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tests: add some test for project/unproject

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Recep Aslantas
2019-09-22 10:52:02 +03:00
parent d0671b3e7a
commit d7b37ba245
3 changed files with 120 additions and 22 deletions
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test/src/test_project.h Normal file
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/*
* Copyright (c), Recep Aslantas.
*
* MIT License (MIT), http://opensource.org/licenses/MIT
* Full license can be found in the LICENSE file
*/
#include "test_common.h"
TEST_IMPL(GLM_PREFIX, unprojecti) {
mat4 model, view, proj, mvp;
vec4 viewport = {0.0f, 0.0f, 800.0f, 600.0f};
vec3 pos = {13.0f, 45.0f, 0.74f};
vec3 projected, unprojected;
glm_translate_make(model, (vec3){0.0f, 0.0f, -10.0f});
glm_lookat((vec3){0.0f, 0.0f, 0.0f}, pos, GLM_YUP, view);
glm_perspective_default(0.5f, proj);
glm_mat4_mulN((mat4 *[]){&proj, &view, &model}, 3, mvp);
GLM(project)(pos, mvp, viewport, projected);
glm_mat4_inv(mvp, mvp);
GLM(unprojecti)(projected, mvp, viewport, unprojected);
/* unprojected of projected vector must be same as original one */
/* we used 0.01 because of projection floating point errors */
ASSERT(fabsf(pos[0] - unprojected[0]) < 0.01)
ASSERT(fabsf(pos[1] - unprojected[1]) < 0.01)
ASSERT(fabsf(pos[2] - unprojected[2]) < 0.01)
TEST_SUCCESS
}
TEST_IMPL(GLM_PREFIX, unproject) {
mat4 model, view, proj, mvp;
vec4 viewport = {0.0f, 0.0f, 800.0f, 600.0f};
vec3 pos = {13.0f, 45.0f, 0.74f};
vec3 projected, unprojected;
glm_translate_make(model, (vec3){0.0f, 0.0f, -10.0f});
glm_lookat((vec3){0.0f, 0.0f, 0.0f}, pos, GLM_YUP, view);
glm_perspective_default(0.5f, proj);
glm_mat4_mulN((mat4 *[]){&proj, &view, &model}, 3, mvp);
GLM(project)(pos, mvp, viewport, projected);
GLM(unproject)(projected, mvp, viewport, unprojected);
/* unprojected of projected vector must be same as original one */
/* we used 0.01 because of projection floating point errors */
ASSERT(fabsf(pos[0] - unprojected[0]) < 0.01)
ASSERT(fabsf(pos[1] - unprojected[1]) < 0.01)
ASSERT(fabsf(pos[2] - unprojected[2]) < 0.01)
TEST_SUCCESS
}
TEST_IMPL(GLM_PREFIX, project) {
mat4 model, view, proj, mvp;
vec4 viewport = {0.0f, 0.0f, 800.0f, 600.0f};
vec3 pos = {13.0f, 45.0f, 0.74f};
vec3 projected, unprojected;
glm_translate_make(model, (vec3){0.0f, 0.0f, -10.0f});
glm_lookat((vec3){0.0f, 0.0f, 0.0f}, pos, GLM_YUP, view);
glm_perspective_default(0.5f, proj);
glm_mat4_mulN((mat4 *[]){&proj, &view, &model}, 3, mvp);
GLM(project)(pos, mvp, viewport, projected);
GLM(unproject)(projected, mvp, viewport, unprojected);
/* unprojected of projected vector must be same as original one */
/* we used 0.01 because of projection floating point errors */
ASSERT(fabsf(pos[0] - unprojected[0]) < 0.01)
ASSERT(fabsf(pos[1] - unprojected[1]) < 0.01)
ASSERT(fabsf(pos[2] - unprojected[2]) < 0.01)
/* test with no projection */
glm_mat4_identity(mvp);
GLM(project)(pos, mvp, viewport, projected);
GLM(unproject)(projected, mvp, viewport, unprojected);
ASSERT(glm_eq(pos[0], unprojected[0]))
ASSERT(glm_eq(pos[1], unprojected[1]))
ASSERT(glm_eq(pos[2], unprojected[2]))
TEST_SUCCESS
}