private void drawReflectedShadow(IShadowingGraphicComponent component, float[] drawingTranslation, float[] drawingRotation, float[] lightPosition)
{
GL.glDisable(GL.GL_LIGHTING);
GL.glPushMatrix();
GL.glScalef(1, 1, -1);
beginStencil(eStencils.ReflectedFloor);
float[] matrix = getShadowMatrix(eShadowMatrices.Floor, lightPosition);
GL.glTranslatef(0, 0.01f, 0);
GL.glMultMatrixf(matrix);
GL.glTranslatef(drawingTranslation[0], drawingTranslation[1], drawingTranslation[2]);
GL.glRotatef(drawingRotation[0], 1, 0, 0);
GL.glRotatef(drawingRotation[1], 0, 1, 0);
GL.glRotatef(drawingRotation[2], 0, 0, 1);
GL.glColor3f(0.15f, 0.15f, 0.15f);
component.DrawShadow();
stopStencil();
GL.glPopMatrix();
GL.glEnable(GL.GL_LIGHTING);
}
private void multiplyMatrixAndDrawComponentShadow(float[] matrix, IShadowingGraphicComponent component, float[] drawingTranslation, float[] drawingRotation)
{
GL.glPushMatrix();
GL.glMultMatrixf(matrix);
GL.glTranslatef(drawingTranslation[0], drawingTranslation[1], drawingTranslation[2]);
GL.glRotatef(drawingRotation[0], 1, 0, 0);
GL.glRotatef(drawingRotation[1], 0, 1, 0);
GL.glRotatef(drawingRotation[2], 0, 0, 1);
component.DrawShadow();
GL.glPopMatrix();
}
public void DrawComponentShadows(float[] lightPosition, IShadowingGraphicComponent component, float[] drawingTranslation, float[] drawingRotation)
{
GL.glDisable(GL.GL_LIGHTING);
GL.glColor3f(0.15f, 0.15f, 0.15f);
// floor shadow
beginStencil(eStencils.Floor);
float[] matrix = getShadowMatrix(eShadowMatrices.Floor, lightPosition);
GL.glPushMatrix();
GL.glTranslatef(0, 0.01f, 0);
multiplyMatrixAndDrawComponentShadow(matrix, component, drawingTranslation, drawingRotation);
multiplyMatrixAndDrawComponentShadow(matrix, this, new float[] { 0, 0, 0 }, new float[] { 0, 0, 0 }); // drawing skyscraper shadow on the floor
GL.glPopMatrix();
// roof shadow
beginStencil(eStencils.Roof);
matrix = getShadowMatrix(eShadowMatrices.Roof, lightPosition);
GL.glPushMatrix();
GL.glTranslatef(0, 0.01f, 0);
multiplyMatrixAndDrawComponentShadow(matrix, component, drawingTranslation, drawingRotation);
GL.glPopMatrix();
GL.glColor3f(0.20f, 0.20f, 0.20f);
// upper back wall shadow
beginStencil(eStencils.UpperBackWall);
matrix = getShadowMatrix(eShadowMatrices.UpperBackWall, lightPosition);
GL.glPushMatrix();
GL.glTranslatef(0, 0, -0.01f);
multiplyMatrixAndDrawComponentShadow(matrix, component, drawingTranslation, drawingRotation);
GL.glPopMatrix();
// upper left wall shadow
beginStencil(eStencils.UpperLeftWall);
matrix = getShadowMatrix(eShadowMatrices.UpperLeftWall, lightPosition);
GL.glPushMatrix();
GL.glTranslatef(-0.01f, 0, 0);
multiplyMatrixAndDrawComponentShadow(matrix, component, drawingTranslation, drawingRotation);
GL.glPopMatrix();
// upper right wall shadow
beginStencil(eStencils.UpperRightWall);
matrix = getShadowMatrix(eShadowMatrices.UpperRightWall, lightPosition);
GL.glPushMatrix();
GL.glTranslatef(0.01f, 0, 0);
multiplyMatrixAndDrawComponentShadow(matrix, component, drawingTranslation, drawingRotation);
GL.glPopMatrix();
// bottom front wall shadow
beginStencil(eStencils.BottomFrontWall);
matrix = getShadowMatrix(eShadowMatrices.BottomFrontWall, lightPosition);
GL.glPushMatrix();
GL.glTranslatef(0, 0, 0.01f);
multiplyMatrixAndDrawComponentShadow(matrix, component, drawingTranslation, drawingRotation);
GL.glPopMatrix();
// bottom back wall shadow
beginStencil(eStencils.BottomBackWall);
matrix = getShadowMatrix(eShadowMatrices.BottomBackWall, lightPosition);
GL.glPushMatrix();
GL.glTranslatef(0, 0, -0.01f);
multiplyMatrixAndDrawComponentShadow(matrix, component, drawingTranslation, drawingRotation);
GL.glPopMatrix();
// bottom left wall shadow
beginStencil(eStencils.BottomLeftWall);
matrix = getShadowMatrix(eShadowMatrices.BottomLeftWall, lightPosition);
GL.glPushMatrix();
GL.glTranslatef(-0.01f, 0, 0);
multiplyMatrixAndDrawComponentShadow(matrix, component, drawingTranslation, drawingRotation);
GL.glPopMatrix();
// bottom right wall shadow
beginStencil(eStencils.BottomRightWall);
matrix = getShadowMatrix(eShadowMatrices.BottomRightWall, lightPosition);
GL.glPushMatrix();
GL.glTranslatef(0.01f, 0, 0);
multiplyMatrixAndDrawComponentShadow(matrix, component, drawingTranslation, drawingRotation);
GL.glPopMatrix();
// disable stencil
stopStencil();
GL.glEnable(GL.GL_LIGHTING);
}
