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vrld
71317c4359
A Geometry is a collection of vertices describing a non self-intersecting
(simple) polygon. In addition to screen coordinates, the vertices have
attributes for texture coordinates (s,t) and color (r,g,b,a).
It can be used as a quad, to display distorted images, or anything in between.
Added:
^^^^^^
-- geometry from table, where table has the format:
-- info = {
-- {x,y, s,t, [r = 255, g = 255, b = 255, a = 255]}
-- {x,y, s,t, [r = 255, g = 255, b = 255, a = 255]}
-- ...
-- }
geom = love.graphics.newGeometry(info)
-- convenience wrapper for quads (same as before)
geom = love.graphics.newQuad(x,y, w,h, sw,sh)
-- retrieve vertex i (1-indexed)
x,y,s,t,r,g,b,a = geom:getVertex(i)
-- set vertex i (1-indexed)
geom:setVertex(i, x,y, s,t, [r,g,b,a])
-- flip geometry
geom:flip(x, y)
Renamed:
^^^^^^^^
love.graphics.drawq() -> love.graphics.drawg()
Removed:
^^^^^^^^
quad:setViewport()
quad:getViewport()
116 lines
3.0 KiB
C++
116 lines
3.0 KiB
C++
/**
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* Copyright (c) 2006-2013 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#ifndef LOVE_MATH_H
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#define LOVE_MATH_H
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#include <climits> // for CHAR_BIT
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#include <cstdlib> // for rand() and RAND_MAX
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/* Definitions of useful mathematical constants
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* M_E - e
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* M_LOG2E - log2(e)
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* M_LOG10E - log10(e)
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* M_LN2 - ln(2)
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* M_LN10 - ln(10)
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* M_PI - pi
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* M_PI_2 - pi/2
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* M_PI_4 - pi/4
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* M_1_PI - 1/pi
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* M_2_PI - 2/pi
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* M_2_SQRTPI - 2/sqrt(pi)
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* M_SQRT2 - sqrt(2)
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* M_SQRT1_2 - 1/sqrt(2)
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*/
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#define LOVE_M_E 2.71828182845904523536
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#define LOVE_M_LOG2E 1.44269504088896340736
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#define LOVE_M_LOG10E 0.434294481903251827651
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#define LOVE_M_LN2 0.693147180559945309417
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#define LOVE_M_LN10 2.30258509299404568402
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#define LOVE_M_PI 3.14159265358979323846
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#define LOVE_M_PI_2 1.57079632679489661923
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#define LOVE_M_PI_4 0.785398163397448309616
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#define LOVE_M_1_PI 0.318309886183790671538
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#define LOVE_M_2_PI 0.636619772367581343076
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#define LOVE_M_2_SQRTPI 1.12837916709551257390
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#define LOVE_M_SQRT2 1.41421356237309504880
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#define LOVE_M_SQRT1_2 0.707106781186547524401
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#define LOVE_M_TORAD (float)(LOVE_M_PI/180.0)
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#define LOVE_M_TODEG (float)(180.0/LOVE_M_PI)
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#define LOVE_TORAD(x) (float)(x*LOVE_M_TORAD)
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#define LOVE_TODEG(x) (float)(x*LOVE_M_TODEG)
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namespace love
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{
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struct vertex
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{
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vertex()
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: r(255), g(255), b(255), a(255)
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, x(0), y(0)
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, s(0), t(0)
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{}
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vertex(float x, float y,
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float s, float t)
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: r(255), g(255), b(255), a(255)
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, x(x), y(y)
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, s(s), t(t)
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{}
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vertex(float x, float y,
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float s, float t,
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unsigned char r, unsigned char g, unsigned char b, unsigned char a)
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: r(r), g(g), b(b), a(a)
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, x(x), y(y)
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, s(s), t(t)
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{}
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unsigned char r, g, b, a;
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float x, y;
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float s, t;
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};
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struct Triangle
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{
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Triangle(const vertex &x, const vertex &y, const vertex &z)
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: a(x), b(y), c(z)
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{}
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vertex a, b, c;
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};
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inline int next_p2(int x)
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{
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x += (x == 0);
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x--;
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for (unsigned int i = 1; i < sizeof(int)*CHAR_BIT; i <<= 1) x |= x >> i;
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return ++x;
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}
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inline float next_p2(float x)
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{
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return static_cast<float>(next_p2(static_cast<int>(x)));
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}
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} // love
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#endif // LOVE_MATH_H
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