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DISTRHO Plugin Framework
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DPF/tests/Color.cpp

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  1. /*

  2.  * DISTRHO Plugin Framework (DPF)

  3.  * Copyright (C) 2012-2021 Filipe Coelho <falktx@falktx.com>

  4.  *

  5.  * Permission to use, copy, modify, and/or distribute this software for any purpose with

  6.  * or without fee is hereby granted, provided that the above copyright notice and this

  7.  * permission notice appear in all copies.

  8.  *

  9.  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD

  10.  * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN

  11.  * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL

  12.  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER

  13.  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN

  14.  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

  15.  */

  16. 

  17. #include "tests.hpp"

  18. 

  19. #define DPF_TEST_COLOR_CPP

  20. #include "dgl/src/Color.cpp"

  21. 

  22. // --------------------------------------------------------------------------------------------------------------------

  23. 

  24. int main()

  25. {

  26.     USE_NAMESPACE_DGL;

  27. 

  28.     // constructor with no arguments, must give solid black

  29.     {

  30.         Color c;

  31.         DISTRHO_ASSERT_EQUAL(c.red, 0.0f, "red value is 0");

  32.         DISTRHO_ASSERT_EQUAL(c.green, 0.0f, "green value is 0");

  33.         DISTRHO_ASSERT_EQUAL(c.blue, 0.0f, "blue value is 0");

  34.         DISTRHO_ASSERT_EQUAL(c.alpha, 1.0f, "alpha value is 1");

  35.     }

  36. 

  37.     // constructor gives correct floating-point values (arguments are r, g, b, a; in order)

  38.     {

  39.         Color c(0.1f, 0.2f, 0.3f, 0.4f);

  40.         DISTRHO_ASSERT_EQUAL(c.red, 0.1f, "red value is 0.1");

  41.         DISTRHO_ASSERT_EQUAL(c.green, 0.2f, "green value is 0.2");

  42.         DISTRHO_ASSERT_EQUAL(c.blue, 0.3f, "blue value is 0.3");

  43.         DISTRHO_ASSERT_EQUAL(c.alpha, 0.4f, "alpha value is 0.4");

  44.     }

  45. 

  46.     // constructor gives correct integer values normalized to float (arguments are r, g, b, a; in order)

  47.     {

  48.         Color c(51, 102, 153);

  49.         DISTRHO_ASSERT_SAFE_EQUAL(c.red, 0.2f, "red value is 0.2 (integer 51)");

  50.         DISTRHO_ASSERT_SAFE_EQUAL(c.green, 0.4f, "green value is 0.4 (integer 102)");

  51.         DISTRHO_ASSERT_SAFE_EQUAL(c.blue, 0.6f, "blue value is 0.6 (integer 153)");

  52.         DISTRHO_ASSERT_SAFE_EQUAL(c.alpha, 1.0f, "alpha value is 1");

  53. 

  54.         Color white(255, 255, 255);

  55.         DISTRHO_ASSERT_EQUAL(white.red, 1.0f, "white's red value is 1");

  56.         DISTRHO_ASSERT_EQUAL(white.green, 1.0f, "white's green value is 1");

  57.         DISTRHO_ASSERT_EQUAL(white.blue, 1.0f, "white's blue value is 1");

  58.         DISTRHO_ASSERT_EQUAL(white.alpha, 1.0f, "white alpha value is 1");

  59.     }

  60. 

  61.     // copy colors around

  62.     {

  63.         Color black;

  64.         Color halfTransparentWhite(1.0f, 1.0f, 1.0f, 0.5f);

  65. 

  66.         // constructor copy

  67.         Color test(halfTransparentWhite);

  68.         DISTRHO_ASSERT_EQUAL(test.red, 1.0f, "copied white's red value is 1.0");

  69.         DISTRHO_ASSERT_EQUAL(test.green, 1.0f, "copied white's green value is 1");

  70.         DISTRHO_ASSERT_EQUAL(test.blue, 1.0f, "copied white's blue value is 1");

  71.         DISTRHO_ASSERT_EQUAL(test.alpha, 0.5f, "copied white's alpha value is 0.5");

  72. 

