float x = srcPts[srcOff++];
float y = srcPts[srcOff++];
dstPts[dstOff++] = (float) (m00 * x + m01 * y + m02);
- dstPts[dstOff++] = (float) (m10 * x + m10 * y + m12);
+ dstPts[dstOff++] = (float) (m10 * x + m11 * y + m12);
}
}
double x = srcPts[srcOff++];
double y = srcPts[srcOff++];
dstPts[dstOff++] = m00 * x + m01 * y + m02;
- dstPts[dstOff++] = m10 * x + m10 * y + m12;
+ dstPts[dstOff++] = m10 * x + m11 * y + m12;
}
}
float x = srcPts[srcOff++];
float y = srcPts[srcOff++];
dstPts[dstOff++] = m00 * x + m01 * y + m02;
- dstPts[dstOff++] = m10 * x + m10 * y + m12;
+ dstPts[dstOff++] = m10 * x + m11 * y + m12;
}
}
double x = srcPts[srcOff++];
double y = srcPts[srcOff++];
dstPts[dstOff++] = (float) (m00 * x + m01 * y + m02);
- dstPts[dstOff++] = (float) (m10 * x + m10 * y + m12);
+ dstPts[dstOff++] = (float) (m10 * x + m11 * y + m12);
}
}
limit = -1;
else if (e == 0)
limit = type;
- else if (e <= 90)
+ else if (e <= Math.PI / 2.0)
limit = type + 1;
- else if (e <= 180)
+ else if (e <= Math.PI)
limit = type + 2;
- else if (e <= 270)
+ else if (e <= 3.0 * (Math.PI / 2.0))
limit = type + 3;
else
limit = type + 4;
*/
public int currentSegment(float[] coords)
{
- if (current > limit)
- throw new NoSuchElementException("arc iterator out of bounds");
- if (current == 0)
- {
- coords[0] = (float) (Math.cos(start) * w + x) / 2;
- coords[1] = (float) (Math.sin(start) * h + y) / 2;
- if (xform != null)
- xform.transform(coords, 0, coords, 0, 1);
- return SEG_MOVETO;
- }
- if (type != OPEN && current == limit)
- return SEG_CLOSE;
- if (type == PIE && current == limit - 1)
- {
- coords[0] = (float) (x + w / 2);
- coords[1] = (float) (y + h / 2);
- if (xform != null)
- xform.transform(coords, 0, coords, 0, 1);
- return SEG_LINETO;
- }
- // XXX Fill coords with 2 control points and next quarter point
- coords[0] = (float) 0;
- coords[1] = (float) 0;
- coords[2] = (float) 0;
- coords[3] = (float) 0;
- coords[4] = (float) 0;
- coords[5] = (float) 0;
- if (xform != null)
- xform.transform(coords, 0, coords, 0, 3);
- return SEG_CUBICTO;
+ double[] double_coords = new double[6];
+ int code = currentSegment (double_coords);
+ for (int i = 0; i < 6; ++i)
+ coords[i] = (float) double_coords[i];
+ return code;
}
/**
*/
public int currentSegment(double[] coords)
{
+ double rx = w/2;
+ double ry = h/2;
+ double xmid = x + rx;
+ double ymid = y + ry;
+
if (current > limit)
throw new NoSuchElementException("arc iterator out of bounds");
+
if (current == 0)
{
- coords[0] = (Math.cos(start) * w + x) / 2;
- coords[1] = (Math.sin(start) * h + y) / 2;
+ coords[0] = xmid + rx * Math.cos(start);
+ coords[1] = ymid - ry * Math.sin(start);
if (xform != null)
xform.transform(coords, 0, coords, 0, 1);
return SEG_MOVETO;
}
+
if (type != OPEN && current == limit)
return SEG_CLOSE;
- if (type == PIE && current == limit - 1)
+
+ if ((current == limit - 1) &&
+ (type == PIE) || (type == CHORD))
{
- coords[0] = (float) (x + w / 2);
- coords[1] = (float) (y + h / 2);
+ if (type == PIE)
+ {
+ coords[0] = xmid;
+ coords[1] = ymid;
+ }
+ else if (type == CHORD)
+ {
+ coords[0] = xmid + rx * Math.cos(start);
+ coords[1] = ymid - ry * Math.sin(start);
+ }
if (xform != null)
xform.transform(coords, 0, coords, 0, 1);
return SEG_LINETO;
}
- // XXX Fill coords with 2 control points and next quarter point
- coords[0] = 0;
- coords[1] = 0;
- coords[2] = 0;
- coords[3] = 0;
- coords[4] = 0;
- coords[5] = 0;
+
+ // note that this produces a cubic approximation of the arc segment,
+ // not a true ellipsoid. there's no ellipsoid path segment code,
+ // unfortunately. the cubic approximation looks about right, though.
