forked from 0ad/0ad
129 lines
3.0 KiB
C++
Executable File
129 lines
3.0 KiB
C++
Executable File
/************************************************************
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*
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* File Name: Model.Cpp
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*
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* Description: CModel is a specific instance of a model.
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* It contains a pointer to CModelDef, and
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* includes all instance information, such as
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* current animation pose.
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*
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************************************************************/
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#include "Model.h"
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#include "Quaternion.h"
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CModel::CModel()
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{
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m_pModelDef = NULL;
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m_pBonePoses = NULL;
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}
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CModel::~CModel()
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{
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Destroy();
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}
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bool CModel::InitModel(CModelDef *modeldef)
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{
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m_pModelDef = modeldef;
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m_pBonePoses = new CMatrix3D[m_pModelDef->GetNumBones()];
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ClearPose();
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return true;
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}
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void CModel::Destroy()
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{
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m_pModelDef = NULL;
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if (m_pBonePoses)
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delete [] m_pBonePoses;
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m_pBonePoses = NULL;
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}
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void CModel::SetPose (const char *anim_name, float time)
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{
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int AnimI = -1;
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for (int i=0; i<m_pModelDef->GetNumAnimations(); i++)
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{
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if ( strcmp(anim_name, m_pModelDef->GetAnimations()[i].m_Name) == 0 )
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{
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AnimI = i;
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break;
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}
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}
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if (AnimI == -1)
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return;
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SModelAnimation *pAnim = &m_pModelDef->GetAnimations()[AnimI];
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int StartI = (int)time;
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int EndI;// = (int)(time + 0.999999f);
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if ((float)StartI == time)
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EndI = StartI;
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else
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EndI = StartI+1;
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float factor = time - (float)StartI;
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if (EndI > pAnim->m_NumFrames-1)
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EndI = 0;
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SModelAnimationFrame *pStartFrame = &m_pModelDef->GetAnimationFrames()[pAnim->m_FirstFrame + StartI];
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SModelAnimationFrame *pEndFrame = &m_pModelDef->GetAnimationFrames()[pAnim->m_FirstFrame + EndI];
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for (i=0; i<m_pModelDef->GetNumBones(); i++)
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{
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SModelAnimationKey *pKey1 = &m_pModelDef->GetAnimationKeys()[pStartFrame->m_FirstKey+i];
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SModelAnimationKey *pKey2 = &m_pModelDef->GetAnimationKeys()[pEndFrame->m_FirstKey+i];
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CVector3D Translation = pKey1->m_Translation + (pKey2->m_Translation - pKey1->m_Translation)*factor;
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m_pBonePoses[i].SetIdentity();
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CQuaternion from, to, rotation;
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from.FromEularAngles (pKey1->m_Rotation.X, pKey1->m_Rotation.Y, pKey1->m_Rotation.Z);
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to.FromEularAngles (pKey2->m_Rotation.X, pKey2->m_Rotation.Y, pKey2->m_Rotation.Z);
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rotation.Slerp (from, to, factor);
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m_pBonePoses[i] = rotation.ToMatrix();
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m_pBonePoses[i].Translate(Translation);
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int Parent = m_pModelDef->GetBones()[i].m_Parent;
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if (Parent > -1)
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m_pBonePoses[i] = m_pBonePoses[Parent] * m_pBonePoses[i];
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}
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}
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void CModel::ClearPose()
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{
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//for each bone, set the bone's pose to the intial pose
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for (int i=0; i<m_pModelDef->GetNumBones(); i++)
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m_pBonePoses[i] = m_pModelDef->GetBones()[i].m_Absolute;
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}
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void RotateX (CMatrix3D *mat, float angle1, float angle2, float factor)
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{
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float Cos = cosf(angle1) + (cosf(angle2)-cosf(angle1))*factor;
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float Sin = sinf(angle1) + (sinf(angle2)-cosf(angle1))*factor;
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CMatrix3D RotX;
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RotX._11=1.0f; RotX._12=0.0f; RotX._13=0.0f; RotX._14=0.0f;
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RotX._21=0.0f; RotX._22=Cos; RotX._23=-Sin; RotX._24=0.0f;
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RotX._31=0.0f; RotX._32=Sin; RotX._33=Cos; RotX._34=0.0f;
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RotX._41=0.0f; RotX._42=0.0f; RotX._43=0.0f; RotX._44=1.0f;
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*mat = RotX * (*mat);
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}
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