void CFeature::CalculateTransform()
{
updir = (!def->upright)? ground->GetNormal(pos.x, pos.z): UpVector;
frontdir = GetVectorFromHeading(heading);
rightdir = (frontdir.cross(updir)).Normalize();
frontdir = (updir.cross(rightdir)).Normalize();
transMatrix = CMatrix44f(pos, -rightdir, updir, frontdir);
}
void CFeature::ForcedSpin(const float3& newDir)
{
float3 updir = UpVector;
if (updir == newDir) {
//FIXME perhaps save the old right,up,front directions, so we can
// reconstruct the old upvector and generate a better assumption for updir
updir -= GetVectorFromHeading(heading);
}
float3 rightdir = newDir.cross(updir).Normalize();
updir = rightdir.cross(newDir);
transMatrix = CMatrix44f(pos, -rightdir, updir, newDir);
heading = GetHeadingFromVector(newDir.x, newDir.z);
}
CMatrix44f CProjectile::GetTransformMatrix(bool offsetPos) const {
float3 xdir;
float3 ydir;
if (math::fabs(dir.y) < 0.95f) {
xdir = dir.cross(UpVector);
xdir.SafeANormalize();
} else {
xdir.x = 1.0f;
}
ydir = xdir.cross(dir);
return (CMatrix44f(drawPos + (dir * radius * 0.9f * offsetPos), -xdir, ydir, dir));
}
void CFeature::CalculateTransform ()
{
float3 frontDir=GetVectorFromHeading(heading);
float3 upDir;
if (def->upright) upDir = float3(0.0f,1.0f,0.0f);
else upDir = ground->GetNormal(pos.x,pos.z);
float3 rightDir=frontDir.cross(upDir);
rightDir.Normalize();
frontDir=upDir.cross(rightDir);
frontDir.Normalize ();
transMatrix = CMatrix44f (pos,-rightDir,upDir,frontDir);
}
void CFeature::ForcedSpin(const float3& newDir)
{
/*
heading = GetHeadingFromVector(newDir.x, newDir.z);
CalculateTransform();
if (def->drawType >= DRAWTYPE_TREE) {
treeDrawer->DeleteTree(pos);
treeDrawer->AddTree(def->drawType - 1, pos, 1.0f);
}
*/
float3 updir = UpVector;
if (updir == newDir) {
//FIXME perhaps save the old right,up,front directions, so we can
// reconstruct the old upvector and generate a better assumption for updir
updir -= GetVectorFromHeading(heading);
}
float3 rightdir = newDir.cross(updir).Normalize();
updir = rightdir.cross(newDir);
transMatrix = CMatrix44f(pos, -rightdir, updir, newDir);
heading = GetHeadingFromVector(newDir.x, newDir.z);
}
void CAssParser::LoadPieceTransformations(
SAssPiece* piece,
const S3DModel* model,
const aiNode* pieceNode,
const LuaTable& pieceTable
) {
aiVector3D aiScaleVec, aiTransVec;
aiQuaternion aiRotateQuat;
// process transforms
pieceNode->mTransformation.Decompose(aiScaleVec, aiRotateQuat, aiTransVec);
// metadata-scaling
piece->scales = pieceTable.GetFloat3("scale", aiVectorToFloat3(aiScaleVec));
piece->scales.x = pieceTable.GetFloat("scalex", piece->scales.x);
piece->scales.y = pieceTable.GetFloat("scaley", piece->scales.y);
piece->scales.z = pieceTable.GetFloat("scalez", piece->scales.z);
if (piece->scales.x != piece->scales.y || piece->scales.y != piece->scales.z) {
// LOG_SL(LOG_SECTION_MODEL, L_WARNING, "Spring doesn't support non-uniform scaling");
piece->scales.y = piece->scales.x;
piece->scales.z = piece->scales.x;
}
// metadata-translation
piece->offset = pieceTable.GetFloat3("offset", aiVectorToFloat3(aiTransVec));
piece->offset.x = pieceTable.GetFloat("offsetx", piece->offset.x);
piece->offset.y = pieceTable.GetFloat("offsety", piece->offset.y);
piece->offset.z = pieceTable.GetFloat("offsetz", piece->offset.z);
// metadata-rotation
