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cgal
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Cosmetic: fill cutting plane with a semi-transparent color.

This commit is contained in:
Stéphane Tayeb 2010-02-25 17:37:43 +00:00
parent d206e2aad9
commit 436504fad6
1 changed files with 25 additions and 3 deletions
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28
AABB_tree/demo/AABB_tree/Scene.cpp
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@ -108,6 +108,11 @@ void Scene::update_bbox()
void Scene::draw()
{
if(m_view_plane)
::glEnable(GL_DEPTH_TEST);
else
::glDisable(GL_DEPTH_TEST);
if(m_view_polyhedron)
draw_polyhedron();
@ -293,7 +298,7 @@ void Scene::draw_plane()
double dx = m_bbox.xmax()-m_bbox.xmin();
double dy = m_bbox.ymax()-m_bbox.ymin();
double dz = m_bbox.zmax()-m_bbox.zmin();
double diag = std::sqrt(dx*dx + dy*dy + dz*dz);
float diag = .6f * float(std::sqrt(dx*dx + dy*dy + dz*dz));
::glDisable(GL_LIGHTING);
::glLineWidth(1.0f);
@ -302,7 +307,7 @@ void Scene::draw_plane()
// draw grid
::glPushMatrix();
::glMultMatrixd(m_frame->matrix());
QGLViewer::drawGrid((float)diag*0.6);
QGLViewer::drawGrid(diag);
::glPopMatrix();
// draw cut segments
@ -318,7 +323,24 @@ void Scene::draw_plane()
::glVertex3d(a.x(), a.y(), a.z());
::glVertex3d(b.x(), b.y(), b.z());
}
::glEnd();
::glEnd();
// fill grid with transparent blue
::glPushMatrix();
::glMultMatrixd(m_frame->matrix());
::glColor4f(.6f, .85f, 1.f, .65f);
::glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
::glEnable(GL_BLEND);
::glBegin(GL_QUADS);
::glVertex3d(-diag, -diag, 0.);
::glVertex3d(-diag, diag, 0.);
::glVertex3d( diag, diag, 0.);
::glVertex3d( diag, -diag, 0.);
::glEnd();
::glDisable(GL_BLEND);
::glPopMatrix();
}
FT Scene::random_in(const double a,