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70 lines
2.5 KiB
70 lines
2.5 KiB
14 years ago
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/*
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* Copyright (c) 2006 Boudewijn Rempt (boud@valdyas.org)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef KIS_SUBSTRATE_H
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#define KIS_SUBSTRATE_H
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#include <tqrect.h>
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#include <ksharedptr.h>
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class KisImage;
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/// All values are normalized to a range between 0 and 1.
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/// XXX: Do we need more?
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struct KisSubstratePixel {
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float height; // absolute height of the current position
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float smoothness; // determines how easily the painting tool "slips" over the surface
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float absorbency; // determines how much wetness the substrate can absorb. XXX: How about speed of absorbing?
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float r; //.Red component of reflectivity
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float g; // Green component of reflectivity
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float b; // Blue component of reflectivity
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float transmittance; // Similar to alpha. XXX: Ask Leonardo about this.
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};
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/**
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* This abstract class defines the properties of a substrate -- that is, the simulation
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* of the paper or canvas for natural media.
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*
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* Subclass this interface to define a specific type of substrate: repeating,
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* or full-size, with specific and cool ways of generating the surface, or
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* maybe based on scans of real substrates.
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*/
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class KisSubstrate : public KShared {
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public:
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KisSubstrate(KisImage * /*img*/) : KShared() {};
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virtual ~KisSubstrate() {};
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/**
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* Copy the pixel values in the specified rect into an array of Substrate.
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* Make sure the array is big enough!
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*/
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virtual void getPixels(KisSubstratePixel * /*substrate*/, const TQRect & /*rc*/) = 0;
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/**
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* Return a pointer to the substrate at the specified position. Note that
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* you cannot do pointe arithmetic with this value: the position of the
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* neighbouring pixels cannot be determined from this value
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*/
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virtual KisSubstratePixel * getPixel(uint x, uint y) = 0;
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};
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#endif
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