27 lines
899 B
C
27 lines
899 B
C
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#define HANDMADE_MATH_IMPLEMENTATION
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#define HANDMADE_MATH_NO_SSE
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#include "HandmadeMath.h"
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void calc_matrices(void *res, float w, float h, float rx, float ry, float scale){
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hmm_mat4 proj = HMM_Perspective(60.0f, w/h, 0.01f, 10.0f);
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hmm_mat4 view = HMM_LookAt(HMM_Vec3(0.0f, 0.0f, 6.0f), HMM_Vec3(0.0f, 0.0f, 0.0f), HMM_Vec3(0.0f, 1.0f, 0.0f));
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hmm_mat4 view_proj = HMM_MultiplyMat4(proj, view);
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//state.rx += 1.0f; state.ry += 2.0f;
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hmm_mat4 rxm = HMM_Rotate(rx, HMM_Vec3(1.0f, 0.0f, 0.0f));
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hmm_mat4 rym = HMM_Rotate(ry, HMM_Vec3(0.0f, 1.0f, 0.0f));
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hmm_mat4 model = HMM_MultiplyMat4(rxm, rym);
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hmm_mat4 scale_mx = HMM_Scale(HMM_Vec3(scale, scale, scale));
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model = HMM_MultiplyMat4(model, scale_mx);
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hmm_mat4 tmp_res = HMM_MultiplyMat4(view_proj, model);
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// copy the matrix to V
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int i = 0;
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float *p = &tmp_res.Elements[0];
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while(i < 16){
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((float*)(res))[i]= p[i];
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i++;
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}
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}
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