//---------------------------------------------------------------------------
void OGLGeo::heightmap2(HeightMap &map_in)
{
//高さ地図の描画その２．ポリゴンを使う
PFacet facet1,facet2;
Vertex p00,p01,p10,p11;
double x0,y0,x1,y1;
for(int j=0;j<map_in.mesh_j-1;j++)
{
for(int i=0;i<map_in.mesh_i-1;i++)
{
x0=map_in.itox(i);
x1=map_in.itox(i+1);
y0=map_in.jtoy(j);
y1=map_in.jtoy(j+1);
p00.x=x0;
p00.y=y0;
p01.x=x0;
p01.y=y1;
p10.x=x1;
p10.y=y0;
p11.x=x1;
p11.y=y1;
if(
(map_in.read(&p00.z,i,j))&&
(map_in.read(&p10.z,i+1,j))&&
(map_in.read(&p01.z,i,j+1))
)
{
facet1.a=p00;
facet1.b=p10;
facet1.c=p01;
facet1.abgd();
pfacet(facet1);
}
if(
(map_in.read(&p10.z,i+1,j))&&
(map_in.read(&p11.z,i+1,j+1))&&
(map_in.read(&p01.z,i,j+1))
)
{
facet2.a=p10;
facet2.b=p11;
facet2.c=p01;
facet2.abgd();
pfacet(facet2);
}
}
}
}
//---------------------------------------------------------------------------
void OGLGeo::heightmap2a(HeightMap &map_in, double rangeH, double rangeL)
{
//高さ地図の描画その２A．ポリゴンを使う
//高さによって色を変える
PFacet facet1,facet2;
Vertex p00,p01,p10,p11;
double x0,y0,x1,y1;
double h_ratio;
for(int j=0;j<map_in.mesh_j-1;j++)
{
for(int i=0;i<map_in.mesh_i-1;i++)
{
x0=map_in.itox(i);
x1=map_in.itox(i+1);
y0=map_in.jtoy(j);
y1=map_in.jtoy(j+1);
p00.x=x0;
p00.y=y0;
p01.x=x0;
p01.y=y1;
p10.x=x1;
p10.y=y0;
p11.x=x1;
p11.y=y1;
if(
(map_in.read(&p00.z,i,j))&&
(map_in.read(&p10.z,i+1,j))&&
(map_in.read(&p01.z,i,j+1))
)
{
facet1.a=p00;
facet1.b=p10;
facet1.c=p01;
facet1.abgd();
h_ratio=(facet1.a.z-rangeL)/(rangeH-rangeL);
if(h_ratio>1)h_ratio=1;
if(h_ratio<0)h_ratio=0;
// set_material(0,h_ratio,0,1);
GL_set_material(1-h_ratio,h_ratio,1-h_ratio,1);
pfacet(facet1);
}
if(
(map_in.read(&p10.z,i+1,j))&&
(map_in.read(&p11.z,i+1,j+1))&&
(map_in.read(&p01.z,i,j+1))
)
{
facet2.a=p10;
facet2.b=p11;
facet2.c=p01;
facet2.abgd();
h_ratio=(facet1.a.z-rangeL)/(rangeH-rangeL);
if(h_ratio>1)h_ratio=1;
if(h_ratio<0)h_ratio=0;
GL_set_material(1-h_ratio,h_ratio,1-h_ratio,1);
pfacet(facet2);
}
}
}
}