void CShapeModule::InitParticleForCircle(CVec3& localPos, CVec3& direction, float fParticleScale) const
{
direction = CVec3(1, 0, 0);
CQuaternion quat;
quat.FromPitchYawRoll(0, 0, PARTICLE_RAND_RANGE(0, DegreesToRadians(m_fArcForCircle)));
direction *= quat;
float fRadius = m_fRadius * fParticleScale;
localPos = direction * (m_bEmitFromShell ? fRadius : PARTICLE_RAND_RANGE(0, fRadius));
if (m_bRandomDirection)
{
direction = GetRandomDirection();
}
}
void CShapeModule::Render(CParticleEmitter* pEmitter)
{
BEATS_ASSERT(pEmitter != nullptr);
const CMat4& emitterMat = pEmitter->GetWorldTM();
switch (m_emitShapeType)
{
case EEmitShapeType::eEST_Sphere:
case EEmitShapeType::eEST_HemiSphere:
{
CMat4 emitterSphereMat;
emitterSphereMat.FromPitchYawRoll(DegreesToRadians(90), 0, 0);
emitterSphereMat = emitterMat * emitterSphereMat;
bool bHemiSphere = m_emitShapeType == EEmitShapeType::eEST_HemiSphere;
float fRate = bHemiSphere ? 0.5f : 1.0f;
CShapeRenderer::GetInstance()->DrawCircle(emitterSphereMat, m_fRadius, 0x00FF00FF, false, 1.0f);
CMat4 mat;
mat.FromPitchYawRoll(0, MATH_PI_HALF, MATH_PI_HALF);
mat = emitterSphereMat * mat;
CShapeRenderer::GetInstance()->DrawCircle(mat, m_fRadius, 0xFF0000FF, false, fRate);
mat.FromPitchYawRoll(MATH_PI, 0, -MATH_PI_HALF);
mat = emitterSphereMat * mat;
CShapeRenderer::GetInstance()->DrawCircle(mat, m_fRadius, 0x0000FFFF, false, fRate);
}
break;
case EEmitShapeType::eEST_Cone:
{
CMat4 emitterConeMat;
emitterConeMat.FromPitchYawRoll(DegreesToRadians(90), 0, 0);
emitterConeMat = emitterMat * emitterConeMat;
float fTopRadius = m_fRadius + m_fConeLength * tanf(DegreesToRadians(m_fAngle));
CShapeRenderer::GetInstance()->DrawCone(emitterConeMat, m_fRadius, fTopRadius, m_fConeLength, 0x0000FFFF, 0x00FF00FF, 0xFF0000FF, false);
}
break;
case EEmitShapeType::eEST_Box:
CShapeRenderer::GetInstance()->DrawBox(emitterMat, m_boxSize.X(), m_boxSize.Y(), m_boxSize.Z(), 0xFF0000FF, false);
break;
case EEmitShapeType::eEST_Mesh:
break;
case EEmitShapeType::eEST_Circle:
{
CVertexPC startPos, endPos;
startPos.color = 0xFFFF00FF;
endPos.color = 0xFFFF00FF;
startPos.position = pEmitter->GetWorldTM().GetTranslate();
endPos.position = CVec3(0, 0, m_fRadius) * pEmitter->GetWorldTM();
CRenderManager::GetInstance()->RenderLine(startPos, endPos, 1.0f);
CQuaternion quat;
quat.FromPitchYawRoll(0, DegreesToRadians(m_fArcForCircle), 0);
endPos.position = (CVec3(0, 0, m_fRadius) * quat) * pEmitter->GetWorldTM();
CRenderManager::GetInstance()->RenderLine(startPos, endPos, 1.0f);
CMat4 emitterConeMat;
emitterConeMat.FromPitchYawRoll(DegreesToRadians(90), 0, 0);
emitterConeMat = emitterMat * emitterConeMat;
CShapeRenderer::GetInstance()->DrawCircle(emitterConeMat, m_fRadius, 0xFFFF00FF, false, m_fArcForCircle / 360.f);
}
break;
case EEmitShapeType::eEST_Edge:
{
CVertexPC startPos, endPos;
CVec3 rightDir = emitterMat.GetRightVec3();
startPos.position = rightDir * m_fRadius;
startPos.color = 0xFFFF00FF;
endPos.position = rightDir * -m_fRadius;
endPos.color = 0xFFFF00FF;
CRenderManager::GetInstance()->RenderLine(startPos, endPos, 3.0f);
}
break;
default:
BEATS_ASSERT(false, "Never reach here!");
break;
}
}
