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Improved junction points of vector lines

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- and fixed size of vector points
This commit is contained in:
ImJezze 2016-03-23 22:37:45 +01:00
parent 7e2bedbc76
commit bfd9275427
1 changed files with 24 additions and 7 deletions
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31
src/emu/video/vector.cpp
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@ -350,14 +350,31 @@ UINT32 vector_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap,
coords.x1 = ((float)curpoint->x - xoffs) * xscale;
coords.y1 = ((float)curpoint->y - yoffs) * yscale;
// extend zero-length vector line (vector point) by quarter beam_width on both sides
if (fabs(coords.x0 - coords.x1) < FLT_EPSILON &&
fabs(coords.y0 - coords.y1) < FLT_EPSILON)
float xdistance = coords.x0 - coords.x1;
float ydistance = coords.y0 - coords.y1;
// extend zero-length vector line (vector point) by 3/8 beam_width on both sides
if (fabs(xdistance) < FLT_EPSILON &&
fabs(ydistance) < FLT_EPSILON)
{
coords.x0 += xratio * beam_width * 0.25f;
coords.y0 += yratio * beam_width * 0.25f;
coords.x1 -= xratio * beam_width * 0.25f;
coords.y1 -= yratio * beam_width * 0.25f;
coords.x0 += xratio * beam_width * 0.375f;
coords.y0 += yratio * beam_width * 0.375f;
coords.x1 -= xratio * beam_width * 0.375f;
coords.y1 -= yratio * beam_width * 0.375f;
}
// extend vector line by 3/8 beam_width on both sides
else
{
xdistance *= xratio;
ydistance *= yratio;
float length = sqrt(xdistance * xdistance + ydistance * ydistance);
float xdirection = xdistance / length;
float ydirection = ydistance / length;
coords.x0 += xratio * beam_width * 0.375f * xdirection;
coords.y0 += yratio * beam_width * 0.375f * ydirection;
coords.x1 -= xratio * beam_width * 0.375f * xdirection;
coords.y1 -= yratio * beam_width * 0.375f * ydirection;
}
if (curpoint->intensity != 0 && !render_clip_line(&coords, &clip))