SOP/SOP_HOM.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Side Effects Software Inc
 *      123 Front Street West, Suite 1401
 *      Toronto, Ontario
 *      Canada   M5J 2M2
 *      416-504-9876
 *
 * COMMENTS:
 *      This is the base class for all SOPs that use HOM to cook.
 */

#ifndef __SOP_HOM_h__
#define __SOP_HOM_h__

#include "SOP_API.h"
#include "SOP_Node.h"

class SOP_API SOP_HOM : public SOP_Node
{
public:
    SOP_HOM(
        OP_Network *network, const char *name, OP_Operator *script_op_type);

    // Returns whether or not this sop is currently cooking.  It's used
    // by HOM to decide if this node's geometry may be modified.
    bool                 isCooking() const { return myIsCooking; }

    // When this sop cooks, it first duplicates its input geometry and then
    // runs a Python script.  This method is used by HOM to get the detail
    // handle for this sop when it is cooking.
    GU_DetailHandle     &getDetailHandle() { return myGdpHandle; }

    virtual OP_ERROR     cookMySop(OP_Context &context);

    // Call these methods from cookWithHOM() to set or clear the current point/
    // primitive/vertex.  This point/primitive/vertex determines the value of
    // expressions inside parameters like $PT, $PR, hou.SopNode.curPoint, etc. 
    void setCurPoint(GEO_Point *point)
        { myCurPt[0] = point; }
    void setCurPrim(GEO_Primitive *prim)
        { myCurPrim[0] = prim; }
    void setCurVertex(GEO_Vertex *vertex, int vertex_num)
        { myCurVtx[0] = vertex; myCurVtxNum[0] = vertex_num; }

protected:
    virtual void         cookWithHOM() = 0;

private:
    bool myIsCooking;
};

#endif

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