[al] Add support for default rgba values and color threshold for exporting

plugin/al/mayautils/AL/maya/utils/PluginTranslatorOptions.cpp

@@ -142,10 +142,26 @@ bool PluginTranslatorOptions::addInt(const char* optionName, int defaultValue)
 //----------------------------------------------------------------------------------------------------------------------
 AL_MAYA_UTILS_PUBLIC
 bool PluginTranslatorOptions::addFloat(const char* optionName, float defaultValue)
+{
+    return addFloat(optionName, defaultValue, 1, "", true);
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+bool PluginTranslatorOptions::addFloat(const char* optionName, float value, int precision)
+{
+    return addFloat(optionName, value, precision, "", true);
+}
+
+bool PluginTranslatorOptions::addFloat(
+    const char* optionName,
+    float       value,
+    int         precision,
+    const char* controller,
+    bool        enableState)
 {
     if (isOption(optionName))
         return false;
-    m_options.emplace_back(optionName, defaultValue);
+    m_options.emplace_back(optionName, value, precision, controller, enableState);
     return true;
 }
 
@@ -548,17 +564,50 @@ void PluginTranslatorOptions::generateFloatGlobals(
     const MString&    niceName,
     const MString&    optionName,
     MString&          code,
-    float             value)
+    float             value,
+    int               precision,
+    const MString&    controller,
+    bool              enableState)
 {
     MString valueStr;
     valueStr = value;
     MString controlName = MString(prefix) + "_" + makeName(optionName);
+    // Check and add on/off command if any
+    MString onOffCmd;
+    MString postUpdateCmd;
+    MString deferredPostUpdateCmd;
+    if (controller.length()) {
+        MString prefixedCtrl(MString(prefix) + "_" + makeName(controller));
+        if (enableState) {
+            onOffCmd = "checkBox -e "
+                       "-onCommand \"floatFieldGrp -e -en 1 "
+                + controlName
+                + "\" "
+                  "-offCommand \"floatFieldGrp -e -en 0 "
+                + controlName + "\" " + prefixedCtrl + "; ";
+            // And update the default state according to the checkbox
+            postUpdateCmd = "floatFieldGrp -e -en `checkBox -q -v " + prefixedCtrl + "` "
+                + controlName + "; ";
+        } else {
+            onOffCmd = "checkBox -e "
+                       "-onCommand \"floatFieldGrp -e -en 0 "
+                + controlName
+                + "\" "
+                  "-offCommand \"floatFieldGrp -e -en 1 "
+                + controlName + "\" " + prefixedCtrl + "; ";
+            postUpdateCmd = "floatFieldGrp -e -en (`checkBox -q -v " + prefixedCtrl + "` ? 0: 1) "
+                + controlName + "; ";
+        }
+        onOffCmd += postUpdateCmd;
+        deferredPostUpdateCmd = MString() + "eval(\"" + postUpdateCmd + "\");";
+    }
+
     MString createCommand = MString("global proc create_") + controlName + "() {"
-        + MString("floatFieldGrp -l \"") + niceName + "\" -v1 " + valueStr + " " + controlName
-        + ";}\n";
+        + MString("floatFieldGrp -l \"") + niceName + "\" -v1 " + valueStr + " -pre " + precision
+        + " " + controlName + ";" + onOffCmd + "}\n";
     MString postCommand = MString("global proc post_") + controlName
-        + "(string $value){ eval (\"floatFieldGrp -e -v1 \" + $value + \" " + controlName
-        + "\");}\n";
+        + "(string $value){ eval (\"floatFieldGrp -e -v1 \" + $value + \" " + controlName + "\");"
+        + deferredPostUpdateCmd + "}\n";
     MString buildCommand = MString("global proc string build_") + controlName
         + "(){ string $str = \"" + makeName(optionName) + "=\" + `floatFieldGrp -q -v1 "
         + controlName + "` + \";\"; return $str;}\n";
@@ -644,7 +693,15 @@ MString PluginTranslatorOptions::generateGUI(const char* const prefix, MString&
             generateIntGlobals(prefix, opt->name, opt->name, guiCode, opt->defInt);
             break;
         case OptionType::kFloat:
-            generateFloatGlobals(prefix, opt->name, opt->name, guiCode, opt->defFloat);
+            generateFloatGlobals(
+                prefix,
+                opt->name,
+                opt->name,
+                guiCode,
+                opt->defFloat,
+                opt->precision,
+                opt->controller,
+                opt->enableState);
             break;
         case OptionType::kString:
             generateStringGlobals(prefix, opt->name, opt->name, guiCode, opt->defString.asChar());

