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1 #include <stdio.h>
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2 #include <assert.h>
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3 #include <assimp/material.h>
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4 #include "opengl.h"
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5 #include "material.h"
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6
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7 Material::Material()
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8 : kd(1.0, 1.0, 1.0), ks(0.0, 0.0, 0.0)
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9 {
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10 shin = 1.0;
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11 memset(tex, 0, sizeof tex);
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12 }
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13
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14 void Material::load(const aiMaterial *assmat, TextureSet *texset)
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15 {
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16 aiColor4D col;
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17 float val;
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18
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19 aiGetMaterialColor(assmat, AI_MATKEY_COLOR_DIFFUSE, &col);
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20 kd = Color(col[0], col[1], col[2]);
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21 aiGetMaterialColor(assmat, AI_MATKEY_COLOR_SPECULAR, &col);
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22 ks = Color(col[0], col[1], col[2]);
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23
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24 unsigned int sz = 1;
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25 val = 60.0;
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26 aiGetMaterialFloatArray(assmat, AI_MATKEY_SHININESS, &val, &sz);
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27 if(val > 127) {
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28 fprintf(stderr, "Warning: shininess %f... setting to 127\n", val);
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29 val = 127;
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30 }
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31 shin = val;
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32
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33 sz = 1;
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34 val = 1.0;
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35 aiGetMaterialFloatArray(assmat, AI_MATKEY_SHININESS_STRENGTH, &val, &sz);
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36 ks *= val;
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37
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38 // must match TEXTYPE enum in material.h
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39 unsigned int asstypes[] = {
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40 aiTextureType_DIFFUSE,
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41 aiTextureType_NORMALS,
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42 aiTextureType_SPECULAR
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43 };
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44
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45 for(int i=0; i<NUM_TEXTURE_TYPES; i++) {
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46 aiString tex_name;
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47 if(aiGetMaterialString(assmat, AI_MATKEY_TEXTURE(asstypes[i], 0), &tex_name) == 0) {
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48 tex[i] = texset->get_texture(tex_name.data);
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49 } else {
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50 tex[i] = 0;
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51 }
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52 }
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53 }
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54
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55 void Material::setup() const
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56 {
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57 float dcol[] = {kd.x, kd.y, kd.z, 1.0};
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58 float scol[] = {ks.x, ks.y, ks.z, 1.0};
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59
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60 glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, dcol);
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61 glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, scol);
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62 glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, shin);
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63
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64 if(tex[TEXTYPE_DIFFUSE]) {
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65 glActiveTextureARB(GL_TEXTURE0);
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66 glBindTexture(GL_TEXTURE_2D, tex[TEXTYPE_DIFFUSE]);
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67 glEnable(GL_TEXTURE_2D);
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68 } else {
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69 glDisable(GL_TEXTURE_2D);
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70 }
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71 glActiveTextureARB(GL_TEXTURE0);
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72 }
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