259 lines
6.7 KiB
C
259 lines
6.7 KiB
C
#include "blocks.h"
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#include "state.h"
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float tc_cube_front_uv[12] =
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{
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0.0f, 0.0f,
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0.0f, 1.0f,
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1.0f, 0.0f,
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1.0f, 1.0f,
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1.0f, 0.0f,
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0.0f, 1.0f
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};
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float tc_cube_front_xyz[18] =
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{
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-0.5f, -0.5f, -0.5f,
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-0.5f, 0.5f, -0.5f,
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0.5f, -0.5f, -0.5f,
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0.5f, 0.5f, -0.5f,
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0.5f, -0.5f, -0.5f,
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-0.5f, 0.5f, -0.5f
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};
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float tc_cube_back_uv[12] =
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{
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1.0f, 0.0f,
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0.0f, 1.0f,
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0.0f, 0.0f,
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0.0f, 1.0f,
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1.0f, 0.0f,
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1.0f, 1.0f
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};
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float tc_cube_back_xyz[18] =
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{
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0.5f, -0.5f, 0.5f,
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-0.5f, 0.5f, 0.5f,
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-0.5f, -0.5f, 0.5f,
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-0.5f, 0.5f, 0.5f,
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0.5f, -0.5f, 0.5f,
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0.5f, 0.5f, 0.5f
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};
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float tc_cube_west_uv[12] =
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{
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0.0f, 1.0f,
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0.0f, 0.0f,
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1.0f, 0.0f,
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1.0f, 0.0f,
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1.0f, 1.0f,
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0.0f, 1.0f
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};
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float tc_cube_west_xyz[18] =
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{
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-0.5f, 0.5f, -0.5f,
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-0.5f, -0.5f, -0.5f,
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-0.5f, -0.5f, 0.5f,
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-0.5f, -0.5f, 0.5f,
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-0.5f, 0.5f, 0.5f,
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-0.5f, 0.5f, -0.5f
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};
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float tc_cube_east_uv[12] =
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{
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1.0f, 0.0f,
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0.0f, 0.0f,
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0.0f, 1.0f,
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0.0f, 1.0f,
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1.0f, 1.0f,
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1.0f, 0.0f
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};
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float tc_cube_east_xyz[18] =
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{
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0.5f, -0.5f, 0.5f,
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0.5f, -0.5f, -0.5f,
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0.5f, 0.5f, -0.5f,
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0.5f, 0.5f, -0.5f,
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0.5f, 0.5f, 0.5f,
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0.5f, -0.5f, 0.5f
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};
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float tc_cube_top_uv[12] =
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{
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0.0f, 0.0f,
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0.0f, 1.0f,
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1.0f, 0.0f,
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0.0f, 1.0f,
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1.0f, 1.0f,
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1.0f, 0.0f
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};
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float tc_cube_top_xyz[18] =
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{
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-0.5f, 0.5f, -0.5f,
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-0.5f, 0.5f, 0.5f,
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0.5f, 0.5f, -0.5f,
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-0.5f, 0.5f, 0.5f,
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0.5f, 0.5f, 0.5f,
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0.5f, 0.5f, -0.5f
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};
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float tc_cube_bottom_uv[12] =
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{
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0.0f, 1.0f,
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0.0f, 0.0f,
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1.0f, 0.0f,
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1.0f, 1.0f,
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0.0f, 1.0f,
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1.0f, 0.0f
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};
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float tc_cube_bottom_xyz[18] =
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{
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-0.5f, -0.5f, 0.5f,
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-0.5f, -0.5f, -0.5f,
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0.5f, -0.5f, -0.5f,
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0.5f, -0.5f, 0.5f,
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-0.5f, -0.5f, 0.5f,
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0.5f, -0.5f, -0.5f
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};
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void tc_adjust_cube_uvs_for_image(tc_image_s *image, float *face_uvs)
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{
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float uv_per_pixel_w = 1.0f / image->width;
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float uv_per_pixel_h = 1.0f / image->height;
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if(image->superimage != NULL)
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{
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uv_per_pixel_w = 1.0f / image->superimage->width;
