110 lines
2.3 KiB
Text
110 lines
2.3 KiB
Text
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file baseParticleRenderer.I
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* @author charles
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* @date 2000-06-20
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*/
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/**
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* Query the geomnode pointer
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*/
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INLINE GeomNode *BaseParticleRenderer::
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get_render_node() const {
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return _render_node;
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}
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/**
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* Query the geomnode pointer
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*/
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INLINE NodePath BaseParticleRenderer::
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get_render_node_path() const {
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return _render_node_path;
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}
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/**
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*/
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INLINE void BaseParticleRenderer::
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set_alpha_mode(BaseParticleRenderer::ParticleRendererAlphaMode am) {
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update_alpha_mode(am);
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init_geoms();
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}
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/**
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*/
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INLINE BaseParticleRenderer::ParticleRendererAlphaMode BaseParticleRenderer::
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get_alpha_mode() const {
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return _alpha_mode;
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}
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/**
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* sets alpha for "user" alpha mode
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*/
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INLINE void BaseParticleRenderer::
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set_user_alpha(PN_stdfloat ua) {
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_user_alpha = ua;
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}
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/**
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* gets alpha for "user" alpha mode
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*/
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INLINE PN_stdfloat BaseParticleRenderer::
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get_user_alpha() const {
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return _user_alpha;
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}
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/**
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* sets the ColorBlendAttrib on the _render_node
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*/
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INLINE void BaseParticleRenderer::
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set_color_blend_mode(ColorBlendAttrib::Mode bm, ColorBlendAttrib::Operand oa, ColorBlendAttrib::Operand ob) {
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CPT(RenderAttrib) ra;
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if(bm == ColorBlendAttrib::M_add || bm == ColorBlendAttrib::M_subtract || bm == ColorBlendAttrib::M_inv_subtract) {
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ra = ColorBlendAttrib::make(bm,oa,ob);
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} else {
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ra = ColorBlendAttrib::make(bm);
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}
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_render_node->set_attrib(ra);
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return;
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}
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/**
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* Returns the "ignore scale" flag. See set_ignore_scale().
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*/
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INLINE bool BaseParticleRenderer::
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get_ignore_scale() const {
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return _ignore_scale;
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}
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/**
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* gets current alpha for a particle
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*/
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INLINE PN_stdfloat BaseParticleRenderer::
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get_cur_alpha(BaseParticle* bp) {
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switch(_alpha_mode) {
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case PR_ALPHA_OUT:
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return 1.0f - bp->get_parameterized_age();
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case PR_ALPHA_IN:
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return bp->get_parameterized_age();
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case PR_ALPHA_IN_OUT:
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return 2.0 * std::min(bp->get_parameterized_age(),
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1.0f - bp->get_parameterized_age());
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case PR_ALPHA_USER:
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return _user_alpha;
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default:
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return 1.0; // should not get here
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}
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}
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