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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, frustum) {
mat4 proj;
vec4 vp = {0.0f, 0.0f, 800.0f, 600.0f};
float left, right, top, bottom, znear, zfar;
znear = 0.1f;
zfar = 100.0f;
left = -100.0f;
right = 100.0f;
bottom = -100.0f;
top = 100.0f;
GLM(frustum)(left, right, bottom, top, znear, zfar, proj);
ASSERT(test_eq(proj[0][1], 0.0f))
ASSERT(test_eq(proj[0][2], 0.0f))
ASSERT(test_eq(proj[0][3], 0.0f))
ASSERT(test_eq(proj[1][0], 0.0f))
ASSERT(test_eq(proj[1][2], 0.0f))
ASSERT(test_eq(proj[1][3], 0.0f))
ASSERT(test_eq(proj[2][3], -1.0f))
ASSERT(test_eq(proj[3][0], 0.0f))
ASSERT(test_eq(proj[3][1], 0.0f))
ASSERT(test_eq(proj[3][3], 0.0f))
vec4 v1 = {1.0f, 20.0f, znear};
vec4 v2 = {1.0f, 20.0f, zfar};
vec4 v3, v4;
/* perspective test */
GLM(mat4_mulv)(proj, v1, v3);
GLM(project)(v3, proj, vp, v3);
ASSERT(v3[0] > v1[0])
ASSERT(v3[1] > v1[1])
GLM(mat4_mulv)(proj, v2, v4);
GLM(project)(v4, proj, vp, v4);
ASSERT(v4[0] < v3[0])
ASSERT(v4[1] < v3[1])
/* not infinity */
ASSERT(!GLM(vec4_isinf)(proj[0]))
ASSERT(!GLM(vec4_isinf)(proj[1]))
ASSERT(!GLM(vec4_isinf)(proj[2]))
ASSERT(!GLM(vec4_isinf)(proj[3]))
/* not NaN */
ASSERT(!GLM(vec4_isnan)(proj[0]))
ASSERT(!GLM(vec4_isnan)(proj[1]))
ASSERT(!GLM(vec4_isnan)(proj[2]))
ASSERT(!GLM(vec4_isnan)(proj[3]))
TEST_SUCCESS
}
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