shapecloud.cpp

机甲指挥官2源代码

	particle->m_color.red = spec->m_pRed.ComputeValue(age, seed);
	particle->m_color.green = spec->m_pGreen.ComputeValue(age, seed);
	particle->m_color.blue = spec->m_pBlue.ComputeValue(age, seed);
	particle->m_color.alpha = spec->m_pAlpha.ComputeValue(age, seed);
	return true;
}

//------------------------------------------------------------------------------
//
void gosFX::ShapeCloud::Draw(DrawInfo *info)
{
	Check_Object(this);
	Check_Object(info);
	Check_Object(info->m_parentToWorld);

	//
	//----------------------------
	// Set up the common draw info
	//----------------------------
	//
	if (m_activeParticleCount)
	{
		MidLevelRenderer::DrawScalableShapeInformation dinfo;
		MidLevelRenderer::MLRShape *shape = GetSpecification()->m_shape;
		dinfo.clippingFlags.SetClippingState(0x3f);
		dinfo.worldToShape = NULL;
		Specification *spec = GetSpecification();
		Check_Object(spec);
		dinfo.state.Combine(info->m_state, spec->m_state);
		dinfo.activeLights = NULL;
		dinfo.nrOfActiveLights = 0;
		dinfo.shape = shape;
		Stuff::LinearMatrix4D local_to_world;
		local_to_world.Multiply(m_localToParent, *info->m_parentToWorld);

		//
		//--------------------------------------------------------------
		// Check the orientation mode.  The first case is XY orientation
		//--------------------------------------------------------------
		//
		unsigned i;
		if (spec->m_alignZUsingX)
		{
			if (spec->m_alignZUsingY)
			{
				//
				//-----------------------------------------
				// Get the camera location into local space
				//-----------------------------------------
				//
				Stuff::Point3D
					camera_in_world(info->m_clipper->GetCameraToWorldMatrix());
				Stuff::Point3D camera_in_cloud;
				camera_in_cloud.MultiplyByInverse(
					camera_in_world,
					local_to_world
				);
				for (unsigned i = 0; i < m_activeParticleCount; i++)
				{
					Particle *particle = GetParticle(i);
					Check_Object(particle);

					//
					//-----------------------------------------------------------------
					// If the particle is still alive, concatenate into world space and
					// issue the draw command
					//-----------------------------------------------------------------
					//
					if (particle->m_age < 1.0f)
					{
						Stuff::Vector3D direction_in_cloud;
						direction_in_cloud.Subtract(
							camera_in_cloud,
							particle->m_localTranslation
						);
						Stuff::LinearMatrix4D shape_to_cloud;
						shape_to_cloud.BuildRotation(particle->m_localRotation);
						shape_to_cloud.AlignLocalAxisToWorldVector(
							direction_in_cloud,
							Stuff::Z_Axis,
							Stuff::Y_Axis,
							Stuff::X_Axis
						);
						shape_to_cloud.BuildTranslation(particle->m_localTranslation);
						Stuff::LinearMatrix4D shape_to_world;
						shape_to_world.Multiply(
							shape_to_cloud,
							local_to_world
						);
						dinfo.shapeToWorld = &shape_to_world;
						Stuff::Vector3D
							scale(
								particle->m_scale,
								particle->m_scale,
								particle->m_scale
							);
						dinfo.scaling = &scale;
						dinfo.paintMe = &particle->m_color;
		 				info->m_clipper->DrawScalableShape(&dinfo);
					}
				}
			}

			//
			//-----------------------
			// Handle X-only rotation
			//-----------------------
			//
			else
			{
				//
				//-----------------------------------------
				// Get the camera location into local space
				//-----------------------------------------
				//
				Stuff::Point3D
					camera_in_world(info->m_clipper->GetCameraToWorldMatrix());
				Stuff::Point3D camera_in_cloud;
				camera_in_cloud.MultiplyByInverse(
					camera_in_world,
					local_to_world
				);
				for (unsigned i = 0; i < m_activeParticleCount; i++)
				{
					Particle *particle = GetParticle(i);
					Check_Object(particle);

