371 lines
7.8 KiB
C++
371 lines
7.8 KiB
C++
/*************************************************************************/
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/* cp_envelope.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "cp_envelope.h"
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CPEnvelope::CPEnvelope() {
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reset();
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}
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void CPEnvelope::reset() {
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on=false;
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carry=false;
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loop_on=false;
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loop_begin_node=0;
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loop_end_node=0;
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sustain_loop_on=false;
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sustain_loop_begin_node=0;
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sustain_loop_end_node=0;
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node_count=0;
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}
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int CPEnvelope::get_height_at_pos(int pos) {
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if (node_count && pos>node[node_count-1].tick_offset)
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return node[node_count-1].value;
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int begin_x,begin_y;
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int end_x,end_y,xdif;
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int count=0;
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int limit=-1;
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if (node_count<2) return NO_POINT;
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while ((count<node_count) && (limit==-1)) {
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if (node[count].tick_offset>=pos) limit=count;
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count++;
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}
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if (pos==0) return node[0].value;
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if (limit==-1) return NO_POINT;
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begin_x=node[limit-1].tick_offset;
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end_x=node[limit].tick_offset;
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begin_y=node[limit-1].value;
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end_y=node[limit].value;
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xdif=end_x-begin_x;
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return begin_y+((pos-begin_x)*(end_y-begin_y))/(xdif?xdif:1);
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}
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/*
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int CPEnvelope::get_fx_height_at_pos(int pos) {
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if (node_count && pos>node[node_count-1].tick_offset)
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return node[node_count-1].value<<FX_HEIGHT_BITS;
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int begin_x,begin_y;
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int end_x,end_y,xdif;
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int count=0;
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int limit=-1;
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if (node_count<2) return NO_POINT;
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while ((count<node_count) && (limit==-1)) {
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if (node[count].tick_offset>=pos) limit=count;
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count++;
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}
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if (pos==0) return node[0].value<<FX_HEIGHT_BITS;
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if (limit==-1) return NO_POINT;
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begin_x=node[limit-1].tick_offset;
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end_x=node[limit].tick_offset;
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begin_y=node[limit-1].value;
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end_y=node[limit].value;
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xdif=end_x-begin_x;
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return (begin_y<<FX_HEIGHT_BITS)+((pos-begin_x)*(end_y-begin_y)*(int)(1<<FX_HEIGHT_BITS))/(xdif?xdif:1);
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}
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*/
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float CPEnvelope::get_interp_height_at_pos(float pos) {
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if (node_count && pos>node[node_count-1].tick_offset)
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return node[node_count-1].value;
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int begin_x,begin_y;
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int end_x,end_y,xdif;
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int count=0;
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int limit=-1;
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if (node_count<2) return NO_POINT;
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while ((count<node_count) && (limit==-1)) {
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if (node[count].tick_offset>=pos) limit=count;
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count++;
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}
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if (pos==0) return node[0].value;
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if (limit==-1) return NO_POINT;
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begin_x=node[limit-1].tick_offset;
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end_x=node[limit].tick_offset;
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begin_y=node[limit-1].value;
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end_y=node[limit].value;
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xdif=end_x-begin_x;
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return begin_y+((pos-begin_x)*(end_y-begin_y))/(xdif?xdif:1);
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}
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void CPEnvelope::set_position(int p_node,int p_x,int p_y) {
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if (p_node>=node_count) return;
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if (p_node==0) {
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p_x=0;
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} else if (p_x<=node[p_node-1].tick_offset) {
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p_x=node[p_node-1].tick_offset+1;
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} else if ((p_node<(node_count-1)) && (p_x>=node[p_node+1].tick_offset)) {
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p_x=node[p_node+1].tick_offset-1;
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}
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if (p_x>=9999) p_x=9999;
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if (p_y>max_value) p_y=max_value;
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if (p_y<min_value) p_y=min_value;
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node[p_node].tick_offset=p_x;
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node[p_node].value=p_y;
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}
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int CPEnvelope::add_position(int p_x,int p_y,bool p_move_loops) {
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if (node_count==MAX_POINTS) return -1;
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int i,new_node;
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// if this is assigning an existing node, let's quit.
