/*
* Copyright (c) 2011 Hypertriton, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Construction geometry: Circle.
*/
#include
#include
#include
#include
SG_Circle *
SG_CircleNew(void *parent, const char *name, const M_Circle3 *mc)
{
SG_Circle *c;
c = Malloc(sizeof(SG_Circle));
AG_ObjectInitNamed(c, &sgCircleClass, name);
AG_ObjectAttach(parent, c);
if (mc != NULL) {
SG_Translatev(c, mc->p);
SG_Scale(c, mc->r);
}
return (c);
}
static void
Draw(void *_Nonnull obj, SG_View *_Nonnull view)
{
SG_Circle *c = obj;
SG_Geom *geom = SGGEOM(c);
const int nEdges = 10; /* XXX */
int i;
SG_GeomDrawBegin(geom);
GL_Begin(GL_LINE_LOOP);
GL_Color4v(&geom->c);
for (i = 0; i < nEdges; i++) {
GL_Vertex2(Cos((2.0*M_PI*i)/nEdges),
Sin((2.0*M_PI*i)/nEdges));
}
GL_End();
SG_GeomDrawEnd(geom);
}
SG_NodeClass sgCircleClass = {
{
"SG_Node:SG_Geom:SG_Circle",
sizeof(SG_Circle),
{ 0,0 },
NULL, /* init */
NULL, /* free */
NULL, /* destroy */
NULL, /* load */
NULL, /* save */
SG_NodeEdit
},
NULL, /* menuInstance */
NULL, /* menuClass */
Draw,
NULL, /* intersect */
NULL /* edit */
};