void RasNormalMap::DoPerVertexLighting( VertexBuffer& workingVB, FaceList& workingFaces, RenderObject& obj )
{
const VEC3& camPos = g_env.renderer->m_camera.GetPos().GetVec3();
MAT44 matInvWorld = obj.m_matWorld.Inverse();
for (size_t iVert=0; iVert<obj.m_verts.size(); ++iVert)
{
SVertex& vert = obj.m_verts[iVert];
// Get the matrix which transforms vector from object space to tangent space
MAT44 matTBN;
matTBN.SetRow(0, VEC4(vert.tangent, 0));
matTBN.SetRow(1, VEC4(vert.binormal, 0));
matTBN.SetRow(2, VEC4(vert.normal, 0));
// Calc light dir in object space
const VEC3& lightDir = g_env.renderer->m_testLight.neg_dir;
vert.lightDirTS = Common::Transform_Vec3_By_Mat44(lightDir, matInvWorld, false).GetVec3();
// Transform!
vert.lightDirTS = Common::Transform_Vec3_By_Mat44(vert.lightDirTS, matTBN, false).GetVec3();
// Half-angle vector
VEC3 eyeDir = Common::Sub_Vec3_By_Vec3(camPos, vert.pos.GetVec3());
eyeDir.Normalize();
Common::Add_Vec3_By_Vec3(vert.halfAngleTS, eyeDir, lightDir);
vert.halfAngleTS.Normalize();
vert.halfAngleTS = Common::Transform_Vec3_By_Mat44(vert.halfAngleTS, matTBN, false).GetVec3();
}
}
void Camera::Yaw( float angle )
{
MAT44 rot;
rot.FromAxisAngle(VEC3::UNIT_Y, angle);
if(m_fixYawAxis) m_matRot = Common::Multiply_Mat44_By_Mat44(m_matRot, rot);
else m_matRot = Common::Multiply_Mat44_By_Mat44(rot, m_matRot);
}
void Camera::Update()
{
//更新输入
POINT curCursorPos;
GetCursorPos(&curCursorPos);
static POINT lastCursorPos = curCursorPos;
long dx = curCursorPos.x - lastCursorPos.x;
long dy = curCursorPos.y - lastCursorPos.y;
float yawDelta = 0, pitchDelta = 0;
if(dx) yawDelta = -dx/5.0f;
if(dy) pitchDelta = -dy/5.0f;
lastCursorPos = curCursorPos;
if(!m_bActive)
return;
//相机旋转
if(dx)
{
Yaw(yawDelta);
}
if(dy)
{
MAT44 rotX;
rotX.FromAxisAngle(VEC3::UNIT_X, pitchDelta);
//pitch
m_matRot = Common::Multiply_Mat44_By_Mat44(m_matRot, rotX);
}
//相机移动
VEC4 forward = GetDirection();
VEC4 right = GetRight();
forward = Common::Multiply_Vec4_By_K(forward, m_moveSpeed);
right = Common::Multiply_Vec4_By_K(right, m_moveSpeed);
if(GetAsyncKeyState('W') < 0) m_viewPt = Add_Vec4_By_Vec4(m_viewPt, forward);
else if(GetAsyncKeyState('S') < 0) m_viewPt = Sub_Vec4_By_Vec4(m_viewPt, forward);
if(GetAsyncKeyState('A') < 0) m_viewPt = Sub_Vec4_By_Vec4(m_viewPt, right);
else if(GetAsyncKeyState('D') < 0) m_viewPt = Add_Vec4_By_Vec4(m_viewPt, right);
m_viewPt.w = 1;
_BuildViewMatrix();
_BuildProjMatrix();
}
