37 lines
1.0 KiB
C++
37 lines
1.0 KiB
C++
#include <iostream>
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#include <string>
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#include "libpng_wrapper.hpp"
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using namespace std;
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//I was required to write a test function as part of the project; here I test libpng.
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void test_png() {
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png test_image("test_png.png", 500, 500);
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uint32_t w = test_image.width();
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uint32_t h = test_image.height();
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uint32_t square_w = w / 2;
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uint32_t square_h = h / 2;
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uint32_t square_x = square_w;
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uint32_t square_y = square_h;
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for(uint32_t y = 0; y < h; y++) {
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for(uint32_t x = 0; x < w; x++) {
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if((x < (w / 2)) && (y < (h / 2))) {
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test_image.set_pixel(x, y, 255, 0, 0);
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}
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else if((x > (w / 2)) && (y < (h / 2))) {
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test_image.set_pixel(x, y, 0, 255, 0);
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}
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else if((x < (w / 2)) && (y > (h / 2))) {
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test_image.set_pixel(x, y, 0, 0, 255);
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}
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else if((x > (w / 2)) && (y > (h / 2))) {
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test_image.set_pixel(x, y,
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(255 / square_w) * (x - square_x),
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(255 / square_h) * (y - square_y),
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(255 / square_w) * (square_x - x));
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}
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}
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}
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}
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