jsl-decora.PerspectiveTransform.jsl Maven / Gradle / Ivy
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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<<
private float[][] getITX() {
PerspectiveTransformState state = (PerspectiveTransformState)
AccessHelper.getState(getEffect());
return state.getITX();
}
private float[] getTx0() {
Rectangle ib = getInputBounds(0);
Rectangle nb = getInputNativeBounds(0);
float scalex = (float) ib.width / (float) nb.width;
float itx0[] = getITX()[0];
return new float[] { itx0[0] * scalex, itx0[1] * scalex, itx0[2] * scalex };
}
private float[] getTx1() {
Rectangle ib = getInputBounds(0);
Rectangle nb = getInputNativeBounds(0);
float scaley = (float) ib.height / (float) nb.height;
float itx1[] = getITX()[1];
return new float[] { itx1[0] * scaley, itx1[1] * scaley, itx1[2] * scaley };
}
private float[] getTx2() {
return getITX()[2];
}
@Override
public int getTextureCoordinates(int inputIndex, float coords[],
float srcX, float srcY,
float srcNativeWidth,
float srcNativeHeight,
Rectangle dstBounds,
com.sun.javafx.geom.transform.BaseTransform transform)
{
coords[0] = dstBounds.x;
coords[1] = dstBounds.y;
coords[2] = dstBounds.x + dstBounds.width;
coords[3] = dstBounds.y + dstBounds.height;
return 4;
}
>>
param lsampler baseImg;
param float3 tx0;
param float3 tx1;
param float3 tx2;
void main()
{
float3 p1;
float3 p2;
p1 = float3(pos0.x, pos0.y, 1.0);
p2.z = dot(p1, tx2);
p2.x = dot(p1, tx0) / p2.z;
p2.y = dot(p1, tx1) / p2.z;
color = sample(baseImg, p2.xy);
}