntRect.h"
#include "android_graphics.h"
namespace WebCore {
static const double deg2rad = 0.017453292519943295769; // pi/180
AffineTransform::AffineTransform()
{
m_transform.reset();
}
AffineTransform::AffineTransform(const SkMatrix& mat) : m_transform(mat) {}
AffineTransform::AffineTransform(double a, double b, double c, double d, double tx, double ty)
{
m_transform.reset();
m_transform.set(SkMatrix::kMScaleX, SkDoubleToScalar(a));
m_transform.set(SkMatrix::kMSkewX, SkDoubleToScalar(b));
m_transform.set(SkMatrix::kMTransX, SkDoubleToScalar(tx));
m_transform.set(SkMatrix::kMScaleY, SkDoubleToScalar(d));
m_transform.set(SkMatrix::kMSkewX, SkDoubleToScalar(c));
m_transform.set(SkMatrix::kMTransX, SkDoubleToScalar(ty));
}
void AffineTransform::setMatrix(double a, double b, double c, double d, double tx, double ty)
{
m_transform.set(SkMatrix::kMScaleX, SkDoubleToScalar(a));
m_transform.set(SkMatrix::kMSkewX, SkDoubleToScalar(b));
m_transform.set(SkMatrix::kMTransX, SkDoubleToScalar(tx));
m_transform.set(SkMatrix::kMScaleY, SkDoubleToScalar(d));
m_transform.set(SkMatrix::kMSkewX, SkDoubleToScalar(c));
m_transform.set(SkMatrix::kMTransX, SkDoubleToScalar(ty));
}
void AffineTransform::map(double x, double y, double *x2, double *y2) const
{
SkPoint src, dst;
src.set(SkDoubleToScalar(x), SkDoubleToScalar(y));
m_transform.mapPoints(&dst, &src, 1);
*x2 = SkScalarToDouble(dst.fX);
*y2 = SkScalarToDouble(dst.fY);
}
IntRect AffineTransform::mapRect(const IntRect &rect) const
{
SkRect src, dst;
SkIRect ir;
android_setrect(&src, rect);
m_transform.mapRect(&dst, src);
dst.round(&ir);
return IntRect(ir.fLeft, ir.fTop, ir.width(), ir.height());
}
FloatRect AffineTransform::mapRect(const FloatRect &rect) const
{
SkRect src, dst;
SkIRect ir;
android_setrect(&src, rect);
m_transform.mapRect(&dst, src);
dst.round(&ir);
return IntRect(ir.fLeft, ir.fTop, ir.width(), ir.height());
}
bool AffineTransform::isIdentity() const
{
return m_transform.isIdentity();
}
void AffineTransform::reset()
{
m_transform.reset();
}
double AffineTransform::a() const {
return SkScalarToDouble(m_transform[0]);
}
void AffineTransform::setA(double a) {
m_transform.set(0, SkDoubleToScalar(a));
}
double AffineTransform::b() const {
return SkScalarToDouble(m_transform[1]);
}
void AffineTransform::setB(double b) {
m_transform.set(1, SkDoubleToScalar(b));
}
double AffineTransform::c() const {
return SkScalarToDouble(m_transform[3]);
}
void AffineTransform::setC(double c) {
m_transform.set(3, SkDoubleToScalar(c));
}
double AffineTransform::d() const {
return SkScalarToDouble(m_transform[4]);
}
void AffineTransform::setD(double d) {
m_transform.set(4, SkDoubleToScalar(d));
}
double AffineTransform::e() const {
return SkScalarToDouble(m_transform[2]);
}
void AffineTransform::setE(double e) {
m_transform.set(2, SkDoubleToScalar(e));
}
double AffineTransform::f() const {
return SkScalarToDouble(m_transform[5]);
}
void AffineTransform::setF(double f) {
m_transform.set(5, SkDoubleToScalar(f));
}
AffineTransform &AffineTransform::scale(double sx, double sy)
{
m_transform.preScale(SkDoubleToScalar(sx), SkDoubleToScalar(sy));
return *this;
}
AffineTransform &AffineTransform::rotate(double d)
{
m_transform.preRotate(SkDoubleToScalar(d));
return *this;
}
AffineTransform &AffineTransform::translate(double tx, double ty)
{
m_transform.preTranslate(SkDoubleToScalar(tx), SkDoubleToScalar(ty));
return *this;
}
AffineTransform &AffineTransform::shear(double sx, double sy)
{
m_transform.preSkew(SkDoubleToScalar(sx), SkDoubleToScalar(sy));
return *this;
}
double AffineTransform::det() const
{
return SkScalarToDouble(m_transform[SkMatrix::kMScaleX]) * SkScalarToDouble(m_transform[SkMatrix::kMScaleY]) -
SkScalarToDouble(m_transform[SkMatrix::kMSkewX]) * SkScalarToDouble(m_transform[SkMatrix::kMSkewY]);
}
AffineTransform AffineTransform::inverse() const
{
AffineTransform inverse;
m_transform.invert(&inverse.m_transform);
return inverse;
}
AffineTransform::operator SkMatrix() const
{
return m_transform;
}
bool AffineTransform::operator==(const AffineTransform &m2) const
{
return m_transform == m2.m_transform;
}
AffineTransform &AffineTransform::operator*= (const AffineTransform &m2)
{
m_transform.setConcat(m2.m_transform, m_transform);
return *this;
}
AffineTransform AffineTransform::operator* (const AffineTransform &m2)
{
AffineTransform cat;
cat.m_transform.setConcat(m2.m_transform, m_transform);
return cat;
}
}
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