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annotate mde/types/Colour.d @ 90:b525ff28774b

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Widgets generated dynamically from a list can now be standard widgets selected from data files. Started on allowing alignment to be shared between instances of a layout widget in a dynamic list (to allow column alignment of list's rows).
author Diggory Hardy <diggory.hardy@gmail.com>
date Wed, 01 Oct 2008 23:37:51 +0100
parents 66d555da083e
children 4d5d53e4f881
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1 /* LICENSE BLOCK
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2 Part of mde: a Modular D game-oriented Engine
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3 Copyright © 2007-2008 Diggory Hardy
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4
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5 This program is free software: you can redistribute it and/or modify it under the terms
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6 of the GNU General Public License as published by the Free Software Foundation, either
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7 version 2 of the License, or (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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10 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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11 See the GNU General Public License for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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16 /** Contains a basic colour type. */
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17 module mde.types.Colour;
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18
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19 /// Represent a colour using clamped floats
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20 struct Colour {
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21 /// Returns GL_ONE if total value is nearer white than black, else GL_ZERO.
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22 uint nearestGLConst () {
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23 return r+g+b >= 1.5f ? 1u : 0u;
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24 }
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26 float r,g,b; /// values
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28 static {
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29 /// Predefined colours
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30 const Colour WHITE = { r:1f, g:1f, b:1f };
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31 const Colour BLACK = { r:0f, g:0f, b:0f }; /// ditto
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32
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33 /// Construct from floats (doesn't clamp, but GL does when values are passed)
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34 Colour opCall (float r, float g, float b) {
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35 Colour c;
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36 c.r = r;
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37 c.g = g;
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38 c.b = b;
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39 return c;
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40 }
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41 /// Construct from ubytes
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42 Colour opCall (ubyte r, ubyte g, ubyte b) {
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43 Colour c;
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44 c.r = cast(float) r / 255f;
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45 c.g = cast(float) g / 255f;
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46 c.b = cast(float) b / 255f;
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47 return c;
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48 }
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49 /// Construct from 0xRRGGBB
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50 Colour opCall (int col) {
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51 Colour c;
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52 c.r = cast(float) (col >> 16u) / 255f;
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53 c.g = cast(float) (col >> 8u) / 255f;
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54 c.b = cast(float) col / 255f;
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55 return c;
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56 }
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57 }
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58 }