private PPolygonPolygonCollider.PWContactedVertex [] GetEdgeOfPotentialCollision(
PConvexPolygonShape p1, PConvexPolygonShape p2, int r1edge,
bool flip)
{
PPolygonPolygonCollider.PWContactedVertex [] line = new PPolygonPolygonCollider.PWContactedVertex [2];
Vector2f normal = p1.nors[r1edge];
float dist = 1.0F;
int ver = -1;
int nextVer = -1;
for (int i = 0; i < p2.numVertices; i++)
{
float dot = normal.Dot(p2.nors[i]);
if (dot < dist || dist == 1.0F)
{
dist = dot;
ver = i;
nextVer = (i + 1) % p2.numVertices;
}
}
line[0] = new PPolygonPolygonCollider.PWContactedVertex();
line[0].v.Set(p2.vers[ver].x, p2.vers[ver].y);
line[0].data.Set(r1edge + ver * 2 + ver * 4, false);
line[1] = new PPolygonPolygonCollider.PWContactedVertex();
line[1].v.Set(p2.vers[nextVer].x, p2.vers[nextVer].y);
line[1].data.Set(r1edge + ver * 2 + nextVer * 4, false);
return(line);
}
public virtual PPolygonPolygonCollider.PWContactedVertex Clone()
{
PPolygonPolygonCollider.PWContactedVertex cv = new PPolygonPolygonCollider.PWContactedVertex();
cv.v = v.Clone();
cv.data = data.Clone();
return(cv);
}
private PPolygonPolygonCollider.PWContactedVertex [] ClipEdge(PPolygonPolygonCollider.PWContactedVertex [] clips,
Vector2f normal, float dist) {
PPolygonPolygonCollider.PWContactedVertex [] line = new PPolygonPolygonCollider.PWContactedVertex [2];
int numClips = 0;
float dist0 = normal.Dot(clips[0].v) - dist;
float dist1 = normal.Dot(clips[1].v) - dist;
if (dist0 < 0.0F) {
line[numClips] = clips[0];
numClips++;
}
if (dist1 < 0.0F) {
line[numClips] = clips[1];
numClips++;
}
if (numClips == 0)
return null;
if (numClips == 2)
return line;
int c = 0;
if (dist0 < 0.0F && dist1 > 0.0F)
c = 1;
float d = dist0 / (dist0 - dist1);
line[1] = new PPolygonPolygonCollider.PWContactedVertex ();
line[1].v = clips[1].v.Sub(clips[0].v).Clone();
line[1].v.MulLocal(d);
line[1].v.AddLocal(clips[0].v);
line[1].data = clips[c].data;
return line;
}
private PPolygonPolygonCollider.PWContactedVertex [] ClipEdge(PPolygonPolygonCollider.PWContactedVertex [] clips,
Vector2f normal, float dist)
{
PPolygonPolygonCollider.PWContactedVertex [] line = new PPolygonPolygonCollider.PWContactedVertex [2];
int numClips = 0;
float dist0 = normal.Dot(clips[0].v) - dist;
float dist1 = normal.Dot(clips[1].v) - dist;
if (dist0 < 0.0F)
{
line[numClips] = clips[0];
numClips++;
}
if (dist1 < 0.0F)
{
line[numClips] = clips[1];
numClips++;
}
if (numClips == 0)
{
return(null);
}
if (numClips == 2)
{
return(line);
}
int c = 0;
if (dist0 < 0.0F && dist1 > 0.0F)
{
c = 1;
}
float d = dist0 / (dist0 - dist1);
line[1] = new PPolygonPolygonCollider.PWContactedVertex();
line[1].v = clips[1].v.Sub(clips[0].v).Clone();
line[1].v.MulLocal(d);
line[1].v.AddLocal(clips[0].v);
line[1].data = clips[c].data;
return(line);
}
private PPolygonPolygonCollider.PWContactedVertex [] GetEdgeOfPotentialCollision(
PConvexPolygonShape p1, PConvexPolygonShape p2, int r1edge,
bool flip) {
PPolygonPolygonCollider.PWContactedVertex [] line = new PPolygonPolygonCollider.PWContactedVertex [2];
Vector2f normal = p1.nors[r1edge];
float dist = 1.0F;
int ver = -1;
int nextVer = -1;
for (int i = 0; i < p2.numVertices; i++) {
float dot = normal.Dot(p2.nors[i]);
if (dot < dist || dist == 1.0F) {
dist = dot;
ver = i;
nextVer = (i + 1) % p2.numVertices;
}
}
line[0] = new PPolygonPolygonCollider.PWContactedVertex ();
line[0].v.Set(p2.vers[ver].x, p2.vers[ver].y);
line[0].data.Set(r1edge + ver * 2 + ver * 4, false);
line[1] = new PPolygonPolygonCollider.PWContactedVertex ();
line[1].v.Set(p2.vers[nextVer].x, p2.vers[nextVer].y);
line[1].data.Set(r1edge + ver * 2 + nextVer * 4, false);
return line;
}
public virtual PPolygonPolygonCollider.PWContactedVertex Clone() {
PPolygonPolygonCollider.PWContactedVertex cv = new PPolygonPolygonCollider.PWContactedVertex ();
cv.v = v.Clone();
cv.data = data.Clone();
return cv;
}