1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "helperminimaldepth3d.hxx"
#include <drawinglayer/processor3d/baseprocessor3d.hxx>
#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
#include <drawinglayer/primitive3d/transformprimitive3d.hxx>
#include <drawinglayer/primitive3d/polygonprimitive3d.hxx>
#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
#include <sdr/contact/viewcontactofe3d.hxx>
#include <svx/sdr/contact/viewcontactofe3dscene.hxx>
#include <svx/obj3d.hxx>
#include <svx/scene3d.hxx>
namespace drawinglayer::processor3d
{
namespace {
class MinimalDephInViewExtractor : public BaseProcessor3D
{
private:
// the value which will be fetched as result
double mfMinimalDepth;
// as tooling, the process() implementation takes over API handling and calls this
// virtual render method when the primitive implementation is BasePrimitive3D-based.
virtual void processBasePrimitive3D(const primitive3d::BasePrimitive3D& rCandidate) override;
public:
explicit MinimalDephInViewExtractor(const geometry::ViewInformation3D& rViewInformation)
: BaseProcessor3D(rViewInformation),
mfMinimalDepth(DBL_MAX)
{}
// data access
double getMinimalDepth() const { return mfMinimalDepth; }
};
}
void MinimalDephInViewExtractor::processBasePrimitive3D(const primitive3d::BasePrimitive3D& rCandidate)
{
// it is a BasePrimitive3D implementation, use getPrimitive3DID() call for switch
switch(rCandidate.getPrimitive3DID())
{
case PRIMITIVE3D_ID_TRANSFORMPRIMITIVE3D :
{
// transform group. Remember current transformations
const primitive3d::TransformPrimitive3D& rPrimitive = static_cast< const primitive3d::TransformPrimitive3D& >(rCandidate);
const geometry::ViewInformation3D aLastViewInformation3D(getViewInformation3D());
// create new transformation; add new object transform from right side
const geometry::ViewInformation3D aNewViewInformation3D(
aLastViewInformation3D.getObjectTransformation() * rPrimitive.getTransformation(),
aLastViewInformation3D.getOrientation(),
aLastViewInformation3D.getProjection(),
aLastViewInformation3D.getDeviceToView(),
aLastViewInformation3D.getViewTime(),
aLastViewInformation3D.getExtendedInformationSequence());
updateViewInformation(aNewViewInformation3D);
// let break down
process(rPrimitive.getChildren());
// restore transformations
updateViewInformation(aLastViewInformation3D);
break;
}
case PRIMITIVE3D_ID_POLYGONHAIRLINEPRIMITIVE3D :
{
// PolygonHairlinePrimitive3D
const primitive3d::PolygonHairlinePrimitive3D& rPrimitive = static_cast< const primitive3d::PolygonHairlinePrimitive3D& >(rCandidate);
const basegfx::B3DPolygon& rPolygon = rPrimitive.getB3DPolygon();
const sal_uInt32 nCount(rPolygon.count());
for(sal_uInt32 a(0); a < nCount; a++)
{
const basegfx::B3DPoint aPointInView(getViewInformation3D().getObjectToView() * rPolygon.getB3DPoint(a));
if(aPointInView.getZ() < mfMinimalDepth)
{
mfMinimalDepth = aPointInView.getZ();
}
}
break;
}
case PRIMITIVE3D_ID_POLYPOLYGONMATERIALPRIMITIVE3D :
{
// PolyPolygonMaterialPrimitive3D
const primitive3d::PolyPolygonMaterialPrimitive3D& rPrimitive = static_cast< const primitive3d::PolyPolygonMaterialPrimitive3D& >(rCandidate);
const basegfx::B3DPolyPolygon& rPolyPolygon = rPrimitive.getB3DPolyPolygon();
const sal_uInt32 nPolyCount(rPolyPolygon.count());
for(sal_uInt32 a(0); a < nPolyCount; a++)
{
const basegfx::B3DPolygon& aPolygon(rPolyPolygon.getB3DPolygon(a));
const sal_uInt32 nCount(aPolygon.count());
for(sal_uInt32 b(0); b < nCount; b++)
{
const basegfx::B3DPoint aPointInView(getViewInformation3D().getObjectToView() * aPolygon.getB3DPoint(b));
if(aPointInView.getZ() < mfMinimalDepth)
{
mfMinimalDepth = aPointInView.getZ();
}
}
}
break;
}
default :
{
// process recursively
process(rCandidate.get3DDecomposition(getViewInformation3D()));
break;
}
}
}
} // end of namespace
// changed to create values using VCs, Primitive3DContainer and ViewInformation3D to allow
// removal of old 3D bucket geometry. There is one slight difference in the result, it's
// in [0.0 .. 1.0] for Z-Depth since the scaling of the scene as 2D object is no longer
// part of the 3D transformations. This could be added since the ViewContactOfE3dScene is
// given, but is not needed since the permutation of the depth values needs only be correct
// relative to each other
double getMinimalDepthInViewCoordinates(const E3dCompoundObject& rObject)
{
// this is an E3dCompoundObject, so it cannot be a scene (which is an E3dObject).
// Get primitive sequence using VC
const sdr::contact::ViewContactOfE3d& rVCObject = static_cast< sdr::contact::ViewContactOfE3d& >(rObject.GetViewContact());
const drawinglayer::primitive3d::Primitive3DContainer aPrimitives = rVCObject.getViewIndependentPrimitive3DContainer();
double fRetval(DBL_MAX);
if(!aPrimitives.empty())
{
const E3dScene* pScene(rObject.getRootE3dSceneFromE3dObject());
if(pScene)
{
// get ViewInformation3D from scene using VC
const sdr::contact::ViewContactOfE3dScene& rVCScene = static_cast< sdr::contact::ViewContactOfE3dScene& >(pScene->GetViewContact());
const drawinglayer::geometry::ViewInformation3D& aViewInfo3D(rVCScene.getViewInformation3D());
// the scene's object transformation is already part of aViewInfo3D.getObjectTransformation()
// for historical reasons (see ViewContactOfE3dScene::createViewInformation3D for more info)
// and the object's transform is part of aPrimitives (and taken into account when decomposing
// to PolygonHairlinePrimitive3D and PolyPolygonMaterialPrimitive3D). The missing part may be
// some Scene SdrObjects lying in-between which may need to be added. This is e.g. used in chart,
// and generally allowed in 3d scenes and their 3d object hierarchy
basegfx::B3DHomMatrix aInBetweenSceneMatrix;
E3dScene* pParentScene(rObject.getParentE3dSceneFromE3dObject());
while(pParentScene && pParentScene != pScene)
{
aInBetweenSceneMatrix = pParentScene->GetTransform() * aInBetweenSceneMatrix;
pParentScene = pParentScene->getParentE3dSceneFromE3dObject();
}
// build new ViewInformation containing all transforms
const drawinglayer::geometry::ViewInformation3D aNewViewInformation3D(
aViewInfo3D.getObjectTransformation() * aInBetweenSceneMatrix,
aViewInfo3D.getOrientation(),
aViewInfo3D.getProjection(),
aViewInfo3D.getDeviceToView(),
aViewInfo3D.getViewTime(),
aViewInfo3D.getExtendedInformationSequence());
// create extractor helper, process geometry and get return value
drawinglayer::processor3d::MinimalDephInViewExtractor aExtractor(aNewViewInformation3D);
aExtractor.process(aPrimitives);
fRetval = aExtractor.getMinimalDepth();
}
}
return fRetval;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
