#include <c4d_baselist.h>

详细描述

Message struct for the MSG_TOOL_RESIZE message.
Sent during MMB (Middle Mouse Button) dragging and the [ and ] shortcuts with brushes if ToolAskMsgData::resize_allowed 被设为 true by the developer.
Here is an example from the Live Selection tool to show how it works:

Bool LiveSelectionTool::Message( BaseDocument *doc, BaseContainer & data , Int32 type, void *t_data) { switch (type) { case MSG_TOOL_ASK : { ToolAskMsgData *a = ( ToolAskMsgData *)t_data; a-> resize_allowed = true ; } break ; case MSG_TOOL_RESIZE : { ToolResizeData *d = ( ToolResizeData *)t_data; if (!d || !d-> data ) return false ; switch (d-> pass ) { case ToolResizeData::RESIZE_PASS_INIT : { d-> falloff . show = d-> cross_type = d-> data -> GetInt32 ( MDATA_SELECTLIVE_MODE ) != MDATA_SELECTLIVE_MODE_NORMAL ; d-> falloff . size = d-> data -> GetFloat ( MDATA_SELECTLIVE_RADIUS ); d-> falloff . opacity = d-> data -> GetFloat ( MDATA_SOFT_STRENGTH ); d-> falloff . position . off = 向量 (mousex, mousey, 0.0); } break ; case ToolResizeData::RESIZE_PASS_RESIZE : { if (d-> horizontal ) { d-> falloff . size = d-> data -> GetFloat ( MDATA_SELECTLIVE_RADIUS ); d-> falloff . size += d-> delta ; if (d-> falloff . size < 0.0) d-> falloff . size = 0.0; if (d-> falloff . size > 1000.0) d-> falloff . size = 1000.0; d-> data -> SetFloat ( MDATA_SELECTLIVE_RADIUS , d-> falloff . size ); } else { if (d-> data -> GetInt32 ( MDATA_SELECTLIVE_MODE ) == MDATA_SELECTLIVE_MODE_SOFTSELECTION ) { d-> falloff . opacity = d-> data -> GetFloat ( MDATA_SOFT_STRENGTH ); d-> falloff . opacity += Float (d-> delta ) * 0.01; d-> falloff . opacity = FCut(d-> falloff . opacity , 0.0, 1.0); d-> data -> SetFloat ( MDATA_SOFT_STRENGTH , d-> falloff . opacity ); } else { d-> falloff . opacity = d-> data -> GetFloat ( MDATA_VERTEXPAINT_STRENGTH ); d-> falloff . opacity += Float (d-> delta ) * 0.01; d-> falloff . opacity = FCut(d-> falloff . opacity , 0.0, 1.0); d-> data -> SetFloat ( MDATA_VERTEXPAINT_STRENGTH , d-> falloff . opacity ); } } } break ; default : break ; } } break ; }