//---------------------------------------------------------------------------//
void CameraComponent::setProjectionPersp( float yFov_deg, float fWidth, float fHeight, float fNear, float fFar )
{
m_matProjection = MathUtil::perspectiveFov( yFov_deg, fWidth, fHeight, fNear, fFar );
m_fNear = fNear;
m_fFar = fFar;
m_fFovDeg = yFov_deg;
m_bIsOrtho = false;
m_fWidth = fWidth;
m_fHeight = fHeight;
//Calculate focal length
float fFovHor2 = glm::atan( getAspectRatio() * glm::tan( getFovRad() / 2.0f ) );
m_fFocalLength = 1.0f / glm::tan( fFovHor2 );
onProjectionChanged();
}
void kore::Camera::setProjectionPersp(float yFov_deg, float fWidth,
float fHeight, float fNear, float fFar) {
_matProjection = glm::perspectiveFov(yFov_deg, fWidth,
fHeight, fNear, fFar);
_fNear = fNear;
_fFar = fFar;
_fFovDeg = yFov_deg;
_bIsOrtho = false;
_fWidth = fWidth;
_fHeight = fHeight;
// Calculate focal length
float fFovHor2 = glm::atan(
getAspectRatio() * glm::tan(getFovRad() / 2.0f));
_fFocalLength = 1.0f / glm::tan(fFovHor2);
paramsChanged();
}
std::vector<glm::vec3> kore::Camera::getWSfrustumCorners() {
glm::mat4 matViewInv = getViewInv();
// calculate frustum corner coordinates
float fFov2 = getFovRad() / 2.0f;
float tanFov2 = glm::tan(fFov2);
float h2Far = tanFov2 * _fFar;
float h2Near = tanFov2 * _fNear;
float hFar = 2.0f * h2Far;
float hNear = 2.0f * h2Near;
const glm::ivec2& res =
kore::RenderManager::getInstance()->getRenderResolution();
float aspect = static_cast<float>(res.x) / static_cast<float>(res.y);
float w2Far = (hFar * aspect) / 2.0f;
float w2Near = (hNear * aspect) / 2.0f;
glm::vec3 v3Corners[8];
v3Corners[0] = glm::vec3(-1.0f * w2Near, -1.0f * h2Near, -_fNear); // lbn
v3Corners[1] = glm::vec3(1.0f * w2Near, -1.0f * h2Near, -_fNear); // rbn
v3Corners[2] = glm::vec3(1.0f * w2Near, 1.0f * h2Near, -_fNear); // rtn
v3Corners[3] = glm::vec3(-1.0f * w2Near, 1.0f * h2Near, -_fNear); // ltn
v3Corners[4] = glm::vec3(-1.0f * w2Far, -1.0f * h2Far, -_fFar); // lbn
v3Corners[5] = glm::vec3(1.0f * w2Far, -1.0f * h2Far, -_fFar); // rbn
v3Corners[6] = glm::vec3(1.0f * w2Far, 1.0f * h2Far, -_fFar); // rtn
v3Corners[7] = glm::vec3(-1.0f * w2Far, 1.0f * h2Far, -_fFar); // ltn
std::vector<glm::vec3> vReturnCorners;
// transform each corner into WS
for (int i = 0; i < 8; ++i) {
glm::vec4 v4Result = matViewInv * glm::vec4(v3Corners[ i ], 1.0f);
vReturnCorners.push_back(glm::vec3(v4Result.x, v4Result.y, v4Result.z));
}
return vReturnCorners;
}
//---------------------------------------------------------------------------//
FixedArray<glm::vec3, 8u> CameraComponent::getWSfrustumCorners(float aViewportAspectRatio)
{
//calculate frustum corner coordinates
float fFov2 = getFovRad() * 0.5f;
float tanFov2 = glm::tan( fFov2 );
float h2Far = tanFov2 * m_fFar;
float h2Near = tanFov2 * m_fNear;
float hFar = 2.0f * h2Far;
float hNear = 2.0f * h2Near;
Rendering::RenderOutput* renderer = Fancy::GetCurrentRenderOutput();
float aspect = aViewportAspectRatio;
float w2Far = ( hFar * aspect ) / 2.0f;
float w2Near = ( hNear * aspect ) / 2.0f;
glm::vec3 v3Corners[ 8 ];
v3Corners[ 0 ] = glm::vec3( -1.0f * w2Near, -1.0f * h2Near, -m_fNear ); //l,b,n
v3Corners[ 1 ] = glm::vec3( 1.0f * w2Near, -1.0f * h2Near, -m_fNear ); //r,b,n
v3Corners[ 2 ] = glm::vec3( 1.0f * w2Near, 1.0f * h2Near, -m_fNear ); //r,t,n
v3Corners[ 3 ] = glm::vec3( -1.0f * w2Near, 1.0f * h2Near, -m_fNear ); //l,t,n
v3Corners[ 4 ] = glm::vec3( -1.0f * w2Far, -1.0f * h2Far, -m_fFar ); //l,b,n
v3Corners[ 5 ] = glm::vec3( 1.0f * w2Far, -1.0f * h2Far, -m_fFar ); //r,b,n
v3Corners[ 6 ] = glm::vec3( 1.0f * w2Far, 1.0f * h2Far, -m_fFar ); //r,t,n
v3Corners[ 7 ] = glm::vec3( -1.0f * w2Far, 1.0f * h2Far, -m_fFar ); //l,t,n
FixedArray<glm::vec3, 8u> vReturnCorners;
vReturnCorners.resize(8);
//transform each corner into WS
for( int i = 0; i < 8; ++i )
{
vReturnCorners[i] = glm::vec3( m_matViewInv * glm::vec4( v3Corners[ i ], 1.0f ) );
}
return vReturnCorners;
}