  73.         // assign operator

  74.         test = black;

  75.         DISTRHO_ASSERT_EQUAL(test.red, 0.0f, "assigned black's red value is 0");

  76.         DISTRHO_ASSERT_EQUAL(test.green, 0.0f, "assigned black's green value is 0");

  77.         DISTRHO_ASSERT_EQUAL(test.blue, 0.0f, "assigned black's blue value is 0");

  78.         DISTRHO_ASSERT_EQUAL(test.alpha, 1.0f, "assigned black's alpha value is 1");

  79.     }

  80. 

  81.     // simple color comparisons

  82.     {

  83.         Color black1, black2;

  84.         Color white(1.0f, 1.0f, 1.0f);

  85.         Color halfTransparentWhite(1.0f, 1.0f, 1.0f, 0.5f);

  86. 

  87.         // logic operators

  88.         DISTRHO_ASSERT_EQUAL(black1, black1, "color equals itself");

  89.         DISTRHO_ASSERT_EQUAL(black1, black2, "black equals black");

  90.         DISTRHO_ASSERT_NOT_EQUAL(black1, white, "black is not white");

  91.         DISTRHO_ASSERT_NOT_EQUAL(black1, halfTransparentWhite, "black is not half-transparent white");

  92.         DISTRHO_ASSERT_NOT_EQUAL(white, halfTransparentWhite, "white is not half-transparent white");

  93. 

  94.         // class functions (truthful)

  95.         DISTRHO_ASSERT_EQUAL(black1.isEqual(black1), true, "color equals itself");

  96.         DISTRHO_ASSERT_EQUAL(black1.isEqual(black2), true, "black equals black");

  97.         DISTRHO_ASSERT_EQUAL(black1.isNotEqual(white), true, "black is not white");

  98.         DISTRHO_ASSERT_EQUAL(white.isNotEqual(halfTransparentWhite), true, "white is not half-transparent white");

  99. 

  100.         // class functions (inverted)

  101.         DISTRHO_ASSERT_EQUAL(black1.isNotEqual(black1), false, "color equals itself");

  102.         DISTRHO_ASSERT_EQUAL(black1.isNotEqual(black2), false, "black equals black");

  103.         DISTRHO_ASSERT_EQUAL(black1.isEqual(white), false, "black is not white");

  104.         DISTRHO_ASSERT_EQUAL(white.isEqual(halfTransparentWhite), false, "white is not half-transparent white");

  105. 

  106.         // class functions ignoring alpha

  107.         DISTRHO_ASSERT_EQUAL(black1.isEqual(black1, false), true, "color equals itself");

  108.         DISTRHO_ASSERT_EQUAL(black1.isEqual(black2, false), true, "black equals black");

  109.         DISTRHO_ASSERT_EQUAL(black1.isNotEqual(white, false), true, "black is not white");

  110.         DISTRHO_ASSERT_EQUAL(white.isEqual(halfTransparentWhite, false), true,

  111.                              "white is half-transparent white if we ignore alpha");

  112.     }

  113. 

  114.     // TODO advanced color comparisons

  115.     {

  116.     }

  117. 

  118.     // TODO fromHSL

  119.     {

  120.     }

  121. 

  122.     // create colors from html strings

  123.     {

  124.         Color c000 = Color::fromHTML("#000");

  125.         DISTRHO_ASSERT_EQUAL(c000.red, 0.0f, "#000 red value is 0");

  126.         DISTRHO_ASSERT_EQUAL(c000.green, 0.0f, "#000 green value is 0");

  127.         DISTRHO_ASSERT_EQUAL(c000.blue, 0.0f, "#000 blue value is 0");

  128.         DISTRHO_ASSERT_EQUAL(c000.alpha, 1.0f, "#000 alpha value is 1");

  129. 

