-
- du = ctx->Eval.MapGrid2du;
- dv = ctx->Eval.MapGrid2dv;
- v1 = ctx->Eval.MapGrid2v1 + j1 * dv;
- u1 = ctx->Eval.MapGrid2u1 + i1 * du;
-
- switch (mode) {
- case GL_POINT:
- CALL_Begin(GET_DISPATCH(), (GL_POINTS));
- for (v=v1,j=j1;j<=j2;j++,v+=dv) {
- for (u=u1,i=i1;i<=i2;i++,u+=du) {
- CALL_EvalCoord2f(GET_DISPATCH(), (u, v));
- }
- }
- CALL_End(GET_DISPATCH(), ());
- break;
- case GL_LINE:
- for (v=v1,j=j1;j<=j2;j++,v+=dv) {
- CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP));
- for (u=u1,i=i1;i<=i2;i++,u+=du) {
- CALL_EvalCoord2f(GET_DISPATCH(), (u, v));
- }
- CALL_End(GET_DISPATCH(), ());
- }
- for (u=u1,i=i1;i<=i2;i++,u+=du) {
- CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP));
- for (v=v1,j=j1;j<=j2;j++,v+=dv) {
- CALL_EvalCoord2f(GET_DISPATCH(), (u, v));
- }
- CALL_End(GET_DISPATCH(), ());
- }
- break;
- case GL_FILL:
- for (v=v1,j=j1;j<j2;j++,v+=dv) {
- CALL_Begin(GET_DISPATCH(), (GL_TRIANGLE_STRIP));
- for (u=u1,i=i1;i<=i2;i++,u+=du) {
- CALL_EvalCoord2f(GET_DISPATCH(), (u, v));
- CALL_EvalCoord2f(GET_DISPATCH(), (u, v+dv));
- }
- CALL_End(GET_DISPATCH(), ());
- }
- break;