How to draw lines in Qt3D
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how do I draw lines instead of solid quad in Qt3d.
I want to use a sceneNode->draw( painter )...
but sceneNode->setDrawingMode(QGL::Lines) doesn't seem to do anything...
Looking at example code below, how would I get it to draw lines?
@
float vertices[12] =
{
-1.0, -1.0, -1.0, // A
1.0, -1.0, -1.0, // B
1.0, 1.0, 1.0, // C
-1.0, 1.0, 1.0 // D
};
QGLBuilder quad;
QGeometryData data;
data.appendVertexArray(QArray<QVector3D>::fromRawData(
reinterpret_cast<const QVector3D*>(vertices), 4));
quad.addQuads(data);
@ -
OK, still no luck, reverting to openGL only and all I have are black lines...
@
void CubeView::drawGrid()
{
int loop1, loop2;
const int gridSize = 31;glColor3f(1.0,0.50,0.50); // Set my lines colour... glLineWidth(2.0); glDisable(GL_LINE_SMOOTH); for ( loop1 =0; loop1<gridSize; loop1++) { for ( loop2=0; loop2<21; loop2++) { // Draw Horizontal lines... if ( loop1<gridSize-1) { glBegin(GL_LINES); glVertex3f(-40+(loop1*5),0.0,-40+(loop2*5)); glVertex3f(40+(loop1*5),0.0,-40+(loop2*5)); glEnd(); } // Draw vertical lines... if (loop2<gridSize-1) { glBegin(GL_LINES); glVertex3f(-40+(loop1*5),0.0,-40+(loop2*5)); glVertex3f(-40+(loop1*5),0.0,40+(loop2*5)); glEnd(); } } } glFlush();
}
@What am I missing to get coloured lines????