GU_AgentBlendShapeDeformer.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.
 *
 */

#ifndef __GU_AgentBlendShapeDeformer__
#define __GU_AgentBlendShapeDeformer__

#include "GU_API.h"

#include "GU_Agent.h"
#include "GU_AgentShapeDeformer.h"

#include <UT/UT_Span.h>

/// Blendshape deformer for agents. Optionally, skinning can be performed
/// afterwards via GU_AgentLinearSkinDeformer.
class GU_API GU_AgentBlendShapeDeformer : public GU_AgentShapeDeformer
{
public:
    GU_AgentBlendShapeDeformer(
        const GU_AgentShapeDeformerConstPtr &post_blend_deformer);

    void
    deform(GU_Detail &gdp, const GU_AgentShapeLib::Shape &src_shape,
           exint xform_idx, const GU_Agent &src_agent) const override;

    /// Variant of the default deform() method which allows overriding the
    /// agent's channel values.
    void deform(
            GU_Detail &gdp,
            const GU_AgentShapeLib::Shape &src_shape,
            exint xform_idx,
            const GU_Agent &src_agent,
            const UT_Span<const GU_Agent::FloatType> &channel_values) const;

    void
    computeBounds(UT_BoundingBox &box, const GU_AgentShapeLib::Shape &src_shape,
                  exint xform_idx, const GU_Agent &src_agent) const override;

    const GU_AgentShapeDeformerConstPtr &postBlendDeformer() const
    {
        return myPostBlendDeformer;
    }

private:
    GU_AgentShapeDeformerConstPtr myPostBlendDeformer;
};

#endif