1 #include <msp/strings/format.h>
7 #include "programdata.h"
12 ClipPlane::ClipPlane():
16 ClipPlane::ClipPlane(const Vector4 &e):
20 ClipPlane::ClipPlane(const Vector3 &p, const Vector3 &d):
21 eq(compose(d, -dot(p, d)))
24 void ClipPlane::update(unsigned index) const
27 for(unsigned i=0; i<4; ++i)
29 glClipPlane(GL_CLIP_PLANE0+index, deq);
32 void ClipPlane::set_equation(const Vector4 &e)
35 if(ClipUnit *unit = ClipUnit::find_unit(this))
36 update(unit->get_index());
39 void ClipPlane::set_plane(const Vector3 &p, const Vector3 &d)
41 Vector3 nd = normalize(d);
42 set_equation(compose(nd, -dot(p, nd)));
45 void ClipPlane::update_shader_data(ProgramData &shdata, const Matrix &view_inverse, unsigned i) const
47 shdata.uniform(format("clip_planes[%d].equation", i), eq*view_inverse);
50 void ClipPlane::bind_to(unsigned i) const
52 ClipUnit &unit = ClipUnit::get_unit(i);
53 if(unit.set_plane(this))
55 enable(GL_CLIP_PLANE0+unit.get_index());
56 update(unit.get_index());
60 void ClipPlane::unbind_from(unsigned i)
62 ClipUnit &unit = ClipUnit::get_unit(i);
64 disable(GL_CLIP_PLANE0+unit.get_index());