62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
#include "Triangle.h"
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triangle_collection_t triangle_collection_create(size_t size)
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{
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if (size > UINT64_MAX)
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{
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size = UINT64_MAX;
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}
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triangle_collection_t collection = {0};
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collection.buffer = (triangle_t*)malloc(size * sizeof(triangle_t));
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collection.size = (uint64_t)size;
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return collection;
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}
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void triangle_collection_resize(triangle_collection_t* collection, size_t size)
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{
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if (size > UINT64_MAX)
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{
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size = UINT64_MAX;
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}
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triangle_t* temp = realloc(collection->buffer, size * sizeof(triangle_t));
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if (temp != NULL)
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{
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collection->buffer = temp;
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collection->size = (uint64_t)size;
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}
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}
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void triangle_collection_free(triangle_collection_t* collection)
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{
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if (collection->buffer != NULL)
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{
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free(collection->buffer);
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collection->buffer = NULL;
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}
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}
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void triangle_create(vec3s point1, vec3s point2, vec3s point3, uint8_t material_id, triangle_collection_t* collection)
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{
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if (collection->count >= collection->size)
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{
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triangle_collection_resize(collection, collection->size * 2);
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}
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triangle_t new_triangle;
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new_triangle.point1 = point1;
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new_triangle.point2 = point2;
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new_triangle.point3 = point3;
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new_triangle.material_id = material_id;
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vec3s edge1 = glms_vec3_sub(point2, point1);
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vec3s edge2 = glms_vec3_sub(point3, point1);
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new_triangle.normal = glms_vec3_normalize(glms_vec3_cross(edge1, edge2));
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collection->buffer[collection->count] = new_triangle;
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collection->count++;
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}
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