mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-20 12:44:46 +00:00
110 lines
3.8 KiB
C++
110 lines
3.8 KiB
C++
//-----------------------------------------------------------------------------
|
|
// Copyright (c) 2012 GarageGames, LLC
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to
|
|
// deal in the Software without restriction, including without limitation the
|
|
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
// sell copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
// IN THE SOFTWARE.
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include "platform/platform.h"
|
|
#include "T3D/decal/decalSphere.h"
|
|
|
|
#include "scene/zones/sceneZoneSpaceManager.h"
|
|
#include "T3D/decal/decalInstance.h"
|
|
|
|
|
|
F32 DecalSphere::smDistanceTolerance = 30.0f;
|
|
F32 DecalSphere::smRadiusTolerance = 40.0f;
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
bool DecalSphere::tryAddItem( DecalInstance* inst )
|
|
{
|
|
// If we are further away from the center than our tolerance
|
|
// allows, don't use this sphere.
|
|
//
|
|
// Note that we take the distance from the nearest point on the
|
|
// bounding sphere rather than the distance to the center of the
|
|
// decal. This takes decal sizes into account and generally works
|
|
// better.
|
|
|
|
const F32 distCenterToCenter = ( mWorldSphere.center - inst->mPosition ).len();
|
|
const F32 distBoundsToCenter = distCenterToCenter - inst->mSize / 2.f;
|
|
|
|
if( distBoundsToCenter > smDistanceTolerance )
|
|
return false;
|
|
|
|
// Also, if adding the current decal to the sphere would make
|
|
// it larger than our radius tolerance, don't use it.
|
|
|
|
const F32 newRadius = distCenterToCenter + inst->mSize / 2.f + 0.5f;
|
|
if( newRadius > mWorldSphere.radius && newRadius > smRadiusTolerance )
|
|
return false;
|
|
|
|
// Otherwise, go with this sphere and add the item to it.
|
|
|
|
mItems.push_back( inst );
|
|
|
|
// Update the sphere bounds, if necessary.
|
|
|
|
if( newRadius > mWorldSphere.radius )
|
|
updateWorldSphere();
|
|
|
|
return true;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
void DecalSphere::updateWorldSphere()
|
|
{
|
|
AssertFatal( mItems.size() >= 1, "DecalSphere::updateWorldSphere - Sphere is empty!" );
|
|
|
|
Box3F aabb( mItems[ 0 ]->getWorldBox() );
|
|
|
|
const U32 numItems = mItems.size();
|
|
for( U32 i = 1; i < numItems; ++ i )
|
|
aabb.intersect( mItems[ i ]->getWorldBox() );
|
|
|
|
mWorldSphere = aabb.getBoundingSphere();
|
|
|
|
// Clear the zoning data so that it gets recomputed.
|
|
mZones.clear();
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
|
|
void DecalSphere::updateZoning( SceneZoneSpaceManager* zoneManager )
|
|
{
|
|
mZones.clear();
|
|
|
|
// If there's only a single zone in the world, it must be the
|
|
// outdoor zone, so there's no point maintaining zoning information
|
|
// on all the decalspheres.
|
|
|
|
if( zoneManager->getNumZones() == 1 )
|
|
return;
|
|
|
|
// Otherwise query the scene graph for all zones that intersect with the
|
|
// AABB around our world sphere.
|
|
|
|
Box3F aabb( mWorldSphere.radius );
|
|
aabb.setCenter( mWorldSphere.center );
|
|
|
|
zoneManager->findZones( aabb, mZones );
|
|
}
|