75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
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/**
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* projectM -- Milkdrop-esque visualisation SDK
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* Copyright (C)2003-2004 projectM Team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* See 'LICENSE.txt' included within this release
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <iostream>
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#include "fatal.h"
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#include "Common.hpp"
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#include "Expr.hpp"
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#include "Eval.hpp"
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#include "Param.hpp"
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#include "PerPixelEqn.hpp"
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#include <map>
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#include "wipemalloc.h"
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#include <cassert>
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/* Evaluates a per pixel equation */
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void PerPixelEqn::evaluate(int mesh_i, int mesh_j) {
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GenExpr * eqn_ptr = 0;
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eqn_ptr = this->gen_expr;
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float ** param_matrix = (float**)this->param->matrix;
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if (param_matrix == 0) {
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assert(param->engine_val);
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(*(float*)param->engine_val) = eqn_ptr->eval_gen_expr(mesh_i, mesh_j);
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} else {
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assert(!(eqn_ptr == NULL || param_matrix == NULL));
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param_matrix[mesh_i][mesh_j] = eqn_ptr->eval_gen_expr(mesh_i, mesh_j);
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/* Now that this parameter has been referenced with a per
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pixel equation, we let the evaluator know by setting
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this flag */
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/// @bug review and verify this behavior
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param->matrix_flag = true;
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param->flags |= P_FLAG_PER_PIXEL;
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}
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}
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PerPixelEqn::PerPixelEqn(int _index, Param * _param, GenExpr * _gen_expr):index(_index), param(_param), gen_expr(_gen_expr) {
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assert(index >= 0);
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assert(param != 0);
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assert(gen_expr != 0);
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}
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