/// 三角形描画
public void DrawTriangle(GraphicsContext graphics, GeometryTriangle trgTri, Camera cam, Rgba color)
{
if (debShader == null)
{
return;
}
/// バーテクスの更新
///------------------------------------------------------------
for (int i = 0; i < 3; i++)
{
debMesh.Positions[i * 3 + 0] = trgTri.GetPos(i).X;
debMesh.Positions[i * 3 + 1] = trgTri.GetPos(i).Y;
debMesh.Positions[i * 3 + 2] = trgTri.GetPos(i).Z;
debMesh.Normals[i * 3 + 0] = trgTri.Plane.Nor.X;
debMesh.Normals[i * 3 + 1] = trgTri.Plane.Nor.Y;
debMesh.Normals[i * 3 + 2] = trgTri.Plane.Nor.Z;
}
debVb.SetVertices(0, debMesh.Positions);
debVb.SetIndices(debMesh.Indices);
drawMesh(graphics, cam, color);
}
/// 点と三角形の３辺との最近接点を算出
static private float getClosestPtPosTriangle(Vector3 trgPos, GeometryTriangle trgTri, ref Vector3 cPos)
{
float isDis, bestDis;
Vector3 crosePos = new Vector3(0, 0, 0);
bestDis = 0.0f;
for (int i = 0; i < 3; i++)
{
isDis = getClosestPtPosLine(trgPos, trgTri.GetPos(i), trgTri.GetPos((i + 1) % 3), ref crosePos);
/// 最近接点を更新
if (i == 0 || isDis < bestDis)
{
bestDis = isDis;
cPos = crosePos;
}
}
return(bestDis);
}
/// 点と三角形の３辺との最近接点を算出
private static float getClosestPtPosTriangle( Vector3 trgPos, GeometryTriangle trgTri, ref Vector3 cPos )
{
float isDis, bestDis;
Vector3 crosePos = new Vector3(0,0,0);
bestDis = 0.0f;
for( int i=0; i<3; i++ ){
isDis = getClosestPtPosLine( trgPos, trgTri.GetPos(i), trgTri.GetPos((i+1)%3), ref crosePos );
/// 最近接点を更新
if( i == 0 || isDis < bestDis ){
bestDis = isDis;
cPos = crosePos;
}
}
return bestDis;
}
/// 三角形描画
public void DrawTriangle( GraphicsContext graphics, GeometryTriangle trgTri, Camera cam, Rgba color )
{
if( debShader == null ){
return ;
}
/// バーテクスの更新
///------------------------------------------------------------
for( int i=0; i<3; i++ ){
debMesh.Positions[ i*3+0 ] = trgTri.GetPos(i).X;
debMesh.Positions[ i*3+1 ] = trgTri.GetPos(i).Y;
debMesh.Positions[ i*3+2 ] = trgTri.GetPos(i).Z;
debMesh.Normals[ i*3+0 ] = trgTri.Plane.Nor.X;
debMesh.Normals[ i*3+1 ] = trgTri.Plane.Nor.Y;
debMesh.Normals[ i*3+2 ] = trgTri.Plane.Nor.Z;
}
debVb.SetVertices( 0, debMesh.Positions );
debVb.SetIndices( debMesh.Indices );
drawMesh( graphics, cam, color );
}