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// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
// ospray
#include "Instance.h"
namespace ospray {
Instance::Instance(api::ISPCDevice &device, Group *_group)
: AddStructShared(device.getDRTDevice(), device), groupAPI(_group)
{
managedObjectType = OSP_INSTANCE;
}
std::string Instance::toString() const
{
return "ospray::Instance";
}
void Instance::commit()
{
group = getParamObject<Group>("group", groupAPI.ptr);
if (!group)
throw std::runtime_error(toString() + " received NULL 'group'");
motionTransform.readParams(*this);
// Initialize shared structure
getSh()->group = group->getSh();
getSh()->xfm = motionTransform.transform;
getSh()->rcp_xfm = rcp(getSh()->xfm);
getSh()->motionBlur = motionTransform.motionBlur;
getSh()->userID = getParam<uint32>("id", RTC_INVALID_GEOMETRY_ID);
}
box3f Instance::getBounds() const
{
box3f bounds;
const box3f groupBounds = group->getBounds();
// TODO get better bounds:
// - uses bounds at time 0.5, wrong if different shutter is used and does not
// include motion at all
// alternatives:
// - merge linear bounds from Embree (which is for time [0, 1]), but this
// needs a temporary RTCScene just for this instance
// - extend over all transformed bounds
// - this is too big, because keys outside of time [0, 1] are included
// - yet is is also too small, because interpolated transformations can
// lead to leaving the bounds of keys
bounds.extend(xfmBounds(motionTransform.transform, groupBounds));
return bounds;
}
void Instance::setEmbreeGeom(RTCScene scene, unsigned int geomID)
{
RTCGeometry geom = rtcGetGeometry(scene, geomID);
motionTransform.setEmbreeTransform(geom);
getSh()->scene = scene;
getSh()->geomID = geomID;
if (getSh()->motionBlur) {
rtcGetGeometryTransformFromScene(scene,
geomID,
.5f,
RTC_FORMAT_FLOAT3X4_COLUMN_MAJOR,
&getSh()->xfm); // for SciVis
getSh()->rcp_xfm = rcp(getSh()->xfm);
}
}
OSPTYPEFOR_DEFINITION(Instance *);
} // namespace ospray
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