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32 lines
983 B
C
32 lines
983 B
C
/*
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* Copyright (c), Recep Aslantas.
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*
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* MIT License (MIT), http://opensource.org/licenses/MIT
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* Full license can be found in the LICENSE file
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*/
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#include "test_common.h"
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void
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test_project(void **state) {
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mat4 model, view, proj, mvp;
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vec4 viewport = {0.0f, 0.0f, 800.0f, 600.0f};
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vec3 pos = {13.0f, 45.0f, 0.74f};
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vec3 projected, unprojected;
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glm_translate_make(model, (vec3){0.0f, 0.0f, -10.0f});
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glm_lookat((vec3){0.0f, 0.0f, 0.0f}, pos, GLM_YUP, view);
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glm_perspective_default(0.5f, proj);
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glm_mat4_mulN((mat4 *[]){&proj, &view, &model}, 3, mvp);
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glmc_project(pos, mvp, viewport, projected);
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glmc_unproject(projected, mvp, viewport, unprojected);
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/* unprojected of projected vector must be same as original one */
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/* we used 0.01 because of projection floating point errors */
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assert_true(fabsf(pos[0] - unprojected[0]) < 0.01);
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assert_true(fabsf(pos[1] - unprojected[1]) < 0.01);
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assert_true(fabsf(pos[2] - unprojected[2]) < 0.01);
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}
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