					//
					//-----------------------------------------------------------------
					// If the particle is still alive, concatenate into world space and
					// issue the draw command
					//-----------------------------------------------------------------
					//
					if (particle->m_age < 1.0f)
					{
						Stuff::Vector3D direction_in_cloud;
						direction_in_cloud.Subtract(
							camera_in_cloud,
							particle->m_localTranslation
						);
						Stuff::LinearMatrix4D shape_to_cloud;
						shape_to_cloud.BuildRotation(particle->m_localRotation);
						shape_to_cloud.AlignLocalAxisToWorldVector(
							direction_in_cloud,
							Stuff::Z_Axis,
							Stuff::X_Axis,
							-1
						);
						shape_to_cloud.BuildTranslation(particle->m_localTranslation);
						Stuff::LinearMatrix4D shape_to_world;
						shape_to_world.Multiply(
							shape_to_cloud,
							local_to_world
						);
						dinfo.shapeToWorld = &shape_to_world;
						Stuff::Vector3D
							scale(
								particle->m_scale,
								particle->m_scale,
								particle->m_scale
							);
						dinfo.scaling = &scale;
						dinfo.paintMe = &particle->m_color;
		 				info->m_clipper->DrawScalableShape(&dinfo);
					}
				}
			}
		}

		//
		//-------------------------------------------------------
		// Each matrix needs to be aligned to the camera around Y
		//-------------------------------------------------------
		//
		else if (spec->m_alignZUsingY)
		{
			//
			//-----------------------------------------
			// Get the camera location into local space
			//-----------------------------------------
			//
			Stuff::Point3D
				camera_in_world(info->m_clipper->GetCameraToWorldMatrix());
			Stuff::Point3D camera_in_cloud;
			camera_in_cloud.MultiplyByInverse(
				camera_in_world,
				local_to_world
			);
			for (unsigned i = 0; i < m_activeParticleCount; i++)
			{
				Particle *particle = GetParticle(i);
				Check_Object(particle);

				//
				//-----------------------------------------------------------------
				// If the particle is still alive, concatenate into world space and
				// issue the draw command
				//-----------------------------------------------------------------
				//
				if (particle->m_age < 1.0f)
				{
					Stuff::Vector3D direction_in_cloud;
					direction_in_cloud.Subtract(
						camera_in_cloud,
						particle->m_localTranslation
					);
					Stuff::LinearMatrix4D shape_to_cloud;
					shape_to_cloud.BuildRotation(particle->m_localRotation);
					shape_to_cloud.AlignLocalAxisToWorldVector(
						direction_in_cloud,
						Stuff::Z_Axis,
						Stuff::Y_Axis,
						-1
					);
					shape_to_cloud.BuildTranslation(particle->m_localTranslation);
					Stuff::LinearMatrix4D shape_to_world;
					shape_to_world.Multiply(
						shape_to_cloud,
						local_to_world
					);
					dinfo.shapeToWorld = &shape_to_world;
					Stuff::Vector3D
						scale(
							particle->m_scale,
							particle->m_scale,
							particle->m_scale
						);
					dinfo.scaling = &scale;
					dinfo.paintMe = &particle->m_color;
		 			info->m_clipper->DrawScalableShape(&dinfo);
				}
			}
		}

		//
		//---------------------------------------------------------------
		// No alignment is necessary, so just multiply out all the active
		// particles
		//---------------------------------------------------------------
		//
		else
		{
			for (i=0; i < m_activeParticleCount; i++)
			{
				Particle *particle = GetParticle(i);
				Check_Object(particle);

				//
				//-----------------------------------------------------------------
				// If the particle is still alive, concatenate into world space and
				// issue the draw command
				//-----------------------------------------------------------------
				//
				if (particle->m_age < 1.0f)
				{
					Stuff::LinearMatrix4D shape_to_cloud;
					shape_to_cloud.BuildTranslation(particle->m_localTranslation);
					shape_to_cloud.BuildRotation(particle->m_localRotation);
					Stuff::LinearMatrix4D shape_to_world;
					shape_to_world.Multiply(
						shape_to_cloud,
						local_to_world
					);
					dinfo.shapeToWorld = &shape_to_world;
					Stuff::Vector3D
						scale(
							particle->m_scale,
							particle->m_scale,
							particle->m_scale
						);
					dinfo.scaling = &scale;
					dinfo.paintMe = &particle->m_color;
		 			info->m_clipper->DrawScalableShape(&dinfo);
				}
			}
		}
	}

	//
	//----------------------------
	// Let our parent do its thing
	//----------------------------
	//
	SpinningCloud::Draw(info);
}

//------------------------------------------------------------------------------
//
void
	gosFX::ShapeCloud::TestInstance() const
{
	Verify(IsDerivedFrom(DefaultData));
}