rs_creation.cpp

qcad2.05可用于windows和linux的源码

                minDist = dist;
                idx = i;
            }
        }
    }

    if (idx!=-1) {
        RS_LineData d = poss[idx]->getData();
        for (int i=0; i<4; ++i) {
            if (poss[i]!=NULL) {
                delete poss[i];
            }
        }

        if (document!=NULL && handleUndo) {
            document->startUndoCycle();
        }

        ret = new RS_Line(container, d);
        ret->setLayerToActive();
        ret->setPenToActive();
        if (container!=NULL) {
            container->addEntity(ret);
        }
        if (document!=NULL && handleUndo) {
            document->addUndoable(ret);
            document->endUndoCycle();
        }
        if (graphicView!=NULL) {
            graphicView->drawEntity(ret);
        }
    } else {
        ret = NULL;
    }

    return ret;
}


/**
 * Creates a line with a relative angle to the given entity.
 *
 * @param coord Coordinate to define the point where the line should end.
 *              (typically a mouse coordinate).
 * @param entity Pointer to basis entity. The angle is relative to the 
 *               angle of this entity.
 * @param angle Angle of the line relative to the angle of the basis entity.
 * @param length Length of the line we're creating.
 */
RS_Line* RS_Creation::createLineRelAngle(const RS_Vector& coord,
        RS_Entity* entity,
        double angle,
        double length) {

    // check given entity / coord:
    if (entity==NULL || !coord.valid ||
            (entity->rtti()!=RS2::EntityArc && entity->rtti()!=RS2::EntityCircle
             && entity->rtti()!=RS2::EntityLine)) {

        return NULL;
    }

    double a1=0.0;

    switch (entity->rtti()) {
    case RS2::EntityLine:
        a1 = ((RS_Line*)entity)->getAngle1();
        break;
    case RS2::EntityArc:
        a1 = ((RS_Arc*)entity)->getCenter().angleTo(coord) + M_PI/2.0;
        break;
    case RS2::EntityCircle:
        a1 = ((RS_Circle*)entity)->getCenter().angleTo(coord);
        break;
    default:
        // never reached
        break;
    }

    a1 += angle;

    RS_Vector v1;
    v1.setPolar(length, a1);
    //RS_ConstructionLineData(coord-v1, coord+v1);
    RS_LineData d(coord-v1, coord+v1);
    RS_Line* ret;

    if (document!=NULL && handleUndo) {
        document->startUndoCycle();
    }

    ret = new RS_Line(container, d);
    ret->setLayerToActive();
    ret->setPenToActive();
    if (container!=NULL) {
        container->addEntity(ret);
    }
    if (document!=NULL && handleUndo) {
        document->addUndoable(ret);
        document->endUndoCycle();
    }
    if (graphicView!=NULL) {
        graphicView->drawEntity(ret);
    }

    return ret;
}


/**
 * Creates a polygon with 'number' edges.
 *
 * @param center Center of the polygon.
 * @param corner The first corner of the polygon
 * @param number Number of edges / corners.
 */
RS_Line* RS_Creation::createPolygon(const RS_Vector& center,
                                    const RS_Vector& corner,
                                    int number) {

    // check given coords / number:
    if (!center.valid || !corner.valid || number<3) {
        return NULL;
    }

    RS_Line* ret = NULL;

    if (document!=NULL && handleUndo) {
        document->startUndoCycle();
    }

    RS_Vector c1(false);
    RS_Vector c2 = corner;
    RS_Line* line;

    for (int n=1; n<=number; ++n) {
        c1 = c2;
        c2 = c2.rotate(center, (M_PI*2)/number);

        line = new RS_Line(container, RS_LineData(c1, c2));
        line->setLayerToActive();
        line->setPenToActive();

        if (ret==NULL) {
            ret = line;
        }

        if (container!=NULL) {
            container->addEntity(line);
        }
        if (document!=NULL && handleUndo) {
            document->addUndoable(line);
        }
        if (graphicView!=NULL) {
            graphicView->drawEntity(line);
        }
    }

    if (document!=NULL && handleUndo) {
        document->endUndoCycle();
    }

    return ret;
}



/**
 * Creates a polygon with 'number' edges.
 *
 * @param corner1 The first corner of the polygon.
 * @param corner2 The second corner of the polygon.
 * @param number Number of edges / corners.
 */
RS_Line* RS_Creation::createPolygon2(const RS_Vector& corner1,
                                     const RS_Vector& corner2,
                                     int number) {

    // check given coords / number:
    if (!corner1.valid || !corner2.valid || number<3) {
        return NULL;
    }

    RS_Line* ret = NULL;

    if (document!=NULL && handleUndo) {
        document->startUndoCycle();
    }

    double len = corner1.distanceTo(corner2);
    double ang1 = corner1.angleTo(corner2);
    double ang = ang1;

