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57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
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/*
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* Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
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* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@gmx.de>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "GL/gl.h"
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#include "GLContext.h"
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extern GL::GLContext* g_gl_context;
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void glMatrixMode(GLenum mode)
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{
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g_gl_context->gl_matrix_mode(mode);
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}
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/*
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* Push the current matrix (based on the current matrix mode)
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* to its' corresponding matrix stack in the current OpenGL
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* state context
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*/
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void glPushMatrix()
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{
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g_gl_context->gl_push_matrix();
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}
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/*
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* Pop a matrix from the corresponding matrix stack into the
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* corresponding matrix in the state based on the current
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* matrix mode
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*/
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void glPopMatrix()
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{
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g_gl_context->gl_pop_matrix();
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}
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void glLoadIdentity()
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{
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g_gl_context->gl_load_identity();
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}
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/**
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* Create a viewing frustum (a.k.a a "Perspective Matrix") in the current matrix. This
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* is usually done to the projection matrix. The current matrix is then multiplied
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* by this viewing frustum matrix.
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*
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* https://www.khronos.org/registry/OpenGL-Refpages/gl2.1/xhtml/glFrustum.xml
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*
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*
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* FIXME: We need to check for some values that could result in a division by zero
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*/
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void glFrustum(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble nearVal, GLdouble farVal)
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{
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g_gl_context->gl_frustum(left, right, bottom, top, nearVal, farVal);
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}
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