/** This method saves all loaded materials to a .mtl file. */
public void saveMaterials(String filePath) {
try {
BufferedWriter fout = new BufferedWriter(new FileWriter(filePath /*+".mtl"*/));
MaterialCell mat[];
mat = this.materials;
for (int i = 1;
i < mat.length;
i++) // make i intialized to 1 if you want to avoid saving default material
{
fout.write("newmtl " + mat[i].materialName + "\n");
fout.write("Ka " + mat[i].ka.toString() + "\n");
fout.write("Kd " + mat[i].kd.toString() + "\n");
fout.write("Ks " + mat[i].ks.toString() + "\n");
if (!(mat[i].emmColor.r == 0.0 && mat[i].emmColor.g == 0.0 && mat[i].emmColor.b == 0.0))
fout.write("e " + mat[i].emmColor.toString() + "\n");
// e - emitted color
fout.write("Ns " + (mat[i].shiny) + "\n");
// Ns - shininess (0-128) Phong cos exponent in OpenGL form
fout.write("Ni " + mat[i].refractiveIndex + "\n");
// Ni - index of refraction
fout.write("Lc " + mat[i].lineColor.toString() + "\n");
// Lc - line color
if (!(mat[i].transmissionFilter.r == 0.0
&& mat[i].transmissionFilter.g == 0.0
&& mat[i].transmissionFilter.b == 0.0))
fout.write("Tf " + mat[i].transmissionFilter.toString() + "\n");
// Tf - transmission filter - selects color of light transmitted
if (!(mat[i].reflectivity.r == 0.0
&& mat[i].reflectivity.g == 0.0
&& mat[i].reflectivity.b == 0.0))
fout.write("Ir " + mat[i].reflectivity.toString() + "\n");
// Ir- intensity of reflected ray
if (!(mat[i].refractivity.r == 0.0
&& mat[i].refractivity.g == 0.0
&& mat[i].refractivity.b == 0.0))
fout.write("It " + mat[i].refractivity.toString() + "\n");
// It - intensity of transmitted (refracted) ray
fout.write("\n");
}
fout.close();
} catch (IOException ex) {
System.out.println("Could not open file for material output, operation terminated");
ex.printStackTrace();
}
}
/**
* @param String - the name of the file
* @param String - the name of the file (without the path but with the extension) containing the
* materials used by the mesh
*/
public boolean save(String filename) {
PMesh.SurfCell surf = this.surfHead;
PMesh.PolyCell poly;
PMesh.VertListCell vList;
try {
int i;
BufferedWriter fout = new BufferedWriter(new FileWriter(filename));
fout.write("#PMesh data structure needs modification to remember group name\n");
fout.write("mtllib " + mtlFileName + "\n");
for (i = 0; i < vertArray.size(); i++) {
fout.write(
"v "
+ vertArray.get(i).worldPos.x
+ " "
+ vertArray.get(i).worldPos.y
+ " "
+ vertArray.get(i).worldPos.z
+ "\n");
}
fout.write("# " + i + " vertices" + "\n");
fout.write("\n");
i = 0;
while (surf != null) {
poly = surf.polyHead;
fout.write("g surface" + i + "\n");
fout.write("usemtl " + materials[surf.material].materialName + "\n");
while (poly != null) {
vList = poly.vert;
fout.write("f ");
while (vList != null) {
fout.write((vList.vert + 1) + " ");
vList = vList.next;
}
fout.write("\n");
poly = poly.next;
}
surf = surf.next;
i++;
}
fout.close();
return true;
} // end try block
catch (java.io.IOException ev) {
System.out.println("Could not open file for output, operation terminated");
return false;
} // end catch
} // end method save
