59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
#include "precompile.h"
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#include <math.h>
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#include <glm/glm.hpp>
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#include <glm/gtc/matrix_transform.hpp>
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#include "glmhelper.h"
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const glm::vec3 GlmHelper::ZERO = glm::vec3(0.0f, 0.0f, 0.0f);
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const glm::vec3 GlmHelper::RIGHT = glm::vec3(1.0f, 0.0f, 0.0f);
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const glm::vec3 GlmHelper::UP = glm::vec3(0.0f, 0.0f, 1.0f);
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const glm::vec3 GlmHelper::DONW = glm::vec3(0.0f, 0.0f, 1.0f);
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void GlmHelper::RotateY(glm::vec3& v, float angle)
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{
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auto transform =
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glm::rotate(
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glm::mat4(1.0),
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angle,
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//glm::radians(angle),
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glm::vec3(0.0f, 1.0f, 0.0f)
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);
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glm::vec4 v1 = transform * glm::vec4(v.x, v.y, v.z, 0.0f);
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v.x = v1.x;
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v.y = v1.y;
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v.z = v1.z;
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}
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void GlmHelper::Normalize(glm::vec3& v)
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{
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v = glm::normalize(v);
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if (isnan(v.x)) {
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abort();
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}
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if (isnan(v.y)) {
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abort();
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}
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if (isnan(v.z)) {
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abort();
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}
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}
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float GlmHelper::Norm(const glm::vec3& v)
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{
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return glm::length(v);
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}
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bool GlmHelper::IsZero(const glm::vec3& v)
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{
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return fabs(v.x) < 0.00001f && fabs(v.y) < 0.00001f && fabs(v.z) < 0.00001f;
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}
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float GlmHelper::CalcAngle(const glm::vec3& v1, const glm::vec3& v2)
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{
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float angle = acos(glm::dot(v1, v2) / Norm(v1) / Norm(v2));
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return angle / 3.1415926f;
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}
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