    RS_Vector c1(false);
    RS_Vector c2 = corner1;
    RS_Vector edge;
    RS_Line* line;

    for (int n=1; n<=number; ++n) {
        c1 = c2;
        edge.setPolar(len, ang);
        c2 = c1 + edge;

        line = new RS_Line(container, RS_LineData(c1, c2));
        line->setLayerToActive();
        line->setPenToActive();

        if (ret==NULL) {
            ret = line;
        }

        if (container!=NULL) {
            container->addEntity(line);
        }
        if (document!=NULL && handleUndo) {
            document->addUndoable(line);
        }
        if (graphicView!=NULL) {
            graphicView->drawEntity(line);
        }

        // more accurate than incrementing the angle:
        ang = ang1 + (2*M_PI)/number*n;
    }

    if (document!=NULL && handleUndo) {
        document->endUndoCycle();
    }

    return ret;
}



/**
 * Creates an insert with the given data.
 *
 * @param data Insert data (position, block name, ..)
 */
RS_Insert* RS_Creation::createInsert(RS_InsertData& data) {

    RS_DEBUG->print("RS_Creation::createInsert");

    if (document!=NULL && handleUndo) {
        document->startUndoCycle();
    }

    RS_Insert* ins = new RS_Insert(container, data);
    // inserts are also on layers
    ins->setLayerToActive();
    ins->setPenToActive();

    if (container!=NULL) {
        container->addEntity(ins);
    }
    if (document!=NULL && handleUndo) {
        document->addUndoable(ins);
        document->endUndoCycle();
    }
    if (graphicView!=NULL) {
        graphicView->drawEntity(ins);
    }

    RS_DEBUG->print("RS_Creation::createInsert: OK");

    return ins;
}



/**
 * Creates an image with the given data.
 */
RS_Image* RS_Creation::createImage(RS_ImageData& data) {

    if (document!=NULL && handleUndo) {
        document->startUndoCycle();
    }

    RS_Image* img = new RS_Image(container, data);
    img->setLayerToActive();
    img->setPenToActive();
    img->update();

    if (container!=NULL) {
        container->addEntity(img);
    }
    if (document!=NULL && handleUndo) {
        document->addUndoable(img);
        document->endUndoCycle();
    }
    if (graphicView!=NULL) {
        graphicView->drawEntity(img);
    }

    return img;
}


/**
 * Creates a new block from the currently selected entitiies.
 *
 * @param referencePoint Reference point for the block.
 * @param name Block name
 * @param remove true: remove existing entities, false: don't touch entities
 */
RS_Block* RS_Creation::createBlock(const RS_BlockData& data,
                                   const RS_Vector& referencePoint,
                                   const bool remove) {

    // start undo cycle for the container if we're deleting the existing entities
    if (remove && document!=NULL) {
        document->startUndoCycle();
    }

    RS_Block* block =
        new RS_Block(container,
                     RS_BlockData(data.name, data.basePoint, data.frozen));

    // copy entities into a block
    for (RS_Entity* e=container->firstEntity();
            e!=NULL;
            e=container->nextEntity()) {
        //for (uint i=0; i<container->count(); ++i) {
        //RS_Entity* e = container->entityAt(i);

        if (e!=NULL && e->isSelected()) {

            // delete / redraw entity in graphic view:
            if (remove) {
                if (graphicView!=NULL) {
                    graphicView->deleteEntity(e);
                }
                e->setSelected(false);
            } else {
                if (graphicView!=NULL) {
                    graphicView->deleteEntity(e);
                }
                e->setSelected(false);
                if (graphicView!=NULL) {
                    graphicView->drawEntity(e);
                }
            }

            // add entity to block:
            RS_Entity* c = e->clone();
            c->move(-referencePoint);
            block->addEntity(c);

            if (remove) {
                //container->removeEntity(e);
                //i=0;
                e->changeUndoState();
                if (document!=NULL) {
                    document->addUndoable(e);
                }
            }
        }
    }

    if (remove && document!=NULL) {
        document->endUndoCycle();
    }

    if (graphic!=NULL) {
        graphic->addBlock(block);
    }

    return block;
}



/**
 * Inserts a library item from the given path into the drawing.
 */
RS_Insert* RS_Creation::createLibraryInsert(RS_LibraryInsertData& data) {

    RS_DEBUG->print("RS_Creation::createLibraryInsert");

    RS_Graphic g;
    if (!g.open(data.file, RS2::FormatUnknown)) {
        RS_DEBUG->print(RS_Debug::D_WARNING,
			"RS_Creation::createLibraryInsert: Cannot open file: %s");
        return NULL;
    }

    // unit conversion:
    if (graphic!=NULL) {
        double uf = RS_Units::convert(1.0, g.getUnit(),
                                      graphic->getUnit());
        g.scale(RS_Vector(0.0, 0.0), RS_Vector(uf, uf));
    }

    //g.scale(RS_Vector(data.factor, data.factor));
    //g.rotate(data.angle);

    RS_String s;
#if QT_VERSION>=0x030000

    s = RS_FileInfo(data.file).baseName(true);
#else

    s = data.file.left(data.file.length()-4);
#endif

    RS_Modification m(*container, graphicView);
    m.paste(
        RS_PasteData(
            data.insertionPoint,
            data.factor, data.angle, true,
            s),
        &g);

    RS_DEBUG->print("RS_Creation::createLibraryInsert: OK");

    return NULL;
}

// EOF