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uv_per_pixel_h = 1.0f / image->superimage->height;
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}
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float lower_x = uv_per_pixel_w * ((float) image->x);
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float lower_y = uv_per_pixel_h * ((float) image->y);
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float higher_x = 1.0f;
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float higher_y = 1.0f;
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higher_x = lower_x + uv_per_pixel_w * 8; // image->width;
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higher_y = lower_y + uv_per_pixel_h * 8; // image->height;
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uint32_t num_floats = 2 * 6;
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uint32_t index = 0;
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while(index < num_floats)
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{
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if(face_uvs[index] == 1.0f)
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{
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face_uvs[index] = higher_x;
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}
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else
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{
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face_uvs[index] = lower_x;
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}
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++index;
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if(face_uvs[index] == 1.0f)
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{
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face_uvs[index] = higher_y;
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}
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else
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{
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face_uvs[index] = lower_y;
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}
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++index;
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}
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}
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tc_cube_side_mesh_s * tc_premesh_cube_block_side(
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tc_image_s *image, float *xyz, float *uv, uint32_t num_vertices
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) {
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tc_cube_side_mesh_s *side = malloc(sizeof(tc_cube_side_mesh_s));
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side->num_vertices = num_vertices;
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side->allocation = malloc(sizeof(float) * num_vertices * (2+3));
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side->xyz = side->allocation;
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memcpy(side->xyz, xyz, sizeof(float) * num_vertices * 3);
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side->uv = &side->allocation[num_vertices*3];
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memcpy(side->uv, uv, sizeof(float) * num_vertices * 2);
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tc_adjust_cube_uvs_for_image(image, side->uv);
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return side;
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}
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void tc_premesh_cube(tc_block_entry_s *entry)
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{
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tc_image_s *front_texture = tc_block_resolve_name_to_attribute(entry, "front_texture")->value.pointer;
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tc_image_s *back_texture = tc_block_resolve_name_to_attribute(entry, "back_texture")->value.pointer;
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tc_image_s *west_texture = tc_block_resolve_name_to_attribute(entry, "west_texture")->value.pointer;
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tc_image_s *east_texture = tc_block_resolve_name_to_attribute(entry, "east_texture")->value.pointer;
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tc_image_s *top_texture = tc_block_resolve_name_to_attribute(entry, "top_texture")->value.pointer;
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tc_image_s *bottom_texture = tc_block_resolve_name_to_attribute(entry, "bottom_texture")->value.pointer;
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tc_cube_side_mesh_s *front = tc_premesh_cube_block_side(front_texture, tc_cube_front_xyz, tc_cube_front_uv, 6);
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tc_cube_side_mesh_s *back = tc_premesh_cube_block_side(back_texture, tc_cube_back_xyz, tc_cube_back_uv, 6);
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tc_cube_side_mesh_s *west = tc_premesh_cube_block_side(west_texture, tc_cube_west_xyz, tc_cube_west_uv, 6);
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tc_cube_side_mesh_s *east = tc_premesh_cube_block_side(east_texture, tc_cube_east_xyz, tc_cube_east_uv, 6);
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tc_cube_side_mesh_s *top = tc_premesh_cube_block_side(top_texture, tc_cube_top_xyz, tc_cube_top_uv, 6);
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tc_cube_side_mesh_s *bottom = tc_premesh_cube_block_side(bottom_texture, tc_cube_bottom_xyz, tc_cube_bottom_uv, 6);
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tc_block_attribute_s front_attribute;
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front_attribute.name = "south_mesh";
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front_attribute.value.pointer = front;
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tc_block_attribute_s back_attribute;
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back_attribute.name = "north_mesh";
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back_attribute.value.pointer = back;
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tc_block_attribute_s west_attribute;
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west_attribute.name = "west_mesh";
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west_attribute.value.pointer = west;
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tc_block_attribute_s east_attribute;
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east_attribute.name = "east_mesh";
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east_attribute.value.pointer = east;
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tc_block_attribute_s top_attribute;
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top_attribute.name = "top_mesh";
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top_attribute.value.pointer = top;
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tc_block_attribute_s bottom_attribute;
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bottom_attribute.name = "bottom_mesh";
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bottom_attribute.value.pointer = bottom;
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tc_add_attribute_to_block_entry(entry, front_attribute);
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tc_add_attribute_to_block_entry(entry, back_attribute);
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tc_add_attribute_to_block_entry(entry, east_attribute);
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tc_add_attribute_to_block_entry(entry, west_attribute);
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tc_add_attribute_to_block_entry(entry, top_attribute);
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tc_add_attribute_to_block_entry(entry, bottom_attribute);
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}
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