1 #include <msp/gl/extensions/msp_legacy_features.h>
2 #include <msp/strings/format.h>
8 #include "programdata.h"
13 ClipPlane::ClipPlane():
17 ClipPlane::ClipPlane(const Vector4 &e):
21 ClipPlane::ClipPlane(const Vector3 &p, const Vector3 &d):
22 eq(compose(d, -dot(p, d)))
25 void ClipPlane::update(unsigned index) const
28 for(unsigned i=0; i<4; ++i)
30 glClipPlane(GL_CLIP_PLANE0+index, deq);
33 void ClipPlane::set_equation(const Vector4 &e)
36 if(ClipUnit *unit = ClipUnit::find_unit(this))
37 update(unit->get_index());
40 void ClipPlane::set_plane(const Vector3 &p, const Vector3 &d)
42 Vector3 nd = normalize(d);
43 set_equation(compose(nd, -dot(p, nd)));
46 void ClipPlane::update_shader_data(ProgramData &shdata, const Matrix &view_inverse, unsigned i) const
48 shdata.uniform(format("clip_planes[%d].equation", i), eq*view_inverse);
51 void ClipPlane::bind_to(unsigned i) const
53 Require _req(MSP_legacy_features);
55 ClipUnit &unit = ClipUnit::get_unit(i);
56 if(unit.set_plane(this))
58 enable(GL_CLIP_PLANE0+unit.get_index());
59 update(unit.get_index());
63 void ClipPlane::unbind_from(unsigned i)
65 ClipUnit &unit = ClipUnit::get_unit(i);
67 disable(GL_CLIP_PLANE0+unit.get_index());