+
+ double kappa = (Math.sqrt(2.0) - 1.0) * (4.0 / 3.0);
+ double quad = (Math.PI / 2.0);
+
+ double curr_begin = start + (current - 1) * quad;
+ double curr_extent = Math.min((start + extent) - curr_begin, quad);
+ double portion_of_a_quadrant = curr_extent / quad;
+
+ double x0 = xmid + rx * Math.cos(curr_begin);
+ double y0 = ymid - ry * Math.sin(curr_begin);
+
+ double x1 = xmid + rx * Math.cos(curr_begin + curr_extent);
+ double y1 = ymid - ry * Math.sin(curr_begin + curr_extent);
+
+ AffineTransform trans = new AffineTransform ();
+ double [] cvec = new double[2];
+ double len = kappa * portion_of_a_quadrant;
+ double angle = curr_begin;
+
+ // in a hypothetical "first quadrant" setting, our first control
+ // vector would be sticking up, from [1,0] to [1,kappa].
+ //
+ // let us recall however that in java2d, y coords are upside down
+ // from what one would consider "normal" first quadrant rules, so we
+ // will *subtract* the y value of this control vector from our first
+ // point.
+
+ cvec[0] = 0;
+ cvec[1] = len;
+ trans.scale (rx, ry);
+ trans.rotate (angle);
+ trans.transform(cvec, 0, cvec, 0, 1);
+ coords[0] = x0 + cvec[0];
+ coords[1] = y0 - cvec[1];
+
+ // control vector #2 would, ideally, be sticking out and to the
+ // right, in a first quadrant arc segment. again, subtraction of y.
+
+ cvec[0] = 0;
+ cvec[1] = -len;
+ trans.rotate (curr_extent);
+ trans.transform(cvec, 0, cvec, 0, 1);
+ coords[2] = x1 + cvec[0];
+ coords[3] = y1 - cvec[1];
+
+ // end point
+ coords[4] = x1;
+ coords[5] = y1;
+
if (xform != null)
xform.transform(coords, 0, coords, 0, 3);
+
return SEG_CUBICTO;
}
} // class ArcIterator
raster.createWritableChild(x, y, w, h, x, y,
null // same bands
);
-
- // Refer to ComponentDataBlitOp for optimized data blitting:
- ComponentDataBlitOp.INSTANCE.filter(src, dest);
+ if (src.getSampleModel () instanceof ComponentSampleModel
+ && dest.getSampleModel () instanceof ComponentSampleModel)
+ // Refer to ComponentDataBlitOp for optimized data blitting:
+ ComponentDataBlitOp.INSTANCE.filter(src, dest);
+ else
+ {
+ // slower path
+ int samples[] = src.getPixels (x, y, w, h, (int [])null);
+ dest.setPixels (x, y, w, h, samples);
+ }
return dest;
}
raster.createWritableChild(x, y, w, h, x, y,
null // same bands
);
-
- // Refer to ComponentDataBlitOp for optimized data blitting:
- ComponentDataBlitOp.INSTANCE.filter(src, dest);
+
+ if (src.getSampleModel () instanceof ComponentSampleModel
+ && dest.getSampleModel () instanceof ComponentSampleModel)
+
+ // Refer to ComponentDataBlitOp for optimized data blitting:
+ ComponentDataBlitOp.INSTANCE.filter(src, dest);
+ else
+ {
+ // slower path
+ int samples[] = src.getPixels (x, y, w, h, (int [])null);
+ dest.setPixels (x, y, w, h, samples);
+ }
}
public void setRGB(int x, int y, int argb)
projects / platform / upstream / linaro-gcc.git / commitdiff