105 lines
3 KiB
C++
105 lines
3 KiB
C++
/*
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* Triangle.h
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*
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* Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ZOOM_TRIANGLE_H_
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#define ZOOM_TRIANGLE_H_
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#include <vmmlib/vector.hpp>
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#include <vmmlib/matrix.hpp>
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namespace Zoom {
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class Triangle {
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public:
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Triangle() : color(vmml::vec4f::ONE), texture(0) {
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vertices[0] = vertices[1] = vertices[2] = vmml::vec3f::ZERO;
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normals[0] = normals[1] = normals[2] = vmml::vec3f::ZERO;
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texcoords[0] = texcoords[1] = texcoords[2] = vmml::vec2f::ZERO;
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}
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Triangle(const vmml::vec3f &v1, const vmml::vec3f &v2, const vmml::vec3f &v3, const vmml::vec4f &color0) : color(color0), texture(0) {
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vertices[0] = v1;
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vertices[1] = v2;
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vertices[2] = v3;
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normals[0] = normals[1] = normals[2] = vmml::vec3f::ZERO;
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texcoords[0] = texcoords[1] = texcoords[2] = vmml::vec2f::ZERO;
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}
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const vmml::vec3f& getVertex(int i) const {return vertices[i];}
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vmml::vec3f& getVertex(int i) {return vertices[i];}
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void setVertex(int i, vmml::vec3f v) {
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vertices[i] = v;
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}
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const vmml::vec3f& getNormal(int i) const {return normals[i];}
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vmml::vec3f& getNormal(int i) {return normals[i];}
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void setNormal(int i, vmml::vec3f n) {
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normals[i] = n;
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}
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const vmml::vec2f& getTexCoords(int i) const {return texcoords[i];}
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vmml::vec2f& getTexCoords(int i) {return texcoords[i];}
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void setTexCoords(int i, vmml::vec2f t) {
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texcoords[i] = t;
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}
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unsigned getTexture() const {
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return texture;
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}
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void setTexture(unsigned tex) {
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texture = tex;
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}
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const vmml::vec4f& getColor() const {return color;}
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vmml::vec4f& getColor() {return color;}
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void setColor(vmml::vec4f c) {
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color = c;
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}
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vmml::vec3f computeNormal() const {
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return vertices[0].compute_normal(vertices[1], vertices[2]);
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}
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bool isDegenerate() const {
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return (computeNormal().squared_length() == 0);
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}
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void transform(const vmml::mat4f &matrix) {
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for(int i = 0; i < 3; ++i) {
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vertices[i] = matrix*vertices[i];
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}
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}
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vmml::vec3f getCenter() const {
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return (vertices[0]+vertices[1]+vertices[2])/3;
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}
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private:
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vmml::vec3f vertices[3];
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vmml::vec3f normals[3];
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vmml::vec2f texcoords[3];
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vmml::vec4f color;
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unsigned texture;
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};
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}
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#endif /*ZOOM_TRIANGLE_H_*/
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