SpliceMaya/FabricSpliceRenderCallback.cpp at picasso · pbiswal/SpliceMaya · GitHub

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
#include <QtCore/QtCore>

#include "FabricSpliceRenderCallback.h"
#include "FabricSpliceBaseInterface.h"
#include "FabricSpliceToolContext.h"

#include <maya/MGlobal.h>
#include <maya/M3dView.h>
#include <maya/MFnCamera.h>
#include <maya/MFnDagNode.h>
#include <maya/MDagPath.h>
#include <maya/MMatrix.h>
#include <maya/MAnimControl.h>

bool gRTRPassEnabled = true;

FabricCore::RTVal FabricSpliceRenderCallback::sDrawContext;

bool isRTRPassEnabled()
{
  return gRTRPassEnabled;
}

void enableRTRPass(bool enable)
{
  gRTRPassEnabled = enable;
}

FabricCore::RTVal & FabricSpliceRenderCallback::getDrawContext(M3dView & view)
{
  if(!sDrawContext.isValid())
    sDrawContext = FabricSplice::constructObjectRTVal("DrawContext");
  else if(sDrawContext.isObject() && sDrawContext.isNullObject())
    sDrawContext = FabricSplice::constructObjectRTVal("DrawContext");

  // sync the time
  sDrawContext.setMember("time", FabricSplice::constructFloat32RTVal(MAnimControl::currentTime().as(MTime::kSeconds)));

  //////////////////////////
  // Setup the viewport
  FabricCore::RTVal inlineViewport = sDrawContext.maybeGetMember("viewport");
  double width = view.portWidth();
  double height = view.portHeight();
  std::vector<FabricCore::RTVal> args(3);
  args[0] = sDrawContext;
  args[1] = FabricSplice::constructFloat64RTVal(width);
  args[2] = FabricSplice::constructFloat64RTVal(height);
  inlineViewport.callMethod("", "resize", 3, &args[0]);

  {
    FabricCore::RTVal inlineCamera = inlineViewport.callMethod("InlineCamera", "getCamera", 0, 0);

    MDagPath cameraDag;
    view.getCamera(cameraDag);
    MFnCamera camera(cameraDag);

    MMatrix projectionMatrix;
    view.projectionMatrix(projectionMatrix);
    projectionMatrix = projectionMatrix.transpose();

    FabricCore::RTVal projectionMatrixExtArray = FabricSplice::constructExternalArrayRTVal("Float64", 16, &projectionMatrix.matrix);
    FabricCore::RTVal projectionVal = inlineCamera.maybeGetMember("projection");
    projectionVal.callMethod("", "set", 1, &projectionMatrixExtArray);
    inlineCamera.setMember("projection", projectionVal);

    MMatrix mayaCameraMatrix = cameraDag.inclusiveMatrix();
    FabricCore::RTVal cameraMat = FabricSplice::constructRTVal("Mat44");

    try
    {
      FabricCore::RTVal cameraMatData = cameraMat.callMethod("Data", "data", 0, 0);
      float * cameraMatFloats = (float*)cameraMatData.getData();
      if(cameraMat) {
        cameraMatFloats[0] = (float)mayaCameraMatrix[0][0];
        cameraMatFloats[1] = (float)mayaCameraMatrix[1][0];
        cameraMatFloats[2] = (float)mayaCameraMatrix[2][0];
        cameraMatFloats[3] = (float)mayaCameraMatrix[3][0];
        cameraMatFloats[4] = (float)mayaCameraMatrix[0][1];
        cameraMatFloats[5] = (float)mayaCameraMatrix[1][1];
        cameraMatFloats[6] = (float)mayaCameraMatrix[2][1];
        cameraMatFloats[7] = (float)mayaCameraMatrix[3][1];
        cameraMatFloats[8] = (float)mayaCameraMatrix[0][2];
        cameraMatFloats[9] = (float)mayaCameraMatrix[1][2];
        cameraMatFloats[10] = (float)mayaCameraMatrix[2][2];
        cameraMatFloats[11] = (float)mayaCameraMatrix[3][2];
        cameraMatFloats[12] = (float)mayaCameraMatrix[0][3];
        cameraMatFloats[13] = (float)mayaCameraMatrix[1][3];
        cameraMatFloats[14] = (float)mayaCameraMatrix[2][3];
        cameraMatFloats[15] = (float)mayaCameraMatrix[3][3];

        inlineCamera.callMethod("", "setFromMat44", 1, &cameraMat);
      }
    }
    catch (FabricCore::Exception e)
    {
      mayaLogErrorFunc(e.getDesc_cstr());
    }
  }

  return sDrawContext;
}

void FabricSpliceRenderCallback::draw(const MString &str, void *clientData){

  if(!gRTRPassEnabled)
    return;

  try
  {
    if(!FabricSplice::SceneManagement::hasRenderableContent())
      return;
  }
  catch(FabricCore::Exception e)
  {
    mayaLogErrorFunc(e.getDesc_cstr());
  }
  catch(FabricSplice::Exception e)
  {
    mayaLogErrorFunc(e.what());
  }

  M3dView view;
  M3dView::getM3dViewFromModelPanel(str, view);
  view.beginGL();

  // draw all gizmos
  try
  {
    FabricSplice::SceneManagement::drawOpenGL(getDrawContext(view));
  }
  catch(FabricSplice::Exception e)
  {
    mayaLogErrorFunc(e.what());
    return;
  }
  catch(FabricCore::Exception e)
  {
    mayaLogErrorFunc(e.getDesc_cstr());
    return;
  }

  view.endGL();
}