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root |
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/* |
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* rayshade interface |
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*/ |
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#include "config.h" |
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#include <iostream> |
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#include <algorithm> |
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#include "ray_int.h" |
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ray_int::ray_int (ostream &out) t_no |
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: o(out) |
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{ |
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} |
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ray_int::~ray_int () t_no |
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{ |
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} |
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void ray_int::begin_fig () t_no |
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{ |
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x1 = 1e10; y1 = 1e10; z1 = 1e10; |
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x2 = -1e10; y2 = -1e10; z2 = -1e10; |
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} |
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void ray_int::end_fig () t_no |
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{ |
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x1 -= 0.1; y1 -= 0.1; z1 -= 0.1; |
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x2 += 0.1; y2 += 0.1; z2 += 0.2; |
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} |
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void ray_int::clip (const vec &v) t_no |
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{ |
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if (x1 > v[0]) x1 = v[0]; |
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if (y1 > v[1]) y1 = v[1]; |
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if (z1 > v[2]) z1 = v[2]; |
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if (x2 < v[0]) x2 = v[0]; |
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if (y2 < v[1]) y2 = v[1]; |
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if (z2 < v[2]) z2 = v[2]; |
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} |
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void ray_int::check_attrs (const attribute_set &attr) t_err |
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{ |
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width = attr ("width",1); |
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color = attr ("color", vec( 0.8, 0.8, 0.8)); |
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} |
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#define OV(v) v[0] << " " << v[1] << " " << v[2] |
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void ray_int::segment (const point &a, const point &b) t_err |
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{ |
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check_attrs (a.attr); |
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clip (a.v); |
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clip (b.v); |
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o << "cylinder " << width << " " << OV(a.v) << " " << OV(b.v) << endl; |
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} |
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void ray_int::object (const points &v) t_err |
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{ |
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points p = v; |
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// cerr << "polygon "; for (points::const_iterator j = v.begin (); j != v.end (); j++) cerr << j->first << " "; cerr << endl; |
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if (v.size () < 3) |
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return; |
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if (winding (p) < 0) |
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reverse (p.begin (), p.end ()); |
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check_attrs (p.front ().attr); |
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points::const_iterator a, b, c; |
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c = p.begin (); |
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a = c++; |
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b = c++; |
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clip (a->v); |
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clip (b->v); |
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while (c != p.end ()) |
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{ |
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clip (c->v); |
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o << "triangle " << OV(a->v) << " " << OV(a->n) << endl; |
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o << " " << OV(b->v) << " " << OV(b->n) << endl; |
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o << " " << OV(c->v) << " " << OV(c->n) << endl; |
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++b; ++c; |
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} |
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o << endl; |
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} |
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