dashed lines qtquickgeometry

hanzolem

So, guys. I'm developing 3d viewer app. I need to enable dashed lines view of model. How can I do this?

Now I have this code for solid lines -

 if (lineTypeFlag == 0) {
        setPrimitiveType(QQuick3DGeometry::PrimitiveType::Lines);
        t.resize(line.over_mem * sizeof(Line));
        memcpy(t.data(), line.arr, line.over_mem * sizeof(Line));
    }

            Model {
                id: bunny
                position: Qt.vector3d(14, 0, 0)
                geometry: model_context

                y: -100
//                scale: Qt.vector3d(15, 15, 15)
                property variant material
                property bool animate: true

                materials: [ DefaultMaterial {
//                          pointSize : 10 
                        diffuseColor: model_dialog.color
                        lighting: DefaultMaterial.NoLighting
                        cullMode: DefaultMaterial.NoCulling
//                        diffuseMap: cbTexture.checked ? baseColorMap : null
                        specularAmount: 0.5
                    }
                ]
            }

hanzolem

and may be you can help me. When i display model as point cloud i can see points as a cubes(squares), but i want as a spheres(circles). How can I do this?

johngod

Hi
The easy solution for dashed lines is to apply a texture to your line, where the texture data has two colors, one being equal to the background color. I have done this, check here:
https://bitbucket.org/joaodeusmorgado/techdrawstudio/src/master/qml/qmlEntities/Line_dashed.qml
where the texture data is defined here https://bitbucket.org/joaodeusmorgado/techdrawstudio/src/master/entities/linetexture.cpp

Other option is to play around with shaders and discard some pixels of the line, making a dashed pattern.

Regardin the squares, maybe you can use their coordinates and display there a Model with geometry source set to #Sphere ?