  130.         Color c000000 = Color::fromHTML("#000000");

  131.         DISTRHO_ASSERT_EQUAL(c000000.red, 0.0f, "#000000 red value is 0");

  132.         DISTRHO_ASSERT_EQUAL(c000000.green, 0.0f, "#000000 green value is 0");

  133.         DISTRHO_ASSERT_EQUAL(c000000.blue, 0.0f, "#000000 blue value is 0");

  134.         DISTRHO_ASSERT_EQUAL(c000000.alpha, 1.0f, "#000000 alpha value is 1");

  135. 

  136.         Color cfff = Color::fromHTML("#fff");

  137.         DISTRHO_ASSERT_EQUAL(cfff.red, 1.0f, "#fff red value is 1");

  138.         DISTRHO_ASSERT_EQUAL(cfff.green, 1.0f, "#fff green value is 1");

  139.         DISTRHO_ASSERT_EQUAL(cfff.blue, 1.0f, "#fff blue value is 1");

  140.         DISTRHO_ASSERT_EQUAL(cfff.alpha, 1.0f, "#fff alpha value is 1");

  141. 

  142.         Color cffffff = Color::fromHTML("#ffffff");

  143.         DISTRHO_ASSERT_EQUAL(cffffff.red, 1.0f, "#ffffff red value is 1");

  144.         DISTRHO_ASSERT_EQUAL(cffffff.green, 1.0f, "#ffffff green value is 1");

  145.         DISTRHO_ASSERT_EQUAL(cffffff.blue, 1.0f, "#ffffff blue value is 1");

  146.         DISTRHO_ASSERT_EQUAL(cffffff.alpha, 1.0f, "#ffffff alpha value is 1");

  147. 

  148.         Color cf00 = Color::fromHTML("#f00");

  149.         DISTRHO_ASSERT_EQUAL(cf00.red, 1.0f, "#f00 red value is 1");

  150.         DISTRHO_ASSERT_EQUAL(cf00.green, 0.0f, "#f00 green value is 0");

  151.         DISTRHO_ASSERT_EQUAL(cf00.blue, 0.0f, "#f00 blue value is 0");

  152. 

  153.         Color cff0000 = Color::fromHTML("#ff0000");

  154.         DISTRHO_ASSERT_EQUAL(cff0000.red, 1.0f, "#ff0000 red value is 1");

  155.         DISTRHO_ASSERT_EQUAL(cff0000.green, 0.0f, "#ff0000 green value is 0");

  156.         DISTRHO_ASSERT_EQUAL(cff0000.blue, 0.0f, "#ff0000 blue value is 0");

  157. 

  158.         Color c0f0 = Color::fromHTML("#0f0");

  159.         DISTRHO_ASSERT_EQUAL(c0f0.red, 0.0f, "#0f0 red value is 0");

  160.         DISTRHO_ASSERT_EQUAL(c0f0.green, 1.0f, "#0f0 green value is 1");

  161.         DISTRHO_ASSERT_EQUAL(c0f0.blue, 0.0f, "#0f0 blue value is 0");

  162. 

  163.         Color c00ff00 = Color::fromHTML("#00ff00");

  164.         DISTRHO_ASSERT_EQUAL(c00ff00.red, 0.0f, "#00ff00 red value is 0");

  165.         DISTRHO_ASSERT_EQUAL(c00ff00.green, 1.0f, "#00ff00 green value is 1");

  166.         DISTRHO_ASSERT_EQUAL(c00ff00.blue, 0.0f, "#00ff00 blue value is 0");

  167. 

  168.         Color c00f = Color::fromHTML("#00f");

  169.         DISTRHO_ASSERT_EQUAL(c00f.red, 0.0f, "#00f red value is 0");

  170.         DISTRHO_ASSERT_EQUAL(c00f.green, 0.0f, "#00f green value is 0");

  171.         DISTRHO_ASSERT_EQUAL(c00f.blue, 1.0f, "#00f blue value is 1");

  172. 

