void filter_values::calculate (type type, float freq, float res, float srate)
{
/* Adapt the values to avoid strange noise */
freq = tMax(freq, 0.01f);
res = tMax(res, 0.01f);
m_type = type;
m_freq = freq;
m_res = res;
m_srate = srate;
calculate();
}
//----------------------------------------------------------------------------
// Reset the texture coordinates after a split.
//
void ITR3DMImport::normalizeTexture(Poly* poly)
{
Point2F tMin(+1.0E20f,+1.0E20f);
Point2F tMax(-1.0E20f,-1.0E20f);
for (int i = 0; i < poly->vertexList.size(); i++) {
Point2F& tv = poly->vertexList[i].texture;
tv.x += poly->textureOffset.x;
tv.y += poly->textureOffset.y;
tMin.setMin(tv);
tMax.setMax(tv);
}
tMin.x = floor(tMin.x); tMin.y = floor(tMin.y);
tMax.x = ceil(tMax.x); tMax.y = ceil(tMax.y);
// Mask onto power of 2 bitmap size.
Point2I offset;
offset.x = int(tMin.x) & MaxTextureMask;
offset.y = int(tMin.y) & MaxTextureMask;
// Adjust offset to multiple of 8 to avoid
// mipmap jumping.
poly->textureOffset.x = offset.x & ~0x7;
poly->textureOffset.y = offset.y & ~0x7;
tMin.x -= float(offset.x & 0x7);
tMin.y -= float(offset.y & 0x7);
poly->textureSize.x = int(tMax.x - tMin.x);
poly->textureSize.y = int(tMax.y - tMin.y);
for (int v = 0; v < poly->vertexList.size(); v++)
poly->vertexList[v].texture -= tMin;
}
void filter_values::calculate (float freq)
{
freq = tMax(freq, 0.01f);
m_freq = freq;
calculate();
}
void ITR3DMImport::boxMap(Poly* poly)
{
Point2F tMin(+1.0E20f,+1.0E20f);
Point2F tMax(-1.0E20f,-1.0E20f);
// Select box mapping
if (fabs(poly->plane.x) > fabs(poly->plane.y))
poly->boxMapping =
(fabs(poly->plane.x) > fabs(poly->plane.z))? MapYZ: MapXY;
else
poly->boxMapping =
(fabs(poly->plane.y) > fabs(poly->plane.z))? MapXZ: MapXY;
// Map vertices to box face.
for (int i = 0; i < poly->vertexList.size(); i++) {
Point3F& tp = poly->vertexList[i].point;
Point2F& tv = poly->vertexList[i].texture;
switch(poly->boxMapping) {
case MapYZ:
tv.set(tp.y,-tp.z);
break;
case MapXY:
tv.set(tp.x,-tp.y);
break;
case MapXZ:
tv.set(tp.x,-tp.z);
break;
}
tv *= textureScale;
tMin.setMin(tv);
tMax.setMax(tv);
}
// Min/Max must be whole numbers
tMin.x = floor(tMin.x); tMin.y = floor(tMin.y);
tMax.x = ceil(tMax.x); tMax.y = ceil(tMax.y);
poly->textureSize.x = int(tMax.x - tMin.x);
poly->textureSize.y = int(tMax.y - tMin.y);
//
poly->textureOffset.x = int(tMin.x) & MaxTextureMask;
poly->textureOffset.y = int(tMin.y) & MaxTextureMask;
// Translate coor. so they fit on the texture.
for (int v = 0; v < poly->vertexList.size(); v++)
poly->vertexList[v].texture -= tMin;
}