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for (i=0;i<node_count;i++) if (p_x==node[i].tick_offset) return -1;
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i=0;
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while ((i<node_count) && (p_x>=node[i].tick_offset)) i++;
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new_node=i;
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node_count++;
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if (p_move_loops) {
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if (loop_begin_node>=new_node) loop_begin_node++;
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if (loop_end_node>=new_node) loop_end_node++;
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if (sustain_loop_begin_node>=new_node) sustain_loop_begin_node++;
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if (sustain_loop_end_node>=new_node) sustain_loop_end_node++;
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}
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for (i=node_count-1;i>new_node;i--) node[i]=node[i-1];
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set_position(new_node,p_x,p_y);
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return new_node;
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}
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void CPEnvelope::set_loop_begin(int pos) {
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if ((pos<0) || (pos>=node_count)) return;
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loop_begin_node=pos;
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if (loop_end_node<loop_begin_node) loop_end_node=loop_begin_node;
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}
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void CPEnvelope::set_loop_end(int pos) {
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if ((pos<0) || (pos>=node_count)) return;
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loop_end_node=pos;
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if (loop_end_node<loop_begin_node) loop_begin_node=loop_end_node;
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}
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void CPEnvelope::set_sustain_loop_begin(int pos) {
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if ((pos<0) || (pos>=node_count)) return;
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sustain_loop_begin_node=pos;
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if (sustain_loop_end_node<sustain_loop_begin_node) sustain_loop_end_node=sustain_loop_begin_node;
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}
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void CPEnvelope::set_sustain_loop_end(int pos) {
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if ((pos<0) || (pos>=node_count)) return;
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sustain_loop_end_node=pos;
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if (sustain_loop_end_node<sustain_loop_begin_node) sustain_loop_begin_node=sustain_loop_end_node;
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}
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void CPEnvelope::set_loop_enabled(bool p_enabled) {
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loop_on=p_enabled;
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}
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bool CPEnvelope::is_loop_enabled() {
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return loop_on;
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}
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void CPEnvelope::set_sustain_loop_enabled(bool p_enabled) {
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sustain_loop_on=p_enabled;
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}
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bool CPEnvelope::is_sustain_loop_enabled() {
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return sustain_loop_on;
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}
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void CPEnvelope::del_position(int p_node) {
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if ((node_count<3) || (p_node<=0) || (p_node>=node_count)) return;
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int i;
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if (loop_begin_node>=p_node) loop_begin_node--;
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if (loop_end_node>=p_node) loop_end_node--;
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if (sustain_loop_begin_node>=p_node) sustain_loop_begin_node--;
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if (sustain_loop_end_node>=p_node) sustain_loop_end_node--;
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for (i=p_node;i<node_count-1;i++) node[i]=node[i+1];
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node_count--;
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}
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uint8_t CPEnvelope::get_loop_begin() {
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return loop_begin_node;
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}
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uint8_t CPEnvelope::get_loop_end() {
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return loop_end_node;
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}
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uint8_t CPEnvelope::get_sustain_loop_begin() {
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return sustain_loop_begin_node;
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}
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uint8_t CPEnvelope::get_sustain_loop_end() {
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return sustain_loop_end_node;
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}
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void CPEnvelope::set_enabled(bool p_enabled) {
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on=p_enabled;
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}
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bool CPEnvelope::is_enabled() {
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return on;
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}
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void CPEnvelope::set_carry_enabled(bool p_enabled) {
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carry=p_enabled;
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}
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bool CPEnvelope::is_carry_enabled() {
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return carry;
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}
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uint8_t CPEnvelope::get_node_count() {
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return node_count;
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}
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const CPEnvelope::Point& CPEnvelope::get_node(int p_idx) {
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static Point errpoint;
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if (p_idx<0 || p_idx>=node_count)
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return node[node_count-1];
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return node[p_idx];
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}
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