  173.         Color c0000ff = Color::fromHTML("#0000ff");

  174.         DISTRHO_ASSERT_EQUAL(c0000ff.red, 0.0f, "#0000ff red value is 0");

  175.         DISTRHO_ASSERT_EQUAL(c0000ff.green, 0.0f, "#0000ff green value is 0");

  176.         DISTRHO_ASSERT_EQUAL(c0000ff.blue, 1.0f, "#0000ff blue value is 1");

  177. 

  178.         // half point, round to 1 decimal point due to precision loss

  179.         Color grey = Color::fromHTML("#7b7b7b");

  180.         DISTRHO_ASSERT_SAFE_EQUAL(std::round(grey.red*10)/10, 0.5f, "grey's rounded red value is 0.5");

  181.         DISTRHO_ASSERT_SAFE_EQUAL(std::round(grey.green*10)/10, 0.5f, "grey's rounded green value is 0.5");

  182.         DISTRHO_ASSERT_SAFE_EQUAL(std::round(grey.blue*10)/10, 0.5f, "grey's rounded blue value is 0.5");

  183.     }

  184. 

  185.     // check bounds

  186.     {

  187.         Color negativeInteger(-1, -1, -1, -1.0f);

  188.         DISTRHO_ASSERT_EQUAL(negativeInteger.red, 0.0f, "red value is 0");

  189.         DISTRHO_ASSERT_EQUAL(negativeInteger.green, 0.0f, "green value is 0");

  190.         DISTRHO_ASSERT_EQUAL(negativeInteger.blue, 0.0f, "blue value is 0");

  191.         DISTRHO_ASSERT_EQUAL(negativeInteger.alpha, 0.0f, "alpha value is 0");

  192. 

  193.         Color negativeFloat(-1.0f, -1.0f, -1.0f, -1.0f);

  194.         DISTRHO_ASSERT_EQUAL(negativeFloat.red, 0.0f, "red value is 0");

  195.         DISTRHO_ASSERT_EQUAL(negativeFloat.green, 0.0f, "green value is 0");

  196.         DISTRHO_ASSERT_EQUAL(negativeFloat.blue, 0.0f, "blue value is 0");

  197.         DISTRHO_ASSERT_EQUAL(negativeFloat.alpha, 0.0f, "alpha value is 0");

  198. 

  199.         Color overflowInteger(0xfff, 0xfff, 0xfff, 0xfff);

  200.         DISTRHO_ASSERT_EQUAL(overflowInteger.red, 1.0f, "red value is 1");

  201.         DISTRHO_ASSERT_EQUAL(overflowInteger.green, 1.0f, "green value is 1");

  202.         DISTRHO_ASSERT_EQUAL(overflowInteger.blue, 1.0f, "blue value is 1");

  203.         DISTRHO_ASSERT_EQUAL(overflowInteger.alpha, 1.0f, "alpha value is 1");

  204. 

  205.         Color overflowFloat(2.0f, 2.0f, 2.0f, 2.0f);

  206.         DISTRHO_ASSERT_EQUAL(overflowFloat.red, 1.0f, "red value is 1");

  207.         DISTRHO_ASSERT_EQUAL(overflowFloat.green, 1.0f, "green value is 1");

  208.         DISTRHO_ASSERT_EQUAL(overflowFloat.blue, 1.0f, "blue value is 1");

  209.         DISTRHO_ASSERT_EQUAL(overflowFloat.alpha, 1.0f, "alpha value is 1");

  210.     }

  211. 

  212.     // TODO interpolation

  213.     {

  214.     }

  215. 

  216.     return 0;

  217. }

  218. 

  219. // --------------------------------------------------------------------------------------------------------------------