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-rw-r--r--graphics/epix/samples/levelset3.xp89
1 files changed, 0 insertions, 89 deletions
diff --git a/graphics/epix/samples/levelset3.xp b/graphics/epix/samples/levelset3.xp
deleted file mode 100644
index aab13bec4f..0000000000
--- a/graphics/epix/samples/levelset3.xp
+++ /dev/null
@@ -1,89 +0,0 @@
-/* -*-ePiX-*- */
-#include "epix.h"
-using namespace ePiX;
-
-// Style parameters
-const int MESH(12); // number of coordinate grid squares
-const int MAX(3); // maximum coordinate
-
-// camera location (in spherical coordinates); must be in first orthant
-const P VIEWPT(sph(4*MAX, M_PI/6, M_PI/6));
-
-const double sqrt3(sqrt(3));
-
-// function to be graphed
-P f(double x, double y)
-{
- // return P(x, y, 0.75*y*(y-sqrt3*x)*(y+sqrt3*x));
- return P(x,y, 0.9*MAX*exp(-0.5*(x*x+y*y))*x*y);
- // return P(x, y, 0.25*(x-y*y)*(x-3*y*y));
-}
-
-P color(double u, double v, double w)
-{
- return P(-0.5*w, 0.25*w, 0.5*w);
-}
-
-Color Bk(Green(0.7));
-
-int main()
-{
- // picture(P(-2*MAX,-2*MAX), P(2*MAX,2*MAX), "6 x 6in");
- picture(P(-MAX,-MAX), P(MAX,MAX), "6 x 6in");
-
- begin();
- backing(Bk);
-
- camera.at(0,-10,4);
-
- border(Green(0.6), "1pt");
-
- clip_box(P(MAX,MAX,MAX));
-
- domain R(P(-MAX,-MAX), P(MAX, MAX), (6*MESH, 6*MESH), mesh(6*MESH, 6*MESH));
-
- legend L1, L2, L3;
- L1.backing(Bk);
- L2.backing(Bk);
- L3.backing(Bk);
-
- // pen(RGB(1, 0.8, 0.2), 0.1);
- for (int i=-10; i <=10; ++i)
- {
- clip_slice(P(0,0,0.1*i), P(0,0,1), 0.1);
- // fill(RGB(0.25+0.1*i, 0, -0.1*i));
- rgb(0.25+0.1*i, 0, -0.1*i);
-
- std::stringstream buf;
- buf << "$" << 0.1*i - 0.05
- << "\\leq z \\leq " << 0.1*i + 0.05 << "$";
-
- if (i <-3)
- L1.fill_item(buf.str());
-
- else if(i<4)
- L2.fill_item(buf.str());
-
- else
- L3.fill_item(buf.str());
-
- nofill();
- surface(f, R);
- clip_restore();
- }
-
- camera.at(0,0,1000);
- font_size("scriptsize");
- label_color(Black());
- L1.border(0);
- L2.border(0);
- L3.border(0);
-
- L1.draw(canvas().bl(), P(2,2), tr);
- L2.draw(canvas().bl()+P(2,0), P(2,2), tr);
- L3.draw(canvas().bl()+P(4,0), P(2,2), tr);
-
- pst_format();
- end();
-}
-