plugin/al/mayautils/AL/maya/utils/PluginTranslatorOptions.h

@@ -309,6 +309,29 @@ class PluginTranslatorOptions
     AL_MAYA_UTILS_PUBLIC
     bool addFloat(const char* optionName, float defaultValue = 0.0f);
 
+    /// \brief  Add a float value with precision to the translator options
+    /// \param  optionName the name of the option
+    /// \param  value the default value for the option
+    /// \param  precision the default precision for the option
+    /// \return true if the option was successfully added. False if the option is a duplicate
+    AL_MAYA_UTILS_PUBLIC
+    bool addFloat(const char* optionName, float value, int precision);
+
+    /// \brief  Add a float value with precision and controller state to the translator options
+    /// \param  optionName the name of the option
+    /// \param  value the default value for the option
+    /// \param  precision the default precision for the option
+    /// \param  controller the controller UI name that triggers enabling
+    /// \param  enableState the state for enabling this field
+    /// \return true if the option was successfully added. False if the option is a duplicate
+    AL_MAYA_UTILS_PUBLIC
+    bool addFloat(
+        const char* optionName,
+        float       value,
+        int         precision,
+        const char* controller,
+        bool        enableState);
+
     /// \brief  Add a string value to the translator options
     /// \param  optionName the name of the option
     /// \param  defaultValue the default value for the option
@@ -387,6 +410,9 @@ class PluginTranslatorOptions
         MString              defString;   ///< default string value
         std::vector<MString> enumStrings; ///< the text values for the enums
         OptionType           type;        ///< the type of the option
+        int                  precision { 1 };
+        MString              controller {};
+        bool                 enableState { true };
 
         /// \brief  ctor
         /// \param  name the name of the option
@@ -411,9 +437,20 @@ class PluginTranslatorOptions
         /// \brief  ctor
         /// \param  name the name of the option
         /// \param  defVal the default value
-        Option(const char* const name, const float& defVal)
+        /// \param  precision the default precision for the option
+        /// \param  controller the controller UI name that triggers enabling
+        /// \param  enableState the state for enabling this field
+        Option(
+            const char* const name,
+            const float&      defVal,
+            int               precision,
+            const char*       controller,
+            bool              enableState)
             : name(name)
             , type(OptionType::kFloat)
+            , precision(precision)
+            , controller(controller ? controller : "")
+            , enableState(enableState)
         {
             defFloat = defVal;
         }
@@ -480,7 +517,10 @@ class PluginTranslatorOptions
         const MString&    niceName,
         const MString&    optionName,
         MString&          code,
-        float);
+        float             value,
+        int               precision,
+        const MString&    controller,
+        bool              enableState);
     static void generateStringGlobals(
         const char* const prefix,
         const MString&    niceName,

plugin/al/plugin/AL_USDMayaTestPlugin/AL/usdmaya/test_DiffPrimVar.cpp

@@ -169,6 +169,70 @@ TEST(DiffPrimVar, diffGeomExtent)
     }
 }
 
+TEST(DiffPrimVar, diffGeomRGBA)
+{
+    MFileIO::newFile(true);
+    MStringArray result;
+    ASSERT_TRUE(
+        MGlobal::executeCommand(
+            "polyCube -w 1 -h 1 -d 1 -sx 1 -sy 1 -sz 1 -ax 0 1 0 -cuv 4 -ch 1;;", result)
+        == MS::kSuccess);
+    ASSERT_TRUE(
+        MGlobal::executeCommand("setAttr \"pCubeShape1.displayColors\" 1;") == MS::kSuccess);
+
+    MSelectionList mSel;
+    EXPECT_TRUE(mSel.add("pCube1") == MS::kSuccess);
+
+    MDagPath mDagPath;
+    mSel.getDagPath(0, mDagPath);
+    MFnMesh mFnMesh(mDagPath);
+    mFnMesh.createColorSetWithName("displayColor");
+
+    // Set one polyCube face color to blue and the alpha to 1
+    MColor blueColour(0.0f, 0.0f, 1.0f, 1.0f);
+    mFnMesh.setFaceColor(blueColour, 4);
+
+    // Run export comand
+    auto        tempPath = buildTempPath("AL_USDMayaTests_diffRGBA.usda");
+    std::string exportCommand = R"(
+    file -force -options "Dynamic_Attributes=1;Duplicate_Instances=1;Merge_Transforms=1;Animation=0;Use_Timeline_Range=0;Frame_Min=0;Frame_Max=1;Sub_Samples=1;Filter_Sample=0;Export_At_Which_Time=0;Export_In_World_Space=0;Activate_all_Plugin_Translators=1;Active_Translator_List=;Inactive_Translator_List=;Nurbs_Curves=1;Meshes=1;Mesh_Face_Connects=1;Mesh_Points=1;Mesh_Extents=1;Mesh_Normals=1;Mesh_Vertex_Creases=1;Mesh_Edge_Creases=1;Mesh_UVs=1;Mesh_UV_Only=0;Mesh_Points_as_PRef=0;Mesh_Colours=1;Default_RGB=0.2;Default_Alpha=1;Mesh_Holes=1;Write_Normals_as_Primvars=0;Reverse_Opposite_Normals=0;Subdivision_scheme=0;Compaction_Level=3;" -type "AL usdmaya export" -pr -ea
+  )";
+    exportCommand += "\"";
+    exportCommand += tempPath;
+    exportCommand += "\"";
+    ASSERT_TRUE(MGlobal::executeCommand(exportCommand.c_str()) == MS::kSuccess);
+
+    // Validate export
+    UsdStageRefPtr stage = UsdStage::Open(tempPath);
+
+    MString path = MString("/pCube1");
+    SdfPath primPath(path.asChar());
+    UsdPrim geomPrim = stage->GetPrimAtPath(primPath);
+    ASSERT_TRUE(geomPrim.IsValid());
+    UsdGeomMesh geom(geomPrim);
+
+    // Confirm displayOpacity is 1.0
+    const TfToken displayOpacityToken("primvars:displayOpacity");
+    UsdAttribute  opacityAttribute = geomPrim.GetAttribute(displayOpacityToken);
+
+    VtFloatArray opacity;
+    opacityAttribute.Get(&opacity);
+    VtFloatArray expectedOpacity { 1.f, 1.f, 1.f, 1.f, 1.f, 1.f };
+    EXPECT_EQ(opacity, expectedOpacity);
+
+    // Confirm displayColor has been applied
+    const TfToken displayColorToken("primvars:displayColor");
+    UsdAttribute  colorAttribute = geomPrim.GetAttribute(displayColorToken);
+
+    VtVec3fArray color;
+    colorAttribute.Get(&color);
+    VtVec3fArray expectedColor {
+        GfVec3f(0.2f), GfVec3f(0.2f),          GfVec3f(0.2f),
+        GfVec3f(0.2f), GfVec3f(0.f, 0.f, 1.f), GfVec3f(0.2f),
+    };
+    EXPECT_EQ(color, expectedColor);
+}
+
 TEST(DiffPrimVar, diffGeomNormals)
 {
     MFileIO::newFile(true);