samples/POP/POP_SpotLight.h

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/*
 * Copyright (c) 2012
 *      Side Effects Software Inc.  All rights reserved.
 *
 * Redistribution and use of Houdini Development Kit samples in source and
 * binary forms, with or without modification, are permitted provided that the
 * following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. The name of Side Effects Software may not be used to endorse or
 *    promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY SIDE EFFECTS SOFTWARE `AS IS' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 * NO EVENT SHALL SIDE EFFECTS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *----------------------------------------------------------------------------
 */

#ifndef __POP_SpotLight_h__
#define __POP_SpotLight_h__

// If the POP is allowed to access the local variables defined for 
// particles, need to use the POP_LocalVar class.
#include <POP/POP_LocalVar.h>

namespace HDK_Sample {

enum POP_SpotLightIndex
{
    ISL_ACTIVATE,
    ISL_SOURCE,
    ISL_CENTER
};

class POP_SpotLight : public POP_LocalVar
{
public:

    static OP_Node*     myConstructor   (OP_Network* net, const char* name, 
                                         OP_Operator* entry);

    static PRM_Template         myTemplateList[];
    static OP_TemplatePair      myTemplatePair;
    static OP_VariablePair      myVariablePair;

protected:
             POP_SpotLight (OP_Network* net, const char* name, 
                            OP_Operator* entry);
    virtual ~POP_SpotLight (void);

    virtual OP_ERROR    cookPop         (OP_Context &context);
    virtual void        addAttrib       (void* userdata);

private:

    float  ACTIVATE (float t) { FLOAT_PARM("activate", ISL_ACTIVATE, 0, t) };
    void   SOURCE  (UT_String &s) { STR_PARM("source", ISL_SOURCE, 0, 0) };
    float  CENTERX (float t) { FLOAT_PARM("center", ISL_CENTER, 0, t) };
    float  CENTERY (float t) { FLOAT_PARM("center", ISL_CENTER, 1, t) };
    float  CENTERZ (float t) { FLOAT_PARM("center", ISL_CENTER, 2, t) };

    // Variables that are evaluated per particle need to have these
    // definitions.
    POP_FPARM(myCenterX, getCenterX);
    POP_FPARM(myCenterY, getCenterY);
    POP_FPARM(myCenterZ, getCenterZ);

    static int* myIndirect;

    void        changePoint (GEO_Point* ppt, POP_ContextData* data, float t,
                             POP_FParam centerx, POP_FParam centery,
                             POP_FParam centerz);
};

}       // End HDK_Sample namespace

#undef FLOAT_PARM
#undef INT_PARM
#undef STR_PARM
#undef STR_PARM_NE

#endif

---