// NOTE:
// these rotations are "pre-scripting" but "post-modelling"
// together with the (baked) aiRotateQuad they determine the
// model's pose *before* any animations execute
//
// float3 rotAngles = pieceTable.GetFloat3("rotate", aiQuaternionToRadianAngles(aiRotateQuat) * RADTODEG);
float3 pieceRotAngles = pieceTable.GetFloat3("rotate", ZeroVector);
pieceRotAngles.x = pieceTable.GetFloat("rotatex", pieceRotAngles.x);
pieceRotAngles.y = pieceTable.GetFloat("rotatey", pieceRotAngles.y);
pieceRotAngles.z = pieceTable.GetFloat("rotatez", pieceRotAngles.z);
pieceRotAngles *= DEGTORAD;
LOG_SL(LOG_SECTION_PIECE, L_INFO,
"(%d:%s) Assimp offset (%f,%f,%f), rotate (%f,%f,%f,%f), scale (%f,%f,%f)",
model->numPieces, piece->name.c_str(),
aiTransVec.x, aiTransVec.y, aiTransVec.z,
aiRotateQuat.w, aiRotateQuat.x, aiRotateQuat.y, aiRotateQuat.z,
aiScaleVec.x, aiScaleVec.y, aiScaleVec.z
);
LOG_SL(LOG_SECTION_PIECE, L_INFO,
"(%d:%s) Relative offset (%f,%f,%f), rotate (%f,%f,%f), scale (%f,%f,%f)",
model->numPieces, piece->name.c_str(),
piece->offset.x, piece->offset.y, piece->offset.z,
pieceRotAngles.x, pieceRotAngles.y, pieceRotAngles.z,
piece->scales.x, piece->scales.y, piece->scales.z
);
// NOTE:
// at least collada (.dae) files generated by Blender represent
// a coordinate-system that differs from the "standard" formats
// (3DO, S3O, ...) for which existing tools at least have prior
// knowledge of Spring's expectations --> let the user override
// the ROOT rotational transform and the rotation-axis mapping
// used by animation scripts (but re-modelling/re-exporting is
// always preferred!) even though AssImp should convert models
// to its own system which matches that of Spring
//
// .dae : x=Rgt, y=-Fwd, z= Up, as=(-1, -1, 1), am=AXIS_XZY (if Z_UP)
// .dae : x=Rgt, y=-Fwd, z= Up, as=(-1, -1, 1), am=AXIS_XZY (if Y_UP) [!?]
// .blend: ????
piece->bakedRotMatrix = aiMatrixToMatrix(aiMatrix4x4t<float>(aiRotateQuat.GetMatrix()));
if (piece == model->GetRootPiece()) {
const float3 xaxis = pieceTable.GetFloat3("xaxis", piece->bakedRotMatrix.GetX());
const float3 yaxis = pieceTable.GetFloat3("yaxis", piece->bakedRotMatrix.GetY());
const float3 zaxis = pieceTable.GetFloat3("zaxis", piece->bakedRotMatrix.GetZ());
if (math::fabs(xaxis.SqLength() - yaxis.SqLength()) < 0.01f && math::fabs(yaxis.SqLength() - zaxis.SqLength()) < 0.01f) {
piece->bakedRotMatrix = CMatrix44f(ZeroVector, xaxis, yaxis, zaxis);
}
}
piece->rotAxisSigns = pieceTable.GetFloat3("rotAxisSigns", float3(-OnesVector));
piece->axisMapType = AxisMappingType(pieceTable.GetInt("rotAxisMap", AXIS_MAPPING_XYZ));
// construct 'baked' part of the piece-space matrix
// AssImp order is translate * rotate * scale * v;
// we leave the translation and scale parts out and
// put those in <offset> and <scales> --> transform
// is just R instead of T * R * S
//
// note: for all non-AssImp models this is identity!
//
piece->ComposeRotation(piece->bakedRotMatrix, pieceRotAngles);
piece->SetHasIdentityRotation(piece->bakedRotMatrix.IsIdentity() == 0);
assert(piece->bakedRotMatrix.IsOrthoNormal() == 0);
}
static CMatrix44f ComposeScaleMatrix(const float4 scales)
{
// note: T is z-bias, scales.z is z-near
return (CMatrix44f(FwdVector * 0.5f, RgtVector / scales.x, UpVector / scales.y, FwdVector